diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index 76021db..3173ab8 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -391,1567 +391,1585 @@
 
 static void ShowDemoWindowWidgets()
 {
-    if (ImGui::CollapsingHeader("Widgets"))
+    if (!ImGui::CollapsingHeader("Widgets"))
+        return;
+
+    if (ImGui::TreeNode("Basic"))
     {
-        if (ImGui::TreeNode("Basic"))
+        static int clicked = 0;
+        if (ImGui::Button("Button"))
+            clicked++;
+        if (clicked & 1)
         {
-            static int clicked = 0;
-            if (ImGui::Button("Button"))
-                clicked++;
-            if (clicked & 1)
-            {
+            ImGui::SameLine();
+            ImGui::Text("Thanks for clicking me!");
+        }
+
+        static bool check = true;
+        ImGui::Checkbox("checkbox", &check);
+
+        static int e = 0;
+        ImGui::RadioButton("radio a", &e, 0); ImGui::SameLine();
+        ImGui::RadioButton("radio b", &e, 1); ImGui::SameLine();
+        ImGui::RadioButton("radio c", &e, 2);
+
+        // Color buttons, demonstrate using PushID() to add unique identifier in the ID stack, and changing style.
+        for (int i = 0; i < 7; i++)
+        {
+            if (i > 0) 
                 ImGui::SameLine();
-                ImGui::Text("Thanks for clicking me!");
-            }
+            ImGui::PushID(i);
+            ImGui::PushStyleColor(ImGuiCol_Button, (ImVec4)ImColor::HSV(i/7.0f, 0.6f, 0.6f));
+            ImGui::PushStyleColor(ImGuiCol_ButtonHovered, (ImVec4)ImColor::HSV(i/7.0f, 0.7f, 0.7f));
+            ImGui::PushStyleColor(ImGuiCol_ButtonActive, (ImVec4)ImColor::HSV(i/7.0f, 0.8f, 0.8f));
+            ImGui::Button("Click");
+            ImGui::PopStyleColor(3);
+            ImGui::PopID();
+        }
 
-            static bool check = true;
-            ImGui::Checkbox("checkbox", &check);
+        // Use AlignTextToFramePadding() to align text baseline to the baseline of framed elements (otherwise a Text+SameLine+Button sequence will have the text a little too high by default)
+        ImGui::AlignTextToFramePadding();
+        ImGui::Text("Hold to repeat:");
+        ImGui::SameLine();
 
-            static int e = 0;
-            ImGui::RadioButton("radio a", &e, 0); ImGui::SameLine();
-            ImGui::RadioButton("radio b", &e, 1); ImGui::SameLine();
-            ImGui::RadioButton("radio c", &e, 2);
+        // Arrow buttons with Repeater
+        static int counter = 0;
+        float spacing = ImGui::GetStyle().ItemInnerSpacing.x;
+        ImGui::PushButtonRepeat(true);
+        if (ImGui::ArrowButton("##left", ImGuiDir_Left)) { counter--; }
+        ImGui::SameLine(0.0f, spacing);
+        if (ImGui::ArrowButton("##right", ImGuiDir_Right)) { counter++; }
+        ImGui::PopButtonRepeat();
+        ImGui::SameLine();
+        ImGui::Text("%d", counter);
 
-            // Color buttons, demonstrate using PushID() to add unique identifier in the ID stack, and changing style.
-            for (int i = 0; i < 7; i++)
-            {
-                if (i > 0) 
+        ImGui::Text("Hover over me");
+        if (ImGui::IsItemHovered())
+            ImGui::SetTooltip("I am a tooltip");
+
+        ImGui::SameLine();
+        ImGui::Text("- or me");
+        if (ImGui::IsItemHovered())
+        {
+            ImGui::BeginTooltip();
+            ImGui::Text("I am a fancy tooltip");
+            static float arr[] = { 0.6f, 0.1f, 1.0f, 0.5f, 0.92f, 0.1f, 0.2f };
+            ImGui::PlotLines("Curve", arr, IM_ARRAYSIZE(arr));
+            ImGui::EndTooltip();
+        }
+
+        ImGui::Separator();
+
+        ImGui::LabelText("label", "Value");
+
+        {
+            // Using the _simplified_ one-liner Combo() api here
+            // See "Combo" section for examples of how to use the more complete BeginCombo()/EndCombo() api.
+            const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO" };
+            static int item_current = 0;
+            ImGui::Combo("combo", &item_current, items, IM_ARRAYSIZE(items));
+            ImGui::SameLine(); ShowHelpMarker("Refer to the \"Combo\" section below for an explanation of the full BeginCombo/EndCombo API, and demonstration of various flags.\n");
+        }
+
+        {
+            static char str0[128] = "Hello, world!";
+            static int i0 = 123;
+            ImGui::InputText("input text", str0, IM_ARRAYSIZE(str0));
+            ImGui::SameLine(); ShowHelpMarker("USER:\nHold SHIFT or use mouse to select text.\n" "CTRL+Left/Right to word jump.\n" "CTRL+A or double-click to select all.\n" "CTRL+X,CTRL+C,CTRL+V clipboard.\n" "CTRL+Z,CTRL+Y undo/redo.\n" "ESCAPE to revert.\n\nPROGRAMMER:\nYou can use the ImGuiInputTextFlags_CallbackResize facility if you need to wire InputText() to a dynamic string type. See misc/cpp/imgui_stdlib.h for an example (this is not demonstrated in imgui_demo.cpp).");
+
+            ImGui::InputInt("input int", &i0);
+            ImGui::SameLine(); ShowHelpMarker("You can apply arithmetic operators +,*,/ on numerical values.\n  e.g. [ 100 ], input \'*2\', result becomes [ 200 ]\nUse +- to subtract.\n");
+
+            static float f0 = 0.001f;
+            ImGui::InputFloat("input float", &f0, 0.01f, 1.0f);
+
+            static double d0 = 999999.00000001;
+            ImGui::InputDouble("input double", &d0, 0.01f, 1.0f, "%.8f");
+
+            static float f1 = 1.e10f;
+            ImGui::InputFloat("input scientific", &f1, 0.0f, 0.0f, "%e");
+            ImGui::SameLine(); ShowHelpMarker("You can input value using the scientific notation,\n  e.g. \"1e+8\" becomes \"100000000\".\n");
+
+            static float vec4a[4] = { 0.10f, 0.20f, 0.30f, 0.44f };
+            ImGui::InputFloat3("input float3", vec4a);
+        }
+
+        {
+            static int i1 = 50, i2 = 42;
+            ImGui::DragInt("drag int", &i1, 1);
+            ImGui::SameLine(); ShowHelpMarker("Click and drag to edit value.\nHold SHIFT/ALT for faster/slower edit.\nDouble-click or CTRL+click to input value.");
+
+            ImGui::DragInt("drag int 0..100", &i2, 1, 0, 100, "%d%%");
+
+            static float f1=1.00f, f2=0.0067f;
+            ImGui::DragFloat("drag float", &f1, 0.005f);
+            ImGui::DragFloat("drag small float", &f2, 0.0001f, 0.0f, 0.0f, "%.06f ns");
+        }
+
+        {
+            static int i1=0;
+            ImGui::SliderInt("slider int", &i1, -1, 3);
+            ImGui::SameLine(); ShowHelpMarker("CTRL+click to input value.");
+
+            static float f1=0.123f, f2=0.0f;
+            ImGui::SliderFloat("slider float", &f1, 0.0f, 1.0f, "ratio = %.3f");
+            ImGui::SliderFloat("slider float (curve)", &f2, -10.0f, 10.0f, "%.4f", 2.0f);
+            static float angle = 0.0f;
+            ImGui::SliderAngle("slider angle", &angle);
+        }
+
+        {
+            static float col1[3] = { 1.0f,0.0f,0.2f };
+            static float col2[4] = { 0.4f,0.7f,0.0f,0.5f };
+            ImGui::ColorEdit3("color 1", col1);
+            ImGui::SameLine(); ShowHelpMarker("Click on the colored square to open a color picker.\nClick and hold to use drag and drop.\nRight-click on the colored square to show options.\nCTRL+click on individual component to input value.\n");
+
+            ImGui::ColorEdit4("color 2", col2);
+        }
+
+        {
+            // List box
+            const char* listbox_items[] = { "Apple", "Banana", "Cherry", "Kiwi", "Mango", "Orange", "Pineapple", "Strawberry", "Watermelon" };
+            static int listbox_item_current = 1;
+            ImGui::ListBox("listbox\n(single select)", &listbox_item_current, listbox_items, IM_ARRAYSIZE(listbox_items), 4);
+
+            //static int listbox_item_current2 = 2;
+            //ImGui::PushItemWidth(-1);
+            //ImGui::ListBox("##listbox2", &listbox_item_current2, listbox_items, IM_ARRAYSIZE(listbox_items), 4);
+            //ImGui::PopItemWidth();
+        }
+
+        ImGui::TreePop();
+    }
+
+    // Testing ImGuiOnceUponAFrame helper.
+    //static ImGuiOnceUponAFrame once;
+    //for (int i = 0; i < 5; i++)
+    //    if (once)
+    //        ImGui::Text("This will be displayed only once.");
+
+    if (ImGui::TreeNode("Trees"))
+    {
+        if (ImGui::TreeNode("Basic trees"))
+        {
+            for (int i = 0; i < 5; i++)
+                if (ImGui::TreeNode((void*)(intptr_t)i, "Child %d", i))
+                {
+                    ImGui::Text("blah blah");
                     ImGui::SameLine();
-                ImGui::PushID(i);
-                ImGui::PushStyleColor(ImGuiCol_Button, (ImVec4)ImColor::HSV(i/7.0f, 0.6f, 0.6f));
-                ImGui::PushStyleColor(ImGuiCol_ButtonHovered, (ImVec4)ImColor::HSV(i/7.0f, 0.7f, 0.7f));
-                ImGui::PushStyleColor(ImGuiCol_ButtonActive, (ImVec4)ImColor::HSV(i/7.0f, 0.8f, 0.8f));
-                ImGui::Button("Click");
-                ImGui::PopStyleColor(3);
-                ImGui::PopID();
-            }
-
-            // Use AlignTextToFramePadding() to align text baseline to the baseline of framed elements (otherwise a Text+SameLine+Button sequence will have the text a little too high by default)
-            ImGui::AlignTextToFramePadding();
-            ImGui::Text("Hold to repeat:");
-            ImGui::SameLine();
-
-            // Arrow buttons with Repeater
-            static int counter = 0;
-            float spacing = ImGui::GetStyle().ItemInnerSpacing.x;
-            ImGui::PushButtonRepeat(true);
-            if (ImGui::ArrowButton("##left", ImGuiDir_Left)) { counter--; }
-            ImGui::SameLine(0.0f, spacing);
-            if (ImGui::ArrowButton("##right", ImGuiDir_Right)) { counter++; }
-            ImGui::PopButtonRepeat();
-            ImGui::SameLine();
-            ImGui::Text("%d", counter);
-
-            ImGui::Text("Hover over me");
-            if (ImGui::IsItemHovered())
-                ImGui::SetTooltip("I am a tooltip");
-
-            ImGui::SameLine();
-            ImGui::Text("- or me");
-            if (ImGui::IsItemHovered())
-            {
-                ImGui::BeginTooltip();
-                ImGui::Text("I am a fancy tooltip");
-                static float arr[] = { 0.6f, 0.1f, 1.0f, 0.5f, 0.92f, 0.1f, 0.2f };
-                ImGui::PlotLines("Curve", arr, IM_ARRAYSIZE(arr));
-                ImGui::EndTooltip();
-            }
-
-            ImGui::Separator();
-
-            ImGui::LabelText("label", "Value");
-
-            {
-                // Using the _simplified_ one-liner Combo() api here
-                // See "Combo" section for examples of how to use the more complete BeginCombo()/EndCombo() api.
-                const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO" };
-                static int item_current = 0;
-                ImGui::Combo("combo", &item_current, items, IM_ARRAYSIZE(items));
-                ImGui::SameLine(); ShowHelpMarker("Refer to the \"Combo\" section below for an explanation of the full BeginCombo/EndCombo API, and demonstration of various flags.\n");
-            }
-
-            {
-                static char str0[128] = "Hello, world!";
-                static int i0 = 123;
-                ImGui::InputText("input text", str0, IM_ARRAYSIZE(str0));
-                ImGui::SameLine(); ShowHelpMarker("USER:\nHold SHIFT or use mouse to select text.\n" "CTRL+Left/Right to word jump.\n" "CTRL+A or double-click to select all.\n" "CTRL+X,CTRL+C,CTRL+V clipboard.\n" "CTRL+Z,CTRL+Y undo/redo.\n" "ESCAPE to revert.\n\nPROGRAMMER:\nYou can use the ImGuiInputTextFlags_CallbackResize facility if you need to wire InputText() to a dynamic string type. See misc/cpp/imgui_stdlib.h for an example (this is not demonstrated in imgui_demo.cpp).");
-
-                ImGui::InputInt("input int", &i0);
-                ImGui::SameLine(); ShowHelpMarker("You can apply arithmetic operators +,*,/ on numerical values.\n  e.g. [ 100 ], input \'*2\', result becomes [ 200 ]\nUse +- to subtract.\n");
-
-                static float f0 = 0.001f;
-                ImGui::InputFloat("input float", &f0, 0.01f, 1.0f);
-
-                static double d0 = 999999.00000001;
-                ImGui::InputDouble("input double", &d0, 0.01f, 1.0f, "%.8f");
-
-                static float f1 = 1.e10f;
-                ImGui::InputFloat("input scientific", &f1, 0.0f, 0.0f, "%e");
-                ImGui::SameLine(); ShowHelpMarker("You can input value using the scientific notation,\n  e.g. \"1e+8\" becomes \"100000000\".\n");
-
-                static float vec4a[4] = { 0.10f, 0.20f, 0.30f, 0.44f };
-                ImGui::InputFloat3("input float3", vec4a);
-            }
-
-            {
-                static int i1 = 50, i2 = 42;
-                ImGui::DragInt("drag int", &i1, 1);
-                ImGui::SameLine(); ShowHelpMarker("Click and drag to edit value.\nHold SHIFT/ALT for faster/slower edit.\nDouble-click or CTRL+click to input value.");
-
-                ImGui::DragInt("drag int 0..100", &i2, 1, 0, 100, "%d%%");
-
-                static float f1=1.00f, f2=0.0067f;
-                ImGui::DragFloat("drag float", &f1, 0.005f);
-                ImGui::DragFloat("drag small float", &f2, 0.0001f, 0.0f, 0.0f, "%.06f ns");
-            }
-
-            {
-                static int i1=0;
-                ImGui::SliderInt("slider int", &i1, -1, 3);
-                ImGui::SameLine(); ShowHelpMarker("CTRL+click to input value.");
-
-                static float f1=0.123f, f2=0.0f;
-                ImGui::SliderFloat("slider float", &f1, 0.0f, 1.0f, "ratio = %.3f");
-                ImGui::SliderFloat("slider float (curve)", &f2, -10.0f, 10.0f, "%.4f", 2.0f);
-                static float angle = 0.0f;
-                ImGui::SliderAngle("slider angle", &angle);
-            }
-
-            {
-                static float col1[3] = { 1.0f,0.0f,0.2f };
-                static float col2[4] = { 0.4f,0.7f,0.0f,0.5f };
-                ImGui::ColorEdit3("color 1", col1);
-                ImGui::SameLine(); ShowHelpMarker("Click on the colored square to open a color picker.\nClick and hold to use drag and drop.\nRight-click on the colored square to show options.\nCTRL+click on individual component to input value.\n");
-
-                ImGui::ColorEdit4("color 2", col2);
-            }
-
-            {
-                // List box
-                const char* listbox_items[] = { "Apple", "Banana", "Cherry", "Kiwi", "Mango", "Orange", "Pineapple", "Strawberry", "Watermelon" };
-                static int listbox_item_current = 1;
-                ImGui::ListBox("listbox\n(single select)", &listbox_item_current, listbox_items, IM_ARRAYSIZE(listbox_items), 4);
-
-                //static int listbox_item_current2 = 2;
-                //ImGui::PushItemWidth(-1);
-                //ImGui::ListBox("##listbox2", &listbox_item_current2, listbox_items, IM_ARRAYSIZE(listbox_items), 4);
-                //ImGui::PopItemWidth();
-            }
-
+                    if (ImGui::SmallButton("button")) { };
+                    ImGui::TreePop();
+                }
             ImGui::TreePop();
         }
 
-        // Testing ImGuiOnceUponAFrame helper.
-        //static ImGuiOnceUponAFrame once;
-        //for (int i = 0; i < 5; i++)
-        //    if (once)
-        //        ImGui::Text("This will be displayed only once.");
-
-        if (ImGui::TreeNode("Trees"))
+        if (ImGui::TreeNode("Advanced, with Selectable nodes"))
         {
-            if (ImGui::TreeNode("Basic trees"))
+            ShowHelpMarker("This is a more standard looking tree with selectable nodes.\nClick to select, CTRL+Click to toggle, click on arrows or double-click to open.");
+            static bool align_label_with_current_x_position = false;
+            ImGui::Checkbox("Align label with current X position)", &align_label_with_current_x_position);
+            ImGui::Text("Hello!");
+            if (align_label_with_current_x_position)
+                ImGui::Unindent(ImGui::GetTreeNodeToLabelSpacing());
+
+            static int selection_mask = (1 << 2); // Dumb representation of what may be user-side selection state. You may carry selection state inside or outside your objects in whatever format you see fit.
+            int node_clicked = -1;                // Temporary storage of what node we have clicked to process selection at the end of the loop. May be a pointer to your own node type, etc.
+            ImGui::PushStyleVar(ImGuiStyleVar_IndentSpacing, ImGui::GetFontSize()*3); // Increase spacing to differentiate leaves from expanded contents.
+            for (int i = 0; i < 6; i++)
             {
-                for (int i = 0; i < 5; i++)
-                    if (ImGui::TreeNode((void*)(intptr_t)i, "Child %d", i))
+                // Disable the default open on single-click behavior and pass in Selected flag according to our selection state.
+                ImGuiTreeNodeFlags node_flags = ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick | ((selection_mask & (1 << i)) ? ImGuiTreeNodeFlags_Selected : 0);
+                if (i < 3)
+                {
+                    // Node
+                    bool node_open = ImGui::TreeNodeEx((void*)(intptr_t)i, node_flags, "Selectable Node %d", i);
+                    if (ImGui::IsItemClicked())
+                        node_clicked = i;
+                    if (node_open)
                     {
-                        ImGui::Text("blah blah");
-                        ImGui::SameLine();
-                        if (ImGui::SmallButton("button")) { };
+                        ImGui::Text("Blah blah\nBlah Blah");
                         ImGui::TreePop();
                     }
-                ImGui::TreePop();
-            }
-
-            if (ImGui::TreeNode("Advanced, with Selectable nodes"))
-            {
-                ShowHelpMarker("This is a more standard looking tree with selectable nodes.\nClick to select, CTRL+Click to toggle, click on arrows or double-click to open.");
-                static bool align_label_with_current_x_position = false;
-                ImGui::Checkbox("Align label with current X position)", &align_label_with_current_x_position);
-                ImGui::Text("Hello!");
-                if (align_label_with_current_x_position)
-                    ImGui::Unindent(ImGui::GetTreeNodeToLabelSpacing());
-
-                static int selection_mask = (1 << 2); // Dumb representation of what may be user-side selection state. You may carry selection state inside or outside your objects in whatever format you see fit.
-                int node_clicked = -1;                // Temporary storage of what node we have clicked to process selection at the end of the loop. May be a pointer to your own node type, etc.
-                ImGui::PushStyleVar(ImGuiStyleVar_IndentSpacing, ImGui::GetFontSize()*3); // Increase spacing to differentiate leaves from expanded contents.
-                for (int i = 0; i < 6; i++)
-                {
-                    // Disable the default open on single-click behavior and pass in Selected flag according to our selection state.
-                    ImGuiTreeNodeFlags node_flags = ImGuiTreeNodeFlags_OpenOnArrow | ImGuiTreeNodeFlags_OpenOnDoubleClick | ((selection_mask & (1 << i)) ? ImGuiTreeNodeFlags_Selected : 0);
-                    if (i < 3)
-                    {
-                        // Node
-                        bool node_open = ImGui::TreeNodeEx((void*)(intptr_t)i, node_flags, "Selectable Node %d", i);
-                        if (ImGui::IsItemClicked())
-                            node_clicked = i;
-                        if (node_open)
-                        {
-                            ImGui::Text("Blah blah\nBlah Blah");
-                            ImGui::TreePop();
-                        }
-                    }
-                    else
-                    {
-                        // Leaf: The only reason we have a TreeNode at all is to allow selection of the leaf. Otherwise we can use BulletText() or TreeAdvanceToLabelPos()+Text().
-                        node_flags |= ImGuiTreeNodeFlags_Leaf | ImGuiTreeNodeFlags_NoTreePushOnOpen; // ImGuiTreeNodeFlags_Bullet
-                        ImGui::TreeNodeEx((void*)(intptr_t)i, node_flags, "Selectable Leaf %d", i);
-                        if (ImGui::IsItemClicked())
-                            node_clicked = i;
-                    }
                 }
-                if (node_clicked != -1)
+                else
                 {
-                    // Update selection state. Process outside of tree loop to avoid visual inconsistencies during the clicking-frame.
-                    if (ImGui::GetIO().KeyCtrl)
-                        selection_mask ^= (1 << node_clicked);          // CTRL+click to toggle
-                    else //if (!(selection_mask & (1 << node_clicked))) // Depending on selection behavior you want, this commented bit preserve selection when clicking on item that is part of the selection
-                        selection_mask = (1 << node_clicked);           // Click to single-select
+                    // Leaf: The only reason we have a TreeNode at all is to allow selection of the leaf. Otherwise we can use BulletText() or TreeAdvanceToLabelPos()+Text().
+                    node_flags |= ImGuiTreeNodeFlags_Leaf | ImGuiTreeNodeFlags_NoTreePushOnOpen; // ImGuiTreeNodeFlags_Bullet
+                    ImGui::TreeNodeEx((void*)(intptr_t)i, node_flags, "Selectable Leaf %d", i);
+                    if (ImGui::IsItemClicked())
+                        node_clicked = i;
                 }
-                ImGui::PopStyleVar();
-                if (align_label_with_current_x_position)
-                    ImGui::Indent(ImGui::GetTreeNodeToLabelSpacing());
-                ImGui::TreePop();
             }
+            if (node_clicked != -1)
+            {
+                // Update selection state. Process outside of tree loop to avoid visual inconsistencies during the clicking-frame.
+                if (ImGui::GetIO().KeyCtrl)
+                    selection_mask ^= (1 << node_clicked);          // CTRL+click to toggle
+                else //if (!(selection_mask & (1 << node_clicked))) // Depending on selection behavior you want, this commented bit preserve selection when clicking on item that is part of the selection
+                    selection_mask = (1 << node_clicked);           // Click to single-select
+            }
+            ImGui::PopStyleVar();
+            if (align_label_with_current_x_position)
+                ImGui::Indent(ImGui::GetTreeNodeToLabelSpacing());
+            ImGui::TreePop();
+        }
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Collapsing Headers"))
+    {
+        static bool closable_group = true;
+        ImGui::Checkbox("Enable extra group", &closable_group);
+        if (ImGui::CollapsingHeader("Header"))
+        {
+            ImGui::Text("IsItemHovered: %d", ImGui::IsItemHovered());
+            for (int i = 0; i < 5; i++)
+                ImGui::Text("Some content %d", i);
+        }
+        if (ImGui::CollapsingHeader("Header with a close button", &closable_group))
+        {
+            ImGui::Text("IsItemHovered: %d", ImGui::IsItemHovered());
+            for (int i = 0; i < 5; i++)
+                ImGui::Text("More content %d", i);
+        }
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Bullets"))
+    {
+        ImGui::BulletText("Bullet point 1");
+        ImGui::BulletText("Bullet point 2\nOn multiple lines");
+        ImGui::Bullet(); ImGui::Text("Bullet point 3 (two calls)");
+        ImGui::Bullet(); ImGui::SmallButton("Button");
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Text"))
+    {
+        if (ImGui::TreeNode("Colored Text"))
+        {
+            // Using shortcut. You can use PushStyleColor()/PopStyleColor() for more flexibility.
+            ImGui::TextColored(ImVec4(1.0f,0.0f,1.0f,1.0f), "Pink");
+            ImGui::TextColored(ImVec4(1.0f,1.0f,0.0f,1.0f), "Yellow");
+            ImGui::TextDisabled("Disabled");
+            ImGui::SameLine(); ShowHelpMarker("The TextDisabled color is stored in ImGuiStyle.");
             ImGui::TreePop();
         }
 
-        if (ImGui::TreeNode("Collapsing Headers"))
+        if (ImGui::TreeNode("Word Wrapping"))
         {
-            static bool closable_group = true;
-            ImGui::Checkbox("Enable extra group", &closable_group);
-            if (ImGui::CollapsingHeader("Header"))
-            {
-                ImGui::Text("IsItemHovered: %d", ImGui::IsItemHovered());
-                for (int i = 0; i < 5; i++)
-                    ImGui::Text("Some content %d", i);
-            }
-            if (ImGui::CollapsingHeader("Header with a close button", &closable_group))
-            {
-                ImGui::Text("IsItemHovered: %d", ImGui::IsItemHovered());
-                for (int i = 0; i < 5; i++)
-                    ImGui::Text("More content %d", i);
-            }
-            ImGui::TreePop();
-        }
+            // Using shortcut. You can use PushTextWrapPos()/PopTextWrapPos() for more flexibility.
+            ImGui::TextWrapped("This text should automatically wrap on the edge of the window. The current implementation for text wrapping follows simple rules suitable for English and possibly other languages.");
+            ImGui::Spacing();
 
-        if (ImGui::TreeNode("Bullets"))
-        {
-            ImGui::BulletText("Bullet point 1");
-            ImGui::BulletText("Bullet point 2\nOn multiple lines");
-            ImGui::Bullet(); ImGui::Text("Bullet point 3 (two calls)");
-            ImGui::Bullet(); ImGui::SmallButton("Button");
-            ImGui::TreePop();
-        }
+            static float wrap_width = 200.0f;
+            ImGui::SliderFloat("Wrap width", &wrap_width, -20, 600, "%.0f");
 
-        if (ImGui::TreeNode("Text"))
-        {
-            if (ImGui::TreeNode("Colored Text"))
-            {
-                // Using shortcut. You can use PushStyleColor()/PopStyleColor() for more flexibility.
-                ImGui::TextColored(ImVec4(1.0f,0.0f,1.0f,1.0f), "Pink");
-                ImGui::TextColored(ImVec4(1.0f,1.0f,0.0f,1.0f), "Yellow");
-                ImGui::TextDisabled("Disabled");
-                ImGui::SameLine(); ShowHelpMarker("The TextDisabled color is stored in ImGuiStyle.");
-                ImGui::TreePop();
-            }
-
-            if (ImGui::TreeNode("Word Wrapping"))
-            {
-                // Using shortcut. You can use PushTextWrapPos()/PopTextWrapPos() for more flexibility.
-                ImGui::TextWrapped("This text should automatically wrap on the edge of the window. The current implementation for text wrapping follows simple rules suitable for English and possibly other languages.");
-                ImGui::Spacing();
-
-                static float wrap_width = 200.0f;
-                ImGui::SliderFloat("Wrap width", &wrap_width, -20, 600, "%.0f");
-
-                ImGui::Text("Test paragraph 1:");
-                ImVec2 pos = ImGui::GetCursorScreenPos();
-                ImGui::GetWindowDrawList()->AddRectFilled(ImVec2(pos.x + wrap_width, pos.y), ImVec2(pos.x + wrap_width + 10, pos.y + ImGui::GetTextLineHeight()), IM_COL32(255,0,255,255));
-                ImGui::PushTextWrapPos(ImGui::GetCursorPos().x + wrap_width);
-                ImGui::Text("The lazy dog is a good dog. This paragraph is made to fit within %.0f pixels. Testing a 1 character word. The quick brown fox jumps over the lazy dog.", wrap_width);
-                ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255,255,0,255));
-                ImGui::PopTextWrapPos();
-
-                ImGui::Text("Test paragraph 2:");
-                pos = ImGui::GetCursorScreenPos();
-                ImGui::GetWindowDrawList()->AddRectFilled(ImVec2(pos.x + wrap_width, pos.y), ImVec2(pos.x + wrap_width + 10, pos.y + ImGui::GetTextLineHeight()), IM_COL32(255,0,255,255));
-                ImGui::PushTextWrapPos(ImGui::GetCursorPos().x + wrap_width);
-                ImGui::Text("aaaaaaaa bbbbbbbb, c cccccccc,dddddddd. d eeeeeeee   ffffffff. gggggggg!hhhhhhhh");
-                ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255,255,0,255));
-                ImGui::PopTextWrapPos();
-
-                ImGui::TreePop();
-            }
-
-            if (ImGui::TreeNode("UTF-8 Text"))
-            {
-                // UTF-8 test with Japanese characters
-                // (Needs a suitable font, try Noto, or Arial Unicode, or M+ fonts. Read misc/fonts/README.txt for details.)
-                // - From C++11 you can use the u8"my text" syntax to encode literal strings as UTF-8
-                // - For earlier compiler, you may be able to encode your sources as UTF-8 (e.g. Visual Studio save your file as 'UTF-8 without signature')
-                // - FOR THIS DEMO FILE ONLY, BECAUSE WE WANT TO SUPPORT OLD COMPILERS, WE ARE *NOT* INCLUDING RAW UTF-8 CHARACTERS IN THIS SOURCE FILE.
-                //   Instead we are encoding a few strings with hexadecimal constants. Don't do this in your application!
-                //   Please use u8"text in any language" in your application!
-                // Note that characters values are preserved even by InputText() if the font cannot be displayed, so you can safely copy & paste garbled characters into another application.
-                ImGui::TextWrapped("CJK text will only appears if the font was loaded with the appropriate CJK character ranges. Call io.Font->LoadFromFileTTF() manually to load extra character ranges. Read misc/fonts/README.txt for details.");
-                ImGui::Text("Hiragana: \xe3\x81\x8b\xe3\x81\x8d\xe3\x81\x8f\xe3\x81\x91\xe3\x81\x93 (kakikukeko)"); // Normally we would use u8"blah blah" with the proper characters directly in the string.
-                ImGui::Text("Kanjis: \xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e (nihongo)");
-                static char buf[32] = "\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e";
-                //static char buf[32] = u8"NIHONGO"; // <- this is how you would write it with C++11, using real kanjis
-                ImGui::InputText("UTF-8 input", buf, IM_ARRAYSIZE(buf));
-                ImGui::TreePop();
-            }
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Images"))
-        {
-            ImGuiIO& io = ImGui::GetIO();
-            ImGui::TextWrapped("Below we are displaying the font texture (which is the only texture we have access to in this demo). Use the 'ImTextureID' type as storage to pass pointers or identifier to your own texture data. Hover the texture for a zoomed view!");
-
-            // Here we are grabbing the font texture because that's the only one we have access to inside the demo code.
-            // Remember that ImTextureID is just storage for whatever you want it to be, it is essentially a value that will be passed to the render function inside the ImDrawCmd structure.
-            // If you use one of the default imgui_impl_XXXX.cpp renderer, they all have comments at the top of their file to specify what they expect to be stored in ImTextureID.
-            // (for example, the imgui_impl_dx11.cpp renderer expect a 'ID3D11ShaderResourceView*' pointer. The imgui_impl_glfw_gl3.cpp renderer expect a GLuint OpenGL texture identifier etc.)
-            // If you decided that ImTextureID = MyEngineTexture*, then you can pass your MyEngineTexture* pointers to ImGui::Image(), and gather width/height through your own functions, etc.
-            // Using ShowMetricsWindow() as a "debugger" to inspect the draw data that are being passed to your render will help you debug issues if you are confused about this.
-            // Consider using the lower-level ImDrawList::AddImage() API, via ImGui::GetWindowDrawList()->AddImage().
-            ImTextureID my_tex_id = io.Fonts->TexID;
-            float my_tex_w = (float)io.Fonts->TexWidth;
-            float my_tex_h = (float)io.Fonts->TexHeight;
-
-            ImGui::Text("%.0fx%.0f", my_tex_w, my_tex_h);
+            ImGui::Text("Test paragraph 1:");
             ImVec2 pos = ImGui::GetCursorScreenPos();
-            ImGui::Image(my_tex_id, ImVec2(my_tex_w, my_tex_h), ImVec2(0,0), ImVec2(1,1), ImColor(255,255,255,255), ImColor(255,255,255,128));
-            if (ImGui::IsItemHovered())
+            ImGui::GetWindowDrawList()->AddRectFilled(ImVec2(pos.x + wrap_width, pos.y), ImVec2(pos.x + wrap_width + 10, pos.y + ImGui::GetTextLineHeight()), IM_COL32(255,0,255,255));
+            ImGui::PushTextWrapPos(ImGui::GetCursorPos().x + wrap_width);
+            ImGui::Text("The lazy dog is a good dog. This paragraph is made to fit within %.0f pixels. Testing a 1 character word. The quick brown fox jumps over the lazy dog.", wrap_width);
+            ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255,255,0,255));
+            ImGui::PopTextWrapPos();
+
+            ImGui::Text("Test paragraph 2:");
+            pos = ImGui::GetCursorScreenPos();
+            ImGui::GetWindowDrawList()->AddRectFilled(ImVec2(pos.x + wrap_width, pos.y), ImVec2(pos.x + wrap_width + 10, pos.y + ImGui::GetTextLineHeight()), IM_COL32(255,0,255,255));
+            ImGui::PushTextWrapPos(ImGui::GetCursorPos().x + wrap_width);
+            ImGui::Text("aaaaaaaa bbbbbbbb, c cccccccc,dddddddd. d eeeeeeee   ffffffff. gggggggg!hhhhhhhh");
+            ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255,255,0,255));
+            ImGui::PopTextWrapPos();
+
+            ImGui::TreePop();
+        }
+
+        if (ImGui::TreeNode("UTF-8 Text"))
+        {
+            // UTF-8 test with Japanese characters
+            // (Needs a suitable font, try Noto, or Arial Unicode, or M+ fonts. Read misc/fonts/README.txt for details.)
+            // - From C++11 you can use the u8"my text" syntax to encode literal strings as UTF-8
+            // - For earlier compiler, you may be able to encode your sources as UTF-8 (e.g. Visual Studio save your file as 'UTF-8 without signature')
+            // - FOR THIS DEMO FILE ONLY, BECAUSE WE WANT TO SUPPORT OLD COMPILERS, WE ARE *NOT* INCLUDING RAW UTF-8 CHARACTERS IN THIS SOURCE FILE.
+            //   Instead we are encoding a few strings with hexadecimal constants. Don't do this in your application!
+            //   Please use u8"text in any language" in your application!
+            // Note that characters values are preserved even by InputText() if the font cannot be displayed, so you can safely copy & paste garbled characters into another application.
+            ImGui::TextWrapped("CJK text will only appears if the font was loaded with the appropriate CJK character ranges. Call io.Font->LoadFromFileTTF() manually to load extra character ranges. Read misc/fonts/README.txt for details.");
+            ImGui::Text("Hiragana: \xe3\x81\x8b\xe3\x81\x8d\xe3\x81\x8f\xe3\x81\x91\xe3\x81\x93 (kakikukeko)"); // Normally we would use u8"blah blah" with the proper characters directly in the string.
+            ImGui::Text("Kanjis: \xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e (nihongo)");
+            static char buf[32] = "\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e";
+            //static char buf[32] = u8"NIHONGO"; // <- this is how you would write it with C++11, using real kanjis
+            ImGui::InputText("UTF-8 input", buf, IM_ARRAYSIZE(buf));
+            ImGui::TreePop();
+        }
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Images"))
+    {
+        ImGuiIO& io = ImGui::GetIO();
+        ImGui::TextWrapped("Below we are displaying the font texture (which is the only texture we have access to in this demo). Use the 'ImTextureID' type as storage to pass pointers or identifier to your own texture data. Hover the texture for a zoomed view!");
+
+        // Here we are grabbing the font texture because that's the only one we have access to inside the demo code.
+        // Remember that ImTextureID is just storage for whatever you want it to be, it is essentially a value that will be passed to the render function inside the ImDrawCmd structure.
+        // If you use one of the default imgui_impl_XXXX.cpp renderer, they all have comments at the top of their file to specify what they expect to be stored in ImTextureID.
+        // (for example, the imgui_impl_dx11.cpp renderer expect a 'ID3D11ShaderResourceView*' pointer. The imgui_impl_glfw_gl3.cpp renderer expect a GLuint OpenGL texture identifier etc.)
+        // If you decided that ImTextureID = MyEngineTexture*, then you can pass your MyEngineTexture* pointers to ImGui::Image(), and gather width/height through your own functions, etc.
+        // Using ShowMetricsWindow() as a "debugger" to inspect the draw data that are being passed to your render will help you debug issues if you are confused about this.
+        // Consider using the lower-level ImDrawList::AddImage() API, via ImGui::GetWindowDrawList()->AddImage().
+        ImTextureID my_tex_id = io.Fonts->TexID;
+        float my_tex_w = (float)io.Fonts->TexWidth;
+        float my_tex_h = (float)io.Fonts->TexHeight;
+
+        ImGui::Text("%.0fx%.0f", my_tex_w, my_tex_h);
+        ImVec2 pos = ImGui::GetCursorScreenPos();
+        ImGui::Image(my_tex_id, ImVec2(my_tex_w, my_tex_h), ImVec2(0,0), ImVec2(1,1), ImColor(255,255,255,255), ImColor(255,255,255,128));
+        if (ImGui::IsItemHovered())
+        {
+            ImGui::BeginTooltip();
+            float region_sz = 32.0f;
+            float region_x = io.MousePos.x - pos.x - region_sz * 0.5f; if (region_x < 0.0f) region_x = 0.0f; else if (region_x > my_tex_w - region_sz) region_x = my_tex_w - region_sz;
+            float region_y = io.MousePos.y - pos.y - region_sz * 0.5f; if (region_y < 0.0f) region_y = 0.0f; else if (region_y > my_tex_h - region_sz) region_y = my_tex_h - region_sz;
+            float zoom = 4.0f;
+            ImGui::Text("Min: (%.2f, %.2f)", region_x, region_y);
+            ImGui::Text("Max: (%.2f, %.2f)", region_x + region_sz, region_y + region_sz);
+            ImVec2 uv0 = ImVec2((region_x) / my_tex_w, (region_y) / my_tex_h);
+            ImVec2 uv1 = ImVec2((region_x + region_sz) / my_tex_w, (region_y + region_sz) / my_tex_h);
+            ImGui::Image(my_tex_id, ImVec2(region_sz * zoom, region_sz * zoom), uv0, uv1, ImColor(255,255,255,255), ImColor(255,255,255,128));
+            ImGui::EndTooltip();
+        }
+        ImGui::TextWrapped("And now some textured buttons..");
+        static int pressed_count = 0;
+        for (int i = 0; i < 8; i++)
+        {
+            ImGui::PushID(i);
+            int frame_padding = -1 + i;     // -1 = uses default padding
+            if (ImGui::ImageButton(my_tex_id, ImVec2(32,32), ImVec2(0,0), ImVec2(32.0f/my_tex_w,32/my_tex_h), frame_padding, ImColor(0,0,0,255)))
+                pressed_count += 1;
+            ImGui::PopID();
+            ImGui::SameLine();
+        }
+        ImGui::NewLine();
+        ImGui::Text("Pressed %d times.", pressed_count);
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Combo"))
+    {
+        // Expose flags as checkbox for the demo
+        static ImGuiComboFlags flags = 0;
+        ImGui::CheckboxFlags("ImGuiComboFlags_PopupAlignLeft", (unsigned int*)&flags, ImGuiComboFlags_PopupAlignLeft);
+        if (ImGui::CheckboxFlags("ImGuiComboFlags_NoArrowButton", (unsigned int*)&flags, ImGuiComboFlags_NoArrowButton))
+            flags &= ~ImGuiComboFlags_NoPreview;     // Clear the other flag, as we cannot combine both
+        if (ImGui::CheckboxFlags("ImGuiComboFlags_NoPreview", (unsigned int*)&flags, ImGuiComboFlags_NoPreview))
+            flags &= ~ImGuiComboFlags_NoArrowButton; // Clear the other flag, as we cannot combine both
+
+        // General BeginCombo() API, you have full control over your selection data and display type.
+        // (your selection data could be an index, a pointer to the object, an id for the object, a flag stored in the object itself, etc.)
+        const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO" };
+        static const char* item_current = items[0];            // Here our selection is a single pointer stored outside the object.
+        if (ImGui::BeginCombo("combo 1", item_current, flags)) // The second parameter is the label previewed before opening the combo.
+        {
+            for (int n = 0; n < IM_ARRAYSIZE(items); n++)
             {
-                ImGui::BeginTooltip();
-                float region_sz = 32.0f;
-                float region_x = io.MousePos.x - pos.x - region_sz * 0.5f; if (region_x < 0.0f) region_x = 0.0f; else if (region_x > my_tex_w - region_sz) region_x = my_tex_w - region_sz;
-                float region_y = io.MousePos.y - pos.y - region_sz * 0.5f; if (region_y < 0.0f) region_y = 0.0f; else if (region_y > my_tex_h - region_sz) region_y = my_tex_h - region_sz;
-                float zoom = 4.0f;
-                ImGui::Text("Min: (%.2f, %.2f)", region_x, region_y);
-                ImGui::Text("Max: (%.2f, %.2f)", region_x + region_sz, region_y + region_sz);
-                ImVec2 uv0 = ImVec2((region_x) / my_tex_w, (region_y) / my_tex_h);
-                ImVec2 uv1 = ImVec2((region_x + region_sz) / my_tex_w, (region_y + region_sz) / my_tex_h);
-                ImGui::Image(my_tex_id, ImVec2(region_sz * zoom, region_sz * zoom), uv0, uv1, ImColor(255,255,255,255), ImColor(255,255,255,128));
-                ImGui::EndTooltip();
+                bool is_selected = (item_current == items[n]);
+                if (ImGui::Selectable(items[n], is_selected))
+                    item_current = items[n];
+                if (is_selected)
+                    ImGui::SetItemDefaultFocus();   // Set the initial focus when opening the combo (scrolling + for keyboard navigation support in the upcoming navigation branch)
             }
-            ImGui::TextWrapped("And now some textured buttons..");
-            static int pressed_count = 0;
-            for (int i = 0; i < 8; i++)
+            ImGui::EndCombo();
+        }
+
+        // Simplified one-liner Combo() API, using values packed in a single constant string
+        static int item_current_2 = 0;
+        ImGui::Combo("combo 2 (one-liner)", &item_current_2, "aaaa\0bbbb\0cccc\0dddd\0eeee\0\0");
+
+        // Simplified one-liner Combo() using an array of const char*
+        static int item_current_3 = -1; // If the selection isn't within 0..count, Combo won't display a preview
+        ImGui::Combo("combo 3 (array)", &item_current_3, items, IM_ARRAYSIZE(items));
+
+        // Simplified one-liner Combo() using an accessor function
+        struct FuncHolder { static bool ItemGetter(void* data, int idx, const char** out_str) { *out_str = ((const char**)data)[idx]; return true; } };
+        static int item_current_4 = 0;
+        ImGui::Combo("combo 4 (function)", &item_current_4, &FuncHolder::ItemGetter, items, IM_ARRAYSIZE(items));
+
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Selectables"))
+    {
+        // Selectable() has 2 overloads:
+        // - The one taking "bool selected" as a read-only selection information. When Selectable() has been clicked is returns true and you can alter selection state accordingly.
+        // - The one taking "bool* p_selected" as a read-write selection information (convenient in some cases)
+        // The earlier is more flexible, as in real application your selection may be stored in a different manner (in flags within objects, as an external list, etc).
+        if (ImGui::TreeNode("Basic"))
+        {
+            static bool selection[5] = { false, true, false, false, false };
+            ImGui::Selectable("1. I am selectable", &selection[0]);
+            ImGui::Selectable("2. I am selectable", &selection[1]);
+            ImGui::Text("3. I am not selectable");
+            ImGui::Selectable("4. I am selectable", &selection[3]);
+            if (ImGui::Selectable("5. I am double clickable", selection[4], ImGuiSelectableFlags_AllowDoubleClick))
+                if (ImGui::IsMouseDoubleClicked(0))
+                    selection[4] = !selection[4];
+            ImGui::TreePop();
+        }
+        if (ImGui::TreeNode("Selection State: Single Selection"))
+        {
+            static int selected = -1;
+            for (int n = 0; n < 5; n++)
+            {
+                char buf[32];
+                sprintf(buf, "Object %d", n);
+                if (ImGui::Selectable(buf, selected == n))
+                    selected = n;
+            }
+            ImGui::TreePop();
+        }
+        if (ImGui::TreeNode("Selection State: Multiple Selection"))
+        {
+            ShowHelpMarker("Hold CTRL and click to select multiple items.");
+            static bool selection[5] = { false, false, false, false, false };
+            for (int n = 0; n < 5; n++)
+            {
+                char buf[32];
+                sprintf(buf, "Object %d", n);
+                if (ImGui::Selectable(buf, selection[n]))
+                {
+                    if (!ImGui::GetIO().KeyCtrl)    // Clear selection when CTRL is not held
+                        memset(selection, 0, sizeof(selection));
+                    selection[n] ^= 1;
+                }
+            }
+            ImGui::TreePop();
+        }
+        if (ImGui::TreeNode("Rendering more text into the same line"))
+        {
+            // Using the Selectable() override that takes "bool* p_selected" parameter and toggle your booleans automatically.
+            static bool selected[3] = { false, false, false };
+            ImGui::Selectable("main.c",    &selected[0]); ImGui::SameLine(300); ImGui::Text(" 2,345 bytes");
+            ImGui::Selectable("Hello.cpp", &selected[1]); ImGui::SameLine(300); ImGui::Text("12,345 bytes");
+            ImGui::Selectable("Hello.h",   &selected[2]); ImGui::SameLine(300); ImGui::Text(" 2,345 bytes");
+            ImGui::TreePop();
+        }
+        if (ImGui::TreeNode("In columns"))
+        {
+            ImGui::Columns(3, NULL, false);
+            static bool selected[16] = { 0 };
+            for (int i = 0; i < 16; i++)
+            {
+                char label[32]; sprintf(label, "Item %d", i);
+                if (ImGui::Selectable(label, &selected[i])) {}
+                ImGui::NextColumn();
+            }
+            ImGui::Columns(1);
+            ImGui::TreePop();
+        }
+        if (ImGui::TreeNode("Grid"))
+        {
+            static bool selected[16] = { true, false, false, false, false, true, false, false, false, false, true, false, false, false, false, true };
+            for (int i = 0; i < 16; i++)
             {
                 ImGui::PushID(i);
-                int frame_padding = -1 + i;     // -1 = uses default padding
-                if (ImGui::ImageButton(my_tex_id, ImVec2(32,32), ImVec2(0,0), ImVec2(32.0f/my_tex_w,32/my_tex_h), frame_padding, ImColor(0,0,0,255)))
-                    pressed_count += 1;
+                if (ImGui::Selectable("Sailor", &selected[i], 0, ImVec2(50,50)))
+                {
+                    int x = i % 4, y = i / 4;
+                    if (x > 0) selected[i - 1] ^= 1;
+                    if (x < 3) selected[i + 1] ^= 1;
+                    if (y > 0) selected[i - 4] ^= 1;
+                    if (y < 3) selected[i + 4] ^= 1;
+                }
+                if ((i % 4) < 3) ImGui::SameLine();
                 ImGui::PopID();
+            }
+            ImGui::TreePop();
+        }
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Filtered Text Input"))
+    {
+        static char buf1[64] = ""; ImGui::InputText("default", buf1, 64);
+        static char buf2[64] = ""; ImGui::InputText("decimal", buf2, 64, ImGuiInputTextFlags_CharsDecimal);
+        static char buf3[64] = ""; ImGui::InputText("hexadecimal", buf3, 64, ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase);
+        static char buf4[64] = ""; ImGui::InputText("uppercase", buf4, 64, ImGuiInputTextFlags_CharsUppercase);
+        static char buf5[64] = ""; ImGui::InputText("no blank", buf5, 64, ImGuiInputTextFlags_CharsNoBlank);
+        struct TextFilters { static int FilterImGuiLetters(ImGuiInputTextCallbackData* data) { if (data->EventChar < 256 && strchr("imgui", (char)data->EventChar)) return 0; return 1; } };
+        static char buf6[64] = ""; ImGui::InputText("\"imgui\" letters", buf6, 64, ImGuiInputTextFlags_CallbackCharFilter, TextFilters::FilterImGuiLetters);
+
+        ImGui::Text("Password input");
+        static char bufpass[64] = "password123";
+        ImGui::InputText("password", bufpass, 64, ImGuiInputTextFlags_Password | ImGuiInputTextFlags_CharsNoBlank);
+        ImGui::SameLine(); ShowHelpMarker("Display all characters as '*'.\nDisable clipboard cut and copy.\nDisable logging.\n");
+        ImGui::InputText("password (clear)", bufpass, 64, ImGuiInputTextFlags_CharsNoBlank);
+
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Multi-line Text Input"))
+    {
+        static bool read_only = false;
+        static char text[1024*16] =
+            "/*\n"
+            " The Pentium F00F bug, shorthand for F0 0F C7 C8,\n"
+            " the hexadecimal encoding of one offending instruction,\n"
+            " more formally, the invalid operand with locked CMPXCHG8B\n"
+            " instruction bug, is a design flaw in the majority of\n"
+            " Intel Pentium, Pentium MMX, and Pentium OverDrive\n"
+            " processors (all in the P5 microarchitecture).\n"
+            "*/\n\n"
+            "label:\n"
+            "\tlock cmpxchg8b eax\n";
+
+        ShowHelpMarker("You can use the ImGuiInputTextFlags_CallbackResize facility if you need to wire InputTextMultiline() to a dynamic string type. See misc/cpp/imgui_stdlib.h for an example. (This is not demonstrated in imgui_demo.cpp)");
+        ImGui::Checkbox("Read-only", &read_only);
+        ImGuiInputTextFlags flags = ImGuiInputTextFlags_AllowTabInput | (read_only ? ImGuiInputTextFlags_ReadOnly : 0);
+        ImGui::InputTextMultiline("##source", text, IM_ARRAYSIZE(text), ImVec2(-1.0f, ImGui::GetTextLineHeight() * 16), flags);
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Plots Widgets"))
+    {
+        static bool animate = true;
+        ImGui::Checkbox("Animate", &animate);
+
+        static float arr[] = { 0.6f, 0.1f, 1.0f, 0.5f, 0.92f, 0.1f, 0.2f };
+        ImGui::PlotLines("Frame Times", arr, IM_ARRAYSIZE(arr));
+
+        // Create a dummy array of contiguous float values to plot
+        // Tip: If your float aren't contiguous but part of a structure, you can pass a pointer to your first float and the sizeof() of your structure in the Stride parameter.
+        static float values[90] = { 0 };
+        static int values_offset = 0;
+        static double refresh_time = 0.0;
+        if (!animate || refresh_time == 0.0f)
+            refresh_time = ImGui::GetTime();
+        while (refresh_time < ImGui::GetTime()) // Create dummy data at fixed 60 hz rate for the demo
+        {
+            static float phase = 0.0f;
+            values[values_offset] = cosf(phase);
+            values_offset = (values_offset+1) % IM_ARRAYSIZE(values);
+            phase += 0.10f*values_offset;
+            refresh_time += 1.0f/60.0f;
+        }
+        ImGui::PlotLines("Lines", values, IM_ARRAYSIZE(values), values_offset, "avg 0.0", -1.0f, 1.0f, ImVec2(0,80));
+        ImGui::PlotHistogram("Histogram", arr, IM_ARRAYSIZE(arr), 0, NULL, 0.0f, 1.0f, ImVec2(0,80));
+
+        // Use functions to generate output
+        // FIXME: This is rather awkward because current plot API only pass in indices. We probably want an API passing floats and user provide sample rate/count.
+        struct Funcs
+        {
+            static float Sin(void*, int i) { return sinf(i * 0.1f); }
+            static float Saw(void*, int i) { return (i & 1) ? 1.0f : -1.0f; }
+        };
+        static int func_type = 0, display_count = 70;
+        ImGui::Separator();
+        ImGui::PushItemWidth(100); ImGui::Combo("func", &func_type, "Sin\0Saw\0"); ImGui::PopItemWidth();
+        ImGui::SameLine();
+        ImGui::SliderInt("Sample count", &display_count, 1, 400);
+        float (*func)(void*, int) = (func_type == 0) ? Funcs::Sin : Funcs::Saw;
+        ImGui::PlotLines("Lines", func, NULL, display_count, 0, NULL, -1.0f, 1.0f, ImVec2(0,80));
+        ImGui::PlotHistogram("Histogram", func, NULL, display_count, 0, NULL, -1.0f, 1.0f, ImVec2(0,80));
+        ImGui::Separator();
+
+        // Animate a simple progress bar
+        static float progress = 0.0f, progress_dir = 1.0f;
+        if (animate)
+        {
+            progress += progress_dir * 0.4f * ImGui::GetIO().DeltaTime;
+            if (progress >= +1.1f) { progress = +1.1f; progress_dir *= -1.0f; }
+            if (progress <= -0.1f) { progress = -0.1f; progress_dir *= -1.0f; }
+        }
+
+        // Typically we would use ImVec2(-1.0f,0.0f) to use all available width, or ImVec2(width,0.0f) for a specified width. ImVec2(0.0f,0.0f) uses ItemWidth.
+        ImGui::ProgressBar(progress, ImVec2(0.0f,0.0f));
+        ImGui::SameLine(0.0f, ImGui::GetStyle().ItemInnerSpacing.x);
+        ImGui::Text("Progress Bar");
+
+        float progress_saturated = (progress < 0.0f) ? 0.0f : (progress > 1.0f) ? 1.0f : progress;
+        char buf[32];
+        sprintf(buf, "%d/%d", (int)(progress_saturated*1753), 1753);
+        ImGui::ProgressBar(progress, ImVec2(0.f,0.f), buf);
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Color/Picker Widgets"))
+    {
+        static ImVec4 color = ImColor(114, 144, 154, 200);
+
+        static bool alpha_preview = true;
+        static bool alpha_half_preview = false;
+        static bool drag_and_drop = true;
+        static bool options_menu = true;
+        static bool hdr = false;
+        ImGui::Checkbox("With Alpha Preview", &alpha_preview);
+        ImGui::Checkbox("With Half Alpha Preview", &alpha_half_preview);
+        ImGui::Checkbox("With Drag and Drop", &drag_and_drop);
+        ImGui::Checkbox("With Options Menu", &options_menu); ImGui::SameLine(); ShowHelpMarker("Right-click on the individual color widget to show options.");
+        ImGui::Checkbox("With HDR", &hdr); ImGui::SameLine(); ShowHelpMarker("Currently all this does is to lift the 0..1 limits on dragging widgets.");
+        int misc_flags = (hdr ? ImGuiColorEditFlags_HDR : 0) | (drag_and_drop ? 0 : ImGuiColorEditFlags_NoDragDrop) | (alpha_half_preview ? ImGuiColorEditFlags_AlphaPreviewHalf : (alpha_preview ? ImGuiColorEditFlags_AlphaPreview : 0)) | (options_menu ? 0 : ImGuiColorEditFlags_NoOptions);
+
+        ImGui::Text("Color widget:");
+        ImGui::SameLine(); ShowHelpMarker("Click on the colored square to open a color picker.\nCTRL+click on individual component to input value.\n");
+        ImGui::ColorEdit3("MyColor##1", (float*)&color, misc_flags);
+
+        ImGui::Text("Color widget HSV with Alpha:");
+        ImGui::ColorEdit4("MyColor##2", (float*)&color, ImGuiColorEditFlags_HSV | misc_flags);
+
+        ImGui::Text("Color widget with Float Display:");
+        ImGui::ColorEdit4("MyColor##2f", (float*)&color, ImGuiColorEditFlags_Float | misc_flags);
+
+        ImGui::Text("Color button with Picker:");
+        ImGui::SameLine(); ShowHelpMarker("With the ImGuiColorEditFlags_NoInputs flag you can hide all the slider/text inputs.\nWith the ImGuiColorEditFlags_NoLabel flag you can pass a non-empty label which will only be used for the tooltip and picker popup.");
+        ImGui::ColorEdit4("MyColor##3", (float*)&color, ImGuiColorEditFlags_NoInputs | ImGuiColorEditFlags_NoLabel | misc_flags);
+
+        ImGui::Text("Color button with Custom Picker Popup:");
+
+        // Generate a dummy palette
+        static bool saved_palette_inited = false;
+        static ImVec4 saved_palette[32];
+        if (!saved_palette_inited)
+            for (int n = 0; n < IM_ARRAYSIZE(saved_palette); n++)
+            {
+                ImGui::ColorConvertHSVtoRGB(n / 31.0f, 0.8f, 0.8f, saved_palette[n].x, saved_palette[n].y, saved_palette[n].z);
+                saved_palette[n].w = 1.0f; // Alpha
+            }
+        saved_palette_inited = true;
+
+        static ImVec4 backup_color;
+        bool open_popup = ImGui::ColorButton("MyColor##3b", color, misc_flags);
+        ImGui::SameLine();
+        open_popup |= ImGui::Button("Palette");
+        if (open_popup)
+        {
+            ImGui::OpenPopup("mypicker");
+            backup_color = color;
+        }
+        if (ImGui::BeginPopup("mypicker"))
+        {
+            // FIXME: Adding a drag and drop example here would be perfect!
+            ImGui::Text("MY CUSTOM COLOR PICKER WITH AN AMAZING PALETTE!");
+            ImGui::Separator();
+            ImGui::ColorPicker4("##picker", (float*)&color, misc_flags | ImGuiColorEditFlags_NoSidePreview | ImGuiColorEditFlags_NoSmallPreview);
+            ImGui::SameLine();
+            ImGui::BeginGroup();
+            ImGui::Text("Current");
+            ImGui::ColorButton("##current", color, ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_AlphaPreviewHalf, ImVec2(60,40));
+            ImGui::Text("Previous");
+            if (ImGui::ColorButton("##previous", backup_color, ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_AlphaPreviewHalf, ImVec2(60,40)))
+                color = backup_color;
+            ImGui::Separator();
+            ImGui::Text("Palette");
+            for (int n = 0; n < IM_ARRAYSIZE(saved_palette); n++)
+            {
+                ImGui::PushID(n);
+                if ((n % 8) != 0)
+                    ImGui::SameLine(0.0f, ImGui::GetStyle().ItemSpacing.y);
+                if (ImGui::ColorButton("##palette", saved_palette[n], ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_NoTooltip, ImVec2(20,20)))
+                    color = ImVec4(saved_palette[n].x, saved_palette[n].y, saved_palette[n].z, color.w); // Preserve alpha!
+
+                if (ImGui::BeginDragDropTarget())
+                {
+                    if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
+                        memcpy((float*)&saved_palette[n], payload->Data, sizeof(float) * 3);
+                    if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
+                        memcpy((float*)&saved_palette[n], payload->Data, sizeof(float) * 4);
+                    ImGui::EndDragDropTarget();
+                }
+
+                ImGui::PopID();
+            }
+            ImGui::EndGroup();
+            ImGui::EndPopup();
+        }
+
+        ImGui::Text("Color button only:");
+        ImGui::ColorButton("MyColor##3c", *(ImVec4*)&color, misc_flags, ImVec2(80,80));
+
+        ImGui::Text("Color picker:");
+        static bool alpha = true;
+        static bool alpha_bar = true;
+        static bool side_preview = true;
+        static bool ref_color = false;
+        static ImVec4 ref_color_v(1.0f,0.0f,1.0f,0.5f);
+        static int inputs_mode = 2;
+        static int picker_mode = 0;
+        ImGui::Checkbox("With Alpha", &alpha);
+        ImGui::Checkbox("With Alpha Bar", &alpha_bar);
+        ImGui::Checkbox("With Side Preview", &side_preview);
+        if (side_preview)
+        {
+            ImGui::SameLine();
+            ImGui::Checkbox("With Ref Color", &ref_color);
+            if (ref_color)
+            {
                 ImGui::SameLine();
+                ImGui::ColorEdit4("##RefColor", &ref_color_v.x, ImGuiColorEditFlags_NoInputs | misc_flags);
             }
-            ImGui::NewLine();
-            ImGui::Text("Pressed %d times.", pressed_count);
-            ImGui::TreePop();
+        }
+        ImGui::Combo("Inputs Mode", &inputs_mode, "All Inputs\0No Inputs\0RGB Input\0HSV Input\0HEX Input\0");
+        ImGui::Combo("Picker Mode", &picker_mode, "Auto/Current\0Hue bar + SV rect\0Hue wheel + SV triangle\0");
+        ImGui::SameLine(); ShowHelpMarker("User can right-click the picker to change mode.");
+        ImGuiColorEditFlags flags = misc_flags;
+        if (!alpha) flags |= ImGuiColorEditFlags_NoAlpha; // This is by default if you call ColorPicker3() instead of ColorPicker4()
+        if (alpha_bar) flags |= ImGuiColorEditFlags_AlphaBar;
+        if (!side_preview) flags |= ImGuiColorEditFlags_NoSidePreview;
+        if (picker_mode == 1) flags |= ImGuiColorEditFlags_PickerHueBar;
+        if (picker_mode == 2) flags |= ImGuiColorEditFlags_PickerHueWheel;
+        if (inputs_mode == 1) flags |= ImGuiColorEditFlags_NoInputs;
+        if (inputs_mode == 2) flags |= ImGuiColorEditFlags_RGB;
+        if (inputs_mode == 3) flags |= ImGuiColorEditFlags_HSV;
+        if (inputs_mode == 4) flags |= ImGuiColorEditFlags_HEX;
+        ImGui::ColorPicker4("MyColor##4", (float*)&color, flags, ref_color ? &ref_color_v.x : NULL);
+
+        ImGui::Text("Programmatically set defaults:");
+        ImGui::SameLine(); ShowHelpMarker("SetColorEditOptions() is designed to allow you to set boot-time default.\nWe don't have Push/Pop functions because you can force options on a per-widget basis if needed, and the user can change non-forced ones with the options menu.\nWe don't have a getter to avoid encouraging you to persistently save values that aren't forward-compatible.");
+        if (ImGui::Button("Default: Uint8 + HSV + Hue Bar"))
+            ImGui::SetColorEditOptions(ImGuiColorEditFlags_Uint8 | ImGuiColorEditFlags_HSV | ImGuiColorEditFlags_PickerHueBar);
+        if (ImGui::Button("Default: Float + HDR + Hue Wheel"))
+            ImGui::SetColorEditOptions(ImGuiColorEditFlags_Float | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_PickerHueWheel);
+
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Range Widgets"))
+    {
+        static float begin = 10, end = 90;
+        static int begin_i = 100, end_i = 1000;
+        ImGui::DragFloatRange2("range", &begin, &end, 0.25f, 0.0f, 100.0f, "Min: %.1f %%", "Max: %.1f %%");
+        ImGui::DragIntRange2("range int (no bounds)", &begin_i, &end_i, 5, 0, 0, "Min: %d units", "Max: %d units");
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Data Types"))
+    {
+        // The DragScalar/InputScalar/SliderScalar functions allow various data types: signed/unsigned int/long long and float/double
+        // To avoid polluting the public API with all possible combinations, we use the ImGuiDataType enum to pass the type, 
+        // and passing all arguments by address. 
+        // This is the reason the test code below creates local variables to hold "zero" "one" etc. for each types.
+        // In practice, if you frequently use a given type that is not covered by the normal API entry points, you can wrap it 
+        // yourself inside a 1 line function which can take typed argument as value instead of void*, and then pass their address 
+        // to the generic function. For example:
+        //   bool MySliderU64(const char *label, u64* value, u64 min = 0, u64 max = 0, const char* format = "%lld") 
+        //   { 
+        //      return SliderScalar(label, ImGuiDataType_U64, value, &min, &max, format); 
+        //   }
+
+        // Limits (as helper variables that we can take the address of)
+        // Note that the SliderScalar function has a maximum usable range of half the natural type maximum, hence the /2 below.
+        #ifndef LLONG_MIN
+        ImS64 LLONG_MIN = -9223372036854775807LL - 1;
+        ImS64 LLONG_MAX = 9223372036854775807LL;
+        ImU64 ULLONG_MAX = (2ULL * 9223372036854775807LL + 1);
+        #endif
+        const ImS32   s32_zero = 0,   s32_one = 1,   s32_fifty = 50, s32_min = INT_MIN/2,   s32_max = INT_MAX/2,    s32_hi_a = INT_MAX/2 - 100,    s32_hi_b = INT_MAX/2;
+        const ImU32   u32_zero = 0,   u32_one = 1,   u32_fifty = 50, u32_min = 0,           u32_max = UINT_MAX/2,   u32_hi_a = UINT_MAX/2 - 100,   u32_hi_b = UINT_MAX/2;
+        const ImS64   s64_zero = 0,   s64_one = 1,   s64_fifty = 50, s64_min = LLONG_MIN/2, s64_max = LLONG_MAX/2,  s64_hi_a = LLONG_MAX/2 - 100,  s64_hi_b = LLONG_MAX/2;
+        const ImU64   u64_zero = 0,   u64_one = 1,   u64_fifty = 50, u64_min = 0,           u64_max = ULLONG_MAX/2, u64_hi_a = ULLONG_MAX/2 - 100, u64_hi_b = ULLONG_MAX/2;
+        const float   f32_zero = 0.f, f32_one = 1.f, f32_lo_a = -10000000000.0f, f32_hi_a = +10000000000.0f;
+        const double  f64_zero = 0.,  f64_one = 1.,  f64_lo_a = -1000000000000000.0, f64_hi_a = +1000000000000000.0;
+
+        // State
+        static ImS32  s32_v = -1;
+        static ImU32  u32_v = (ImU32)-1;
+        static ImS64  s64_v = -1;
+        static ImU64  u64_v = (ImU64)-1;
+        static float  f32_v = 0.123f;
+        static double f64_v = 90000.01234567890123456789;
+
+        const float drag_speed = 0.2f;
+        static bool drag_clamp = false;
+        ImGui::Text("Drags:");
+        ImGui::Checkbox("Clamp integers to 0..50", &drag_clamp); ImGui::SameLine(); ShowHelpMarker("As with every widgets in dear imgui, we never modify values unless there is a user interaction.\nYou can override the clamping limits by using CTRL+Click to input a value.");
+        ImGui::DragScalar("drag s32",       ImGuiDataType_S32,    &s32_v, drag_speed, drag_clamp ? &s32_zero : NULL, drag_clamp ? &s32_fifty : NULL);
+        ImGui::DragScalar("drag u32",       ImGuiDataType_U32,    &u32_v, drag_speed, drag_clamp ? &u32_zero : NULL, drag_clamp ? &u32_fifty : NULL, "%u ms");
+        ImGui::DragScalar("drag s64",       ImGuiDataType_S64,    &s64_v, drag_speed, drag_clamp ? &s64_zero : NULL, drag_clamp ? &s64_fifty : NULL);
+        ImGui::DragScalar("drag u64",       ImGuiDataType_U64,    &u64_v, drag_speed, drag_clamp ? &u64_zero : NULL, drag_clamp ? &u64_fifty : NULL);
+        ImGui::DragScalar("drag float",     ImGuiDataType_Float,  &f32_v, 0.005f,  &f32_zero, &f32_one, "%f", 1.0f);
+        ImGui::DragScalar("drag float ^2",  ImGuiDataType_Float,  &f32_v, 0.005f,  &f32_zero, &f32_one, "%f", 2.0f); ImGui::SameLine(); ShowHelpMarker("You can use the 'power' parameter to increase tweaking precision on one side of the range.");
+        ImGui::DragScalar("drag double",    ImGuiDataType_Double, &f64_v, 0.0005f, &f64_zero, NULL,     "%.10f grams", 1.0f);
+        ImGui::DragScalar("drag double ^2", ImGuiDataType_Double, &f64_v, 0.0005f, &f64_zero, &f64_one, "0 < %.10f < 1", 2.0f);
+
+        ImGui::Text("Sliders");
+        ImGui::SliderScalar("slider s32 low",     ImGuiDataType_S32,    &s32_v, &s32_zero, &s32_fifty,"%d");
+        ImGui::SliderScalar("slider s32 high",    ImGuiDataType_S32,    &s32_v, &s32_hi_a, &s32_hi_b, "%d");
+        ImGui::SliderScalar("slider s32 full",    ImGuiDataType_S32,    &s32_v, &s32_min,  &s32_max,  "%d");
+        ImGui::SliderScalar("slider u32 low",     ImGuiDataType_U32,    &u32_v, &u32_zero, &u32_fifty,"%u");
+        ImGui::SliderScalar("slider u32 high",    ImGuiDataType_U32,    &u32_v, &u32_hi_a, &u32_hi_b, "%u");
+        ImGui::SliderScalar("slider u32 full",    ImGuiDataType_U32,    &u32_v, &u32_min,  &u32_max,  "%u");
+        ImGui::SliderScalar("slider s64 low",     ImGuiDataType_S64,    &s64_v, &s64_zero, &s64_fifty,"%I64d");
+        ImGui::SliderScalar("slider s64 high",    ImGuiDataType_S64,    &s64_v, &s64_hi_a, &s64_hi_b, "%I64d");
+        ImGui::SliderScalar("slider s64 full",    ImGuiDataType_S64,    &s64_v, &s64_min,  &s64_max,  "%I64d");
+        ImGui::SliderScalar("slider u64 low",     ImGuiDataType_U64,    &u64_v, &u64_zero, &u64_fifty,"%I64u ms");
+        ImGui::SliderScalar("slider u64 high",    ImGuiDataType_U64,    &u64_v, &u64_hi_a, &u64_hi_b, "%I64u ms");
+        ImGui::SliderScalar("slider u64 full",    ImGuiDataType_U64,    &u64_v, &u64_min,  &u64_max,  "%I64u ms");
+        ImGui::SliderScalar("slider float low",   ImGuiDataType_Float,  &f32_v, &f32_zero, &f32_one);
+        ImGui::SliderScalar("slider float low^2", ImGuiDataType_Float,  &f32_v, &f32_zero, &f32_one,  "%.10f", 2.0f);
+        ImGui::SliderScalar("slider float high",  ImGuiDataType_Float,  &f32_v, &f32_lo_a, &f32_hi_a, "%e");
+        ImGui::SliderScalar("slider double low",  ImGuiDataType_Double, &f64_v, &f64_zero, &f64_one,  "%.10f grams", 1.0f);
+        ImGui::SliderScalar("slider double low^2",ImGuiDataType_Double, &f64_v, &f64_zero, &f64_one,  "%.10f", 2.0f);
+        ImGui::SliderScalar("slider double high", ImGuiDataType_Double, &f64_v, &f64_lo_a, &f64_hi_a, "%e grams", 1.0f);
+
+        static bool inputs_step = true;
+        ImGui::Text("Inputs");
+        ImGui::Checkbox("Show step buttons", &inputs_step);
+        ImGui::InputScalar("input s32",     ImGuiDataType_S32,    &s32_v, inputs_step ? &s32_one : NULL, NULL, "%d");
+        ImGui::InputScalar("input s32 hex", ImGuiDataType_S32,    &s32_v, inputs_step ? &s32_one : NULL, NULL, "%08X", ImGuiInputTextFlags_CharsHexadecimal);
+        ImGui::InputScalar("input u32",     ImGuiDataType_U32,    &u32_v, inputs_step ? &u32_one : NULL, NULL, "%u");
+        ImGui::InputScalar("input u32 hex", ImGuiDataType_U32,    &u32_v, inputs_step ? &u32_one : NULL, NULL, "%08X", ImGuiInputTextFlags_CharsHexadecimal);
+        ImGui::InputScalar("input s64",     ImGuiDataType_S64,    &s64_v, inputs_step ? &s64_one : NULL);
+        ImGui::InputScalar("input u64",     ImGuiDataType_U64,    &u64_v, inputs_step ? &u64_one : NULL);
+        ImGui::InputScalar("input float",   ImGuiDataType_Float,  &f32_v, inputs_step ? &f32_one : NULL);
+        ImGui::InputScalar("input double",  ImGuiDataType_Double, &f64_v, inputs_step ? &f64_one : NULL);
+
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Multi-component Widgets"))
+    {
+        static float vec4f[4] = { 0.10f, 0.20f, 0.30f, 0.44f };
+        static int vec4i[4] = { 1, 5, 100, 255 };
+
+        ImGui::InputFloat2("input float2", vec4f);
+        ImGui::DragFloat2("drag float2", vec4f, 0.01f, 0.0f, 1.0f);
+        ImGui::SliderFloat2("slider float2", vec4f, 0.0f, 1.0f);
+        ImGui::InputInt2("input int2", vec4i);
+        ImGui::DragInt2("drag int2", vec4i, 1, 0, 255);
+        ImGui::SliderInt2("slider int2", vec4i, 0, 255);
+        ImGui::Spacing();
+
+        ImGui::InputFloat3("input float3", vec4f);
+        ImGui::DragFloat3("drag float3", vec4f, 0.01f, 0.0f, 1.0f);
+        ImGui::SliderFloat3("slider float3", vec4f, 0.0f, 1.0f);
+        ImGui::InputInt3("input int3", vec4i);
+        ImGui::DragInt3("drag int3", vec4i, 1, 0, 255);
+        ImGui::SliderInt3("slider int3", vec4i, 0, 255);
+        ImGui::Spacing();
+
+        ImGui::InputFloat4("input float4", vec4f);
+        ImGui::DragFloat4("drag float4", vec4f, 0.01f, 0.0f, 1.0f);
+        ImGui::SliderFloat4("slider float4", vec4f, 0.0f, 1.0f);
+        ImGui::InputInt4("input int4", vec4i);
+        ImGui::DragInt4("drag int4", vec4i, 1, 0, 255);
+        ImGui::SliderInt4("slider int4", vec4i, 0, 255);
+
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Vertical Sliders"))
+    {
+        const float spacing = 4;
+        ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(spacing, spacing));
+
+        static int int_value = 0;
+        ImGui::VSliderInt("##int", ImVec2(18,160), &int_value, 0, 5);
+        ImGui::SameLine();
+
+        static float values[7] = { 0.0f, 0.60f, 0.35f, 0.9f, 0.70f, 0.20f, 0.0f };
+        ImGui::PushID("set1");
+        for (int i = 0; i < 7; i++)
+        {
+            if (i > 0) ImGui::SameLine();
+            ImGui::PushID(i);
+            ImGui::PushStyleColor(ImGuiCol_FrameBg, (ImVec4)ImColor::HSV(i/7.0f, 0.5f, 0.5f));
+            ImGui::PushStyleColor(ImGuiCol_FrameBgHovered, (ImVec4)ImColor::HSV(i/7.0f, 0.6f, 0.5f));
+            ImGui::PushStyleColor(ImGuiCol_FrameBgActive, (ImVec4)ImColor::HSV(i/7.0f, 0.7f, 0.5f));
+            ImGui::PushStyleColor(ImGuiCol_SliderGrab, (ImVec4)ImColor::HSV(i/7.0f, 0.9f, 0.9f));
+            ImGui::VSliderFloat("##v", ImVec2(18,160), &values[i], 0.0f, 1.0f, "");
+            if (ImGui::IsItemActive() || ImGui::IsItemHovered())
+                ImGui::SetTooltip("%.3f", values[i]);
+            ImGui::PopStyleColor(4);
+            ImGui::PopID();
+        }
+        ImGui::PopID();
+
+        ImGui::SameLine();
+        ImGui::PushID("set2");
+        static float values2[4] = { 0.20f, 0.80f, 0.40f, 0.25f };
+        const int rows = 3;
+        const ImVec2 small_slider_size(18, (160.0f-(rows-1)*spacing)/rows);
+        for (int nx = 0; nx < 4; nx++)
+        {
+            if (nx > 0) ImGui::SameLine();
+            ImGui::BeginGroup();
+            for (int ny = 0; ny < rows; ny++)
+            {
+                ImGui::PushID(nx*rows+ny);
+                ImGui::VSliderFloat("##v", small_slider_size, &values2[nx], 0.0f, 1.0f, "");
+                if (ImGui::IsItemActive() || ImGui::IsItemHovered())
+                    ImGui::SetTooltip("%.3f", values2[nx]);
+                ImGui::PopID();
+            }
+            ImGui::EndGroup();
+        }
+        ImGui::PopID();
+
+        ImGui::SameLine();
+        ImGui::PushID("set3");
+        for (int i = 0; i < 4; i++)
+        {
+            if (i > 0) ImGui::SameLine();
+            ImGui::PushID(i);
+            ImGui::PushStyleVar(ImGuiStyleVar_GrabMinSize, 40);
+            ImGui::VSliderFloat("##v", ImVec2(40,160), &values[i], 0.0f, 1.0f, "%.2f\nsec");
+            ImGui::PopStyleVar();
+            ImGui::PopID();
+        }
+        ImGui::PopID();
+        ImGui::PopStyleVar();
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Drag and Drop"))
+    {
+        {
+            // ColorEdit widgets automatically act as drag source and drag target.
+            // They are using standardized payload strings IMGUI_PAYLOAD_TYPE_COLOR_3F and IMGUI_PAYLOAD_TYPE_COLOR_4F to allow your own widgets
+            // to use colors in their drag and drop interaction. Also see the demo in Color Picker -> Palette demo.
+            ImGui::BulletText("Drag and drop in standard widgets");
+            ImGui::Indent();
+            static float col1[3] = { 1.0f,0.0f,0.2f };
+            static float col2[4] = { 0.4f,0.7f,0.0f,0.5f };
+            ImGui::ColorEdit3("color 1", col1);
+            ImGui::ColorEdit4("color 2", col2);
+            ImGui::Unindent();
         }
 
-        if (ImGui::TreeNode("Combo"))
         {
-            // Expose flags as checkbox for the demo
-            static ImGuiComboFlags flags = 0;
-            ImGui::CheckboxFlags("ImGuiComboFlags_PopupAlignLeft", (unsigned int*)&flags, ImGuiComboFlags_PopupAlignLeft);
-            if (ImGui::CheckboxFlags("ImGuiComboFlags_NoArrowButton", (unsigned int*)&flags, ImGuiComboFlags_NoArrowButton))
-                flags &= ~ImGuiComboFlags_NoPreview;     // Clear the other flag, as we cannot combine both
-            if (ImGui::CheckboxFlags("ImGuiComboFlags_NoPreview", (unsigned int*)&flags, ImGuiComboFlags_NoPreview))
-                flags &= ~ImGuiComboFlags_NoArrowButton; // Clear the other flag, as we cannot combine both
-
-            // General BeginCombo() API, you have full control over your selection data and display type.
-            // (your selection data could be an index, a pointer to the object, an id for the object, a flag stored in the object itself, etc.)
-            const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO" };
-            static const char* item_current = items[0];            // Here our selection is a single pointer stored outside the object.
-            if (ImGui::BeginCombo("combo 1", item_current, flags)) // The second parameter is the label previewed before opening the combo.
+            ImGui::BulletText("Drag and drop to copy/swap items");
+            ImGui::Indent();
+            enum Mode
             {
-                for (int n = 0; n < IM_ARRAYSIZE(items); n++)
-                {
-                    bool is_selected = (item_current == items[n]);
-                    if (ImGui::Selectable(items[n], is_selected))
-                        item_current = items[n];
-                    if (is_selected)
-                        ImGui::SetItemDefaultFocus();   // Set the initial focus when opening the combo (scrolling + for keyboard navigation support in the upcoming navigation branch)
-                }
-                ImGui::EndCombo();
-            }
-
-            // Simplified one-liner Combo() API, using values packed in a single constant string
-            static int item_current_2 = 0;
-            ImGui::Combo("combo 2 (one-liner)", &item_current_2, "aaaa\0bbbb\0cccc\0dddd\0eeee\0\0");
-
-            // Simplified one-liner Combo() using an array of const char*
-            static int item_current_3 = -1; // If the selection isn't within 0..count, Combo won't display a preview
-            ImGui::Combo("combo 3 (array)", &item_current_3, items, IM_ARRAYSIZE(items));
-
-            // Simplified one-liner Combo() using an accessor function
-            struct FuncHolder { static bool ItemGetter(void* data, int idx, const char** out_str) { *out_str = ((const char**)data)[idx]; return true; } };
-            static int item_current_4 = 0;
-            ImGui::Combo("combo 4 (function)", &item_current_4, &FuncHolder::ItemGetter, items, IM_ARRAYSIZE(items));
-
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Selectables"))
-        {
-            // Selectable() has 2 overloads:
-            // - The one taking "bool selected" as a read-only selection information. When Selectable() has been clicked is returns true and you can alter selection state accordingly.
-            // - The one taking "bool* p_selected" as a read-write selection information (convenient in some cases)
-            // The earlier is more flexible, as in real application your selection may be stored in a different manner (in flags within objects, as an external list, etc).
-            if (ImGui::TreeNode("Basic"))
-            {
-                static bool selection[5] = { false, true, false, false, false };
-                ImGui::Selectable("1. I am selectable", &selection[0]);
-                ImGui::Selectable("2. I am selectable", &selection[1]);
-                ImGui::Text("3. I am not selectable");
-                ImGui::Selectable("4. I am selectable", &selection[3]);
-                if (ImGui::Selectable("5. I am double clickable", selection[4], ImGuiSelectableFlags_AllowDoubleClick))
-                    if (ImGui::IsMouseDoubleClicked(0))
-                        selection[4] = !selection[4];
-                ImGui::TreePop();
-            }
-            if (ImGui::TreeNode("Selection State: Single Selection"))
-            {
-                static int selected = -1;
-                for (int n = 0; n < 5; n++)
-                {
-                    char buf[32];
-                    sprintf(buf, "Object %d", n);
-                    if (ImGui::Selectable(buf, selected == n))
-                        selected = n;
-                }
-                ImGui::TreePop();
-            }
-            if (ImGui::TreeNode("Selection State: Multiple Selection"))
-            {
-                ShowHelpMarker("Hold CTRL and click to select multiple items.");
-                static bool selection[5] = { false, false, false, false, false };
-                for (int n = 0; n < 5; n++)
-                {
-                    char buf[32];
-                    sprintf(buf, "Object %d", n);
-                    if (ImGui::Selectable(buf, selection[n]))
-                    {
-                        if (!ImGui::GetIO().KeyCtrl)    // Clear selection when CTRL is not held
-                            memset(selection, 0, sizeof(selection));
-                        selection[n] ^= 1;
-                    }
-                }
-                ImGui::TreePop();
-            }
-            if (ImGui::TreeNode("Rendering more text into the same line"))
-            {
-                // Using the Selectable() override that takes "bool* p_selected" parameter and toggle your booleans automatically.
-                static bool selected[3] = { false, false, false };
-                ImGui::Selectable("main.c",    &selected[0]); ImGui::SameLine(300); ImGui::Text(" 2,345 bytes");
-                ImGui::Selectable("Hello.cpp", &selected[1]); ImGui::SameLine(300); ImGui::Text("12,345 bytes");
-                ImGui::Selectable("Hello.h",   &selected[2]); ImGui::SameLine(300); ImGui::Text(" 2,345 bytes");
-                ImGui::TreePop();
-            }
-            if (ImGui::TreeNode("In columns"))
-            {
-                ImGui::Columns(3, NULL, false);
-                static bool selected[16] = { 0 };
-                for (int i = 0; i < 16; i++)
-                {
-                    char label[32]; sprintf(label, "Item %d", i);
-                    if (ImGui::Selectable(label, &selected[i])) {}
-                    ImGui::NextColumn();
-                }
-                ImGui::Columns(1);
-                ImGui::TreePop();
-            }
-            if (ImGui::TreeNode("Grid"))
-            {
-                static bool selected[16] = { true, false, false, false, false, true, false, false, false, false, true, false, false, false, false, true };
-                for (int i = 0; i < 16; i++)
-                {
-                    ImGui::PushID(i);
-                    if (ImGui::Selectable("Sailor", &selected[i], 0, ImVec2(50,50)))
-                    {
-                        int x = i % 4, y = i / 4;
-                        if (x > 0) selected[i - 1] ^= 1;
-                        if (x < 3) selected[i + 1] ^= 1;
-                        if (y > 0) selected[i - 4] ^= 1;
-                        if (y < 3) selected[i + 4] ^= 1;
-                    }
-                    if ((i % 4) < 3) ImGui::SameLine();
-                    ImGui::PopID();
-                }
-                ImGui::TreePop();
-            }
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Filtered Text Input"))
-        {
-            static char buf1[64] = ""; ImGui::InputText("default", buf1, 64);
-            static char buf2[64] = ""; ImGui::InputText("decimal", buf2, 64, ImGuiInputTextFlags_CharsDecimal);
-            static char buf3[64] = ""; ImGui::InputText("hexadecimal", buf3, 64, ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase);
-            static char buf4[64] = ""; ImGui::InputText("uppercase", buf4, 64, ImGuiInputTextFlags_CharsUppercase);
-            static char buf5[64] = ""; ImGui::InputText("no blank", buf5, 64, ImGuiInputTextFlags_CharsNoBlank);
-            struct TextFilters { static int FilterImGuiLetters(ImGuiInputTextCallbackData* data) { if (data->EventChar < 256 && strchr("imgui", (char)data->EventChar)) return 0; return 1; } };
-            static char buf6[64] = ""; ImGui::InputText("\"imgui\" letters", buf6, 64, ImGuiInputTextFlags_CallbackCharFilter, TextFilters::FilterImGuiLetters);
-
-            ImGui::Text("Password input");
-            static char bufpass[64] = "password123";
-            ImGui::InputText("password", bufpass, 64, ImGuiInputTextFlags_Password | ImGuiInputTextFlags_CharsNoBlank);
-            ImGui::SameLine(); ShowHelpMarker("Display all characters as '*'.\nDisable clipboard cut and copy.\nDisable logging.\n");
-            ImGui::InputText("password (clear)", bufpass, 64, ImGuiInputTextFlags_CharsNoBlank);
-
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Multi-line Text Input"))
-        {
-            static bool read_only = false;
-            static char text[1024*16] =
-                "/*\n"
-                " The Pentium F00F bug, shorthand for F0 0F C7 C8,\n"
-                " the hexadecimal encoding of one offending instruction,\n"
-                " more formally, the invalid operand with locked CMPXCHG8B\n"
-                " instruction bug, is a design flaw in the majority of\n"
-                " Intel Pentium, Pentium MMX, and Pentium OverDrive\n"
-                " processors (all in the P5 microarchitecture).\n"
-                "*/\n\n"
-                "label:\n"
-                "\tlock cmpxchg8b eax\n";
-
-            ShowHelpMarker("You can use the ImGuiInputTextFlags_CallbackResize facility if you need to wire InputTextMultiline() to a dynamic string type. See misc/cpp/imgui_stdlib.h for an example. (This is not demonstrated in imgui_demo.cpp)");
-            ImGui::Checkbox("Read-only", &read_only);
-            ImGuiInputTextFlags flags = ImGuiInputTextFlags_AllowTabInput | (read_only ? ImGuiInputTextFlags_ReadOnly : 0);
-            ImGui::InputTextMultiline("##source", text, IM_ARRAYSIZE(text), ImVec2(-1.0f, ImGui::GetTextLineHeight() * 16), flags);
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Plots Widgets"))
-        {
-            static bool animate = true;
-            ImGui::Checkbox("Animate", &animate);
-
-            static float arr[] = { 0.6f, 0.1f, 1.0f, 0.5f, 0.92f, 0.1f, 0.2f };
-            ImGui::PlotLines("Frame Times", arr, IM_ARRAYSIZE(arr));
-
-            // Create a dummy array of contiguous float values to plot
-            // Tip: If your float aren't contiguous but part of a structure, you can pass a pointer to your first float and the sizeof() of your structure in the Stride parameter.
-            static float values[90] = { 0 };
-            static int values_offset = 0;
-            static double refresh_time = 0.0;
-            if (!animate || refresh_time == 0.0f)
-                refresh_time = ImGui::GetTime();
-            while (refresh_time < ImGui::GetTime()) // Create dummy data at fixed 60 hz rate for the demo
-            {
-                static float phase = 0.0f;
-                values[values_offset] = cosf(phase);
-                values_offset = (values_offset+1) % IM_ARRAYSIZE(values);
-                phase += 0.10f*values_offset;
-                refresh_time += 1.0f/60.0f;
-            }
-            ImGui::PlotLines("Lines", values, IM_ARRAYSIZE(values), values_offset, "avg 0.0", -1.0f, 1.0f, ImVec2(0,80));
-            ImGui::PlotHistogram("Histogram", arr, IM_ARRAYSIZE(arr), 0, NULL, 0.0f, 1.0f, ImVec2(0,80));
-
-            // Use functions to generate output
-            // FIXME: This is rather awkward because current plot API only pass in indices. We probably want an API passing floats and user provide sample rate/count.
-            struct Funcs
-            {
-                static float Sin(void*, int i) { return sinf(i * 0.1f); }
-                static float Saw(void*, int i) { return (i & 1) ? 1.0f : -1.0f; }
+                Mode_Copy,
+                Mode_Move,
+                Mode_Swap
             };
-            static int func_type = 0, display_count = 70;
-            ImGui::Separator();
-            ImGui::PushItemWidth(100); ImGui::Combo("func", &func_type, "Sin\0Saw\0"); ImGui::PopItemWidth();
-            ImGui::SameLine();
-            ImGui::SliderInt("Sample count", &display_count, 1, 400);
-            float (*func)(void*, int) = (func_type == 0) ? Funcs::Sin : Funcs::Saw;
-            ImGui::PlotLines("Lines", func, NULL, display_count, 0, NULL, -1.0f, 1.0f, ImVec2(0,80));
-            ImGui::PlotHistogram("Histogram", func, NULL, display_count, 0, NULL, -1.0f, 1.0f, ImVec2(0,80));
-            ImGui::Separator();
-
-            // Animate a simple progress bar
-            static float progress = 0.0f, progress_dir = 1.0f;
-            if (animate)
+            static int mode = 0;
+            if (ImGui::RadioButton("Copy", mode == Mode_Copy)) { mode = Mode_Copy; } ImGui::SameLine();
+            if (ImGui::RadioButton("Move", mode == Mode_Move)) { mode = Mode_Move; } ImGui::SameLine();
+            if (ImGui::RadioButton("Swap", mode == Mode_Swap)) { mode = Mode_Swap; } 
+            static const char* names[9] = { "Bobby", "Beatrice", "Betty", "Brianna", "Barry", "Bernard", "Bibi", "Blaine", "Bryn" };
+            for (int n = 0; n < IM_ARRAYSIZE(names); n++)
             {
-                progress += progress_dir * 0.4f * ImGui::GetIO().DeltaTime;
-                if (progress >= +1.1f) { progress = +1.1f; progress_dir *= -1.0f; }
-                if (progress <= -0.1f) { progress = -0.1f; progress_dir *= -1.0f; }
+                ImGui::PushID(n);
+                if ((n % 3) != 0)
+                    ImGui::SameLine();
+                ImGui::Button(names[n], ImVec2(60,60));
+
+                // Our buttons are both drag sources and drag targets here!
+                if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None))
+                {
+                    ImGui::SetDragDropPayload("DND_DEMO_CELL", &n, sizeof(int));        // Set payload to carry the index of our item (could be anything)
+                    if (mode == Mode_Copy) { ImGui::Text("Copy %s", names[n]); }        // Display preview (could be anything, e.g. when dragging an image we could decide to display the filename and a small preview of the image, etc.)
+                    if (mode == Mode_Move) { ImGui::Text("Move %s", names[n]); }
+                    if (mode == Mode_Swap) { ImGui::Text("Swap %s", names[n]); }
+                    ImGui::EndDragDropSource();
+                }
+                if (ImGui::BeginDragDropTarget())
+                {
+                    if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("DND_DEMO_CELL"))
+                    {
+                        IM_ASSERT(payload->DataSize == sizeof(int));
+                        int payload_n = *(const int*)payload->Data;
+                        if (mode == Mode_Copy)
+                        {
+                            names[n] = names[payload_n];
+                        }
+                        if (mode == Mode_Move)
+                        {
+                            names[n] = names[payload_n];
+                            names[payload_n] = "";
+                        }
+                        if (mode == Mode_Swap)
+                        {
+                            const char* tmp = names[n];
+                            names[n] = names[payload_n];
+                            names[payload_n] = tmp;
+                        }
+                    }
+                    ImGui::EndDragDropTarget();
+                }
+                ImGui::PopID();
             }
-
-            // Typically we would use ImVec2(-1.0f,0.0f) to use all available width, or ImVec2(width,0.0f) for a specified width. ImVec2(0.0f,0.0f) uses ItemWidth.
-            ImGui::ProgressBar(progress, ImVec2(0.0f,0.0f));
-            ImGui::SameLine(0.0f, ImGui::GetStyle().ItemInnerSpacing.x);
-            ImGui::Text("Progress Bar");
-
-            float progress_saturated = (progress < 0.0f) ? 0.0f : (progress > 1.0f) ? 1.0f : progress;
-            char buf[32];
-            sprintf(buf, "%d/%d", (int)(progress_saturated*1753), 1753);
-            ImGui::ProgressBar(progress, ImVec2(0.f,0.f), buf);
-            ImGui::TreePop();
+            ImGui::Unindent();
         }
 
-        if (ImGui::TreeNode("Color/Picker Widgets"))
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Querying Status (Active/Focused/Hovered etc.)"))
+    {
+        // Display the value of IsItemHovered() and other common item state functions. Note that the flags can be combined.
+        // (because BulletText is an item itself and that would affect the output of IsItemHovered() we pass all state in a single call to simplify the code).
+        static int item_type = 1;
+        static bool b = false;
+        static float col4f[4] = { 1.0f, 0.5, 0.0f, 1.0f };
+        ImGui::RadioButton("Text", &item_type, 0);
+        ImGui::RadioButton("Button", &item_type, 1);
+        ImGui::RadioButton("CheckBox", &item_type, 2);
+        ImGui::RadioButton("SliderFloat", &item_type, 3);
+        ImGui::RadioButton("ColorEdit4", &item_type, 4);
+        ImGui::RadioButton("ListBox", &item_type, 5);
+        ImGui::Separator();
+        bool ret = false;
+        if (item_type == 0) { ImGui::Text("ITEM: Text"); }                                              // Testing text items with no identifier/interaction
+        if (item_type == 1) { ret = ImGui::Button("ITEM: Button"); }                                    // Testing button
+        if (item_type == 2) { ret = ImGui::Checkbox("ITEM: CheckBox", &b); }                            // Testing checkbox
+        if (item_type == 3) { ret = ImGui::SliderFloat("ITEM: SliderFloat", &col4f[0], 0.0f, 1.0f); }   // Testing basic item
+        if (item_type == 4) { ret = ImGui::ColorEdit4("ITEM: ColorEdit4", col4f); }                     // Testing multi-component items (IsItemXXX flags are reported merged)
+        if (item_type == 5) { const char* items[] = { "Apple", "Banana", "Cherry", "Kiwi" }; static int current = 1; ret = ImGui::ListBox("ITEM: ListBox", &current, items, IM_ARRAYSIZE(items), IM_ARRAYSIZE(items)); }
+        ImGui::BulletText(
+            "Return value = %d\n"
+            "IsItemFocused() = %d\n"
+            "IsItemHovered() = %d\n"
+            "IsItemHovered(_AllowWhenBlockedByPopup) = %d\n"
+            "IsItemHovered(_AllowWhenBlockedByActiveItem) = %d\n"
+            "IsItemHovered(_AllowWhenOverlapped) = %d\n"
+            "IsItemHovered(_RectOnly) = %d\n"
+            "IsItemActive() = %d\n"
+            "IsItemEdited() = %d\n"
+            "IsItemDeactivated() = %d\n"
+            "IsItemDeactivatedEdit() = %d\n"
+            "IsItemVisible() = %d\n"
+            "GetItemRectMin() = (%.1f, %.1f)\n"
+            "GetItemRectMax() = (%.1f, %.1f)\n"
+            "GetItemRectSize() = (%.1f, %.1f)",
+            ret,
+            ImGui::IsItemFocused(),
+            ImGui::IsItemHovered(),
+            ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup),
+            ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem),
+            ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenOverlapped),
+            ImGui::IsItemHovered(ImGuiHoveredFlags_RectOnly),
+            ImGui::IsItemActive(),
+            ImGui::IsItemEdited(),
+            ImGui::IsItemDeactivated(),
+            ImGui::IsItemDeactivatedAfterEdit(),
+            ImGui::IsItemVisible(),
+            ImGui::GetItemRectMin().x, ImGui::GetItemRectMin().y,
+            ImGui::GetItemRectMax().x, ImGui::GetItemRectMax().y,
+            ImGui::GetItemRectSize().x, ImGui::GetItemRectSize().y
+        );
+
+        static bool embed_all_inside_a_child_window = false;
+        ImGui::Checkbox("Embed everything inside a child window (for additional testing)", &embed_all_inside_a_child_window);
+        if (embed_all_inside_a_child_window)
+            ImGui::BeginChild("outer_child", ImVec2(0, ImGui::GetFontSize() * 20), true);
+
+        // Testing IsWindowFocused() function with its various flags. Note that the flags can be combined.
+        ImGui::BulletText(
+            "IsWindowFocused() = %d\n"
+            "IsWindowFocused(_ChildWindows) = %d\n"
+            "IsWindowFocused(_ChildWindows|_RootWindow) = %d\n"
+            "IsWindowFocused(_RootWindow) = %d\n"
+            "IsWindowFocused(_AnyWindow) = %d\n",
+            ImGui::IsWindowFocused(),
+            ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows),
+            ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows | ImGuiFocusedFlags_RootWindow),
+            ImGui::IsWindowFocused(ImGuiFocusedFlags_RootWindow),
+            ImGui::IsWindowFocused(ImGuiFocusedFlags_AnyWindow));
+
+        // Testing IsWindowHovered() function with its various flags. Note that the flags can be combined.
+        ImGui::BulletText(
+            "IsWindowHovered() = %d\n"
+            "IsWindowHovered(_AllowWhenBlockedByPopup) = %d\n"
+            "IsWindowHovered(_AllowWhenBlockedByActiveItem) = %d\n"
+            "IsWindowHovered(_ChildWindows) = %d\n"
+            "IsWindowHovered(_ChildWindows|_RootWindow) = %d\n"
+            "IsWindowHovered(_RootWindow) = %d\n"
+            "IsWindowHovered(_AnyWindow) = %d\n",
+            ImGui::IsWindowHovered(),
+            ImGui::IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup),
+            ImGui::IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem),
+            ImGui::IsWindowHovered(ImGuiHoveredFlags_ChildWindows),
+            ImGui::IsWindowHovered(ImGuiHoveredFlags_ChildWindows | ImGuiHoveredFlags_RootWindow),
+            ImGui::IsWindowHovered(ImGuiHoveredFlags_RootWindow),
+            ImGui::IsWindowHovered(ImGuiHoveredFlags_AnyWindow));
+
+        ImGui::BeginChild("child", ImVec2(0, 50), true);
+        ImGui::Text("This is another child window for testing with the _ChildWindows flag.");
+        ImGui::EndChild();
+        if (embed_all_inside_a_child_window)
+            ImGui::EndChild();
+
+        // Calling IsItemHovered() after begin returns the hovered status of the title bar. 
+        // This is useful in particular if you want to create a context menu (with BeginPopupContextItem) associated to the title bar of a window.
+        static bool test_window = false;
+        ImGui::Checkbox("Hovered/Active tests after Begin() for title bar testing", &test_window);
+        if (test_window)
         {
-            static ImVec4 color = ImColor(114, 144, 154, 200);
-
-            static bool alpha_preview = true;
-            static bool alpha_half_preview = false;
-            static bool drag_and_drop = true;
-            static bool options_menu = true;
-            static bool hdr = false;
-            ImGui::Checkbox("With Alpha Preview", &alpha_preview);
-            ImGui::Checkbox("With Half Alpha Preview", &alpha_half_preview);
-            ImGui::Checkbox("With Drag and Drop", &drag_and_drop);
-            ImGui::Checkbox("With Options Menu", &options_menu); ImGui::SameLine(); ShowHelpMarker("Right-click on the individual color widget to show options.");
-            ImGui::Checkbox("With HDR", &hdr); ImGui::SameLine(); ShowHelpMarker("Currently all this does is to lift the 0..1 limits on dragging widgets.");
-            int misc_flags = (hdr ? ImGuiColorEditFlags_HDR : 0) | (drag_and_drop ? 0 : ImGuiColorEditFlags_NoDragDrop) | (alpha_half_preview ? ImGuiColorEditFlags_AlphaPreviewHalf : (alpha_preview ? ImGuiColorEditFlags_AlphaPreview : 0)) | (options_menu ? 0 : ImGuiColorEditFlags_NoOptions);
-
-            ImGui::Text("Color widget:");
-            ImGui::SameLine(); ShowHelpMarker("Click on the colored square to open a color picker.\nCTRL+click on individual component to input value.\n");
-            ImGui::ColorEdit3("MyColor##1", (float*)&color, misc_flags);
-
-            ImGui::Text("Color widget HSV with Alpha:");
-            ImGui::ColorEdit4("MyColor##2", (float*)&color, ImGuiColorEditFlags_HSV | misc_flags);
-
-            ImGui::Text("Color widget with Float Display:");
-            ImGui::ColorEdit4("MyColor##2f", (float*)&color, ImGuiColorEditFlags_Float | misc_flags);
-
-            ImGui::Text("Color button with Picker:");
-            ImGui::SameLine(); ShowHelpMarker("With the ImGuiColorEditFlags_NoInputs flag you can hide all the slider/text inputs.\nWith the ImGuiColorEditFlags_NoLabel flag you can pass a non-empty label which will only be used for the tooltip and picker popup.");
-            ImGui::ColorEdit4("MyColor##3", (float*)&color, ImGuiColorEditFlags_NoInputs | ImGuiColorEditFlags_NoLabel | misc_flags);
-
-            ImGui::Text("Color button with Custom Picker Popup:");
-
-            // Generate a dummy palette
-            static bool saved_palette_inited = false;
-            static ImVec4 saved_palette[32];
-            if (!saved_palette_inited)
-                for (int n = 0; n < IM_ARRAYSIZE(saved_palette); n++)
-                {
-                    ImGui::ColorConvertHSVtoRGB(n / 31.0f, 0.8f, 0.8f, saved_palette[n].x, saved_palette[n].y, saved_palette[n].z);
-                    saved_palette[n].w = 1.0f; // Alpha
-                }
-            saved_palette_inited = true;
-
-            static ImVec4 backup_color;
-            bool open_popup = ImGui::ColorButton("MyColor##3b", color, misc_flags);
-            ImGui::SameLine();
-            open_popup |= ImGui::Button("Palette");
-            if (open_popup)
+            ImGui::Begin("Title bar Hovered/Active tests", &test_window);
+            if (ImGui::BeginPopupContextItem()) // <-- This is using IsItemHovered()
             {
-                ImGui::OpenPopup("mypicker");
-                backup_color = color;
-            }
-            if (ImGui::BeginPopup("mypicker"))
-            {
-                // FIXME: Adding a drag and drop example here would be perfect!
-                ImGui::Text("MY CUSTOM COLOR PICKER WITH AN AMAZING PALETTE!");
-                ImGui::Separator();
-                ImGui::ColorPicker4("##picker", (float*)&color, misc_flags | ImGuiColorEditFlags_NoSidePreview | ImGuiColorEditFlags_NoSmallPreview);
-                ImGui::SameLine();
-                ImGui::BeginGroup();
-                ImGui::Text("Current");
-                ImGui::ColorButton("##current", color, ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_AlphaPreviewHalf, ImVec2(60,40));
-                ImGui::Text("Previous");
-                if (ImGui::ColorButton("##previous", backup_color, ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_AlphaPreviewHalf, ImVec2(60,40)))
-                    color = backup_color;
-                ImGui::Separator();
-                ImGui::Text("Palette");
-                for (int n = 0; n < IM_ARRAYSIZE(saved_palette); n++)
-                {
-                    ImGui::PushID(n);
-                    if ((n % 8) != 0)
-                        ImGui::SameLine(0.0f, ImGui::GetStyle().ItemSpacing.y);
-                    if (ImGui::ColorButton("##palette", saved_palette[n], ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_NoTooltip, ImVec2(20,20)))
-                        color = ImVec4(saved_palette[n].x, saved_palette[n].y, saved_palette[n].z, color.w); // Preserve alpha!
-
-                    if (ImGui::BeginDragDropTarget())
-                    {
-                        if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
-                            memcpy((float*)&saved_palette[n], payload->Data, sizeof(float) * 3);
-                        if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
-                            memcpy((float*)&saved_palette[n], payload->Data, sizeof(float) * 4);
-                        ImGui::EndDragDropTarget();
-                    }
-
-                    ImGui::PopID();
-                }
-                ImGui::EndGroup();
+                if (ImGui::MenuItem("Close")) { test_window = false; }
                 ImGui::EndPopup();
             }
-
-            ImGui::Text("Color button only:");
-            ImGui::ColorButton("MyColor##3c", *(ImVec4*)&color, misc_flags, ImVec2(80,80));
-
-            ImGui::Text("Color picker:");
-            static bool alpha = true;
-            static bool alpha_bar = true;
-            static bool side_preview = true;
-            static bool ref_color = false;
-            static ImVec4 ref_color_v(1.0f,0.0f,1.0f,0.5f);
-            static int inputs_mode = 2;
-            static int picker_mode = 0;
-            ImGui::Checkbox("With Alpha", &alpha);
-            ImGui::Checkbox("With Alpha Bar", &alpha_bar);
-            ImGui::Checkbox("With Side Preview", &side_preview);
-            if (side_preview)
-            {
-                ImGui::SameLine();
-                ImGui::Checkbox("With Ref Color", &ref_color);
-                if (ref_color)
-                {
-                    ImGui::SameLine();
-                    ImGui::ColorEdit4("##RefColor", &ref_color_v.x, ImGuiColorEditFlags_NoInputs | misc_flags);
-                }
-            }
-            ImGui::Combo("Inputs Mode", &inputs_mode, "All Inputs\0No Inputs\0RGB Input\0HSV Input\0HEX Input\0");
-            ImGui::Combo("Picker Mode", &picker_mode, "Auto/Current\0Hue bar + SV rect\0Hue wheel + SV triangle\0");
-            ImGui::SameLine(); ShowHelpMarker("User can right-click the picker to change mode.");
-            ImGuiColorEditFlags flags = misc_flags;
-            if (!alpha) flags |= ImGuiColorEditFlags_NoAlpha; // This is by default if you call ColorPicker3() instead of ColorPicker4()
-            if (alpha_bar) flags |= ImGuiColorEditFlags_AlphaBar;
-            if (!side_preview) flags |= ImGuiColorEditFlags_NoSidePreview;
-            if (picker_mode == 1) flags |= ImGuiColorEditFlags_PickerHueBar;
-            if (picker_mode == 2) flags |= ImGuiColorEditFlags_PickerHueWheel;
-            if (inputs_mode == 1) flags |= ImGuiColorEditFlags_NoInputs;
-            if (inputs_mode == 2) flags |= ImGuiColorEditFlags_RGB;
-            if (inputs_mode == 3) flags |= ImGuiColorEditFlags_HSV;
-            if (inputs_mode == 4) flags |= ImGuiColorEditFlags_HEX;
-            ImGui::ColorPicker4("MyColor##4", (float*)&color, flags, ref_color ? &ref_color_v.x : NULL);
-
-            ImGui::Text("Programmatically set defaults:");
-            ImGui::SameLine(); ShowHelpMarker("SetColorEditOptions() is designed to allow you to set boot-time default.\nWe don't have Push/Pop functions because you can force options on a per-widget basis if needed, and the user can change non-forced ones with the options menu.\nWe don't have a getter to avoid encouraging you to persistently save values that aren't forward-compatible.");
-            if (ImGui::Button("Default: Uint8 + HSV + Hue Bar"))
-                ImGui::SetColorEditOptions(ImGuiColorEditFlags_Uint8 | ImGuiColorEditFlags_HSV | ImGuiColorEditFlags_PickerHueBar);
-            if (ImGui::Button("Default: Float + HDR + Hue Wheel"))
-                ImGui::SetColorEditOptions(ImGuiColorEditFlags_Float | ImGuiColorEditFlags_HDR | ImGuiColorEditFlags_PickerHueWheel);
-
-            ImGui::TreePop();
+            ImGui::Text(
+                "IsItemHovered() after begin = %d (== is title bar hovered)\n"
+                "IsItemActive() after begin = %d (== is window being clicked/moved)\n",
+                ImGui::IsItemHovered(), ImGui::IsItemActive());
+            ImGui::End();
         }
 
-        if (ImGui::TreeNode("Range Widgets"))
-        {
-            static float begin = 10, end = 90;
-            static int begin_i = 100, end_i = 1000;
-            ImGui::DragFloatRange2("range", &begin, &end, 0.25f, 0.0f, 100.0f, "Min: %.1f %%", "Max: %.1f %%");
-            ImGui::DragIntRange2("range int (no bounds)", &begin_i, &end_i, 5, 0, 0, "Min: %d units", "Max: %d units");
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Data Types"))
-        {
-            // The DragScalar/InputScalar/SliderScalar functions allow various data types: signed/unsigned int/long long and float/double
-            // To avoid polluting the public API with all possible combinations, we use the ImGuiDataType enum to pass the type, 
-            // and passing all arguments by address. 
-            // This is the reason the test code below creates local variables to hold "zero" "one" etc. for each types.
-            // In practice, if you frequently use a given type that is not covered by the normal API entry points, you can wrap it 
-            // yourself inside a 1 line function which can take typed argument as value instead of void*, and then pass their address 
-            // to the generic function. For example:
-            //   bool MySliderU64(const char *label, u64* value, u64 min = 0, u64 max = 0, const char* format = "%lld") 
-            //   { 
-            //      return SliderScalar(label, ImGuiDataType_U64, value, &min, &max, format); 
-            //   }
-
-            // Limits (as helper variables that we can take the address of)
-            // Note that the SliderScalar function has a maximum usable range of half the natural type maximum, hence the /2 below.
-            #ifndef LLONG_MIN
-            ImS64 LLONG_MIN = -9223372036854775807LL - 1;
-            ImS64 LLONG_MAX = 9223372036854775807LL;
-            ImU64 ULLONG_MAX = (2ULL * 9223372036854775807LL + 1);
-            #endif
-            const ImS32   s32_zero = 0,   s32_one = 1,   s32_fifty = 50, s32_min = INT_MIN/2,   s32_max = INT_MAX/2,    s32_hi_a = INT_MAX/2 - 100,    s32_hi_b = INT_MAX/2;
-            const ImU32   u32_zero = 0,   u32_one = 1,   u32_fifty = 50, u32_min = 0,           u32_max = UINT_MAX/2,   u32_hi_a = UINT_MAX/2 - 100,   u32_hi_b = UINT_MAX/2;
-            const ImS64   s64_zero = 0,   s64_one = 1,   s64_fifty = 50, s64_min = LLONG_MIN/2, s64_max = LLONG_MAX/2,  s64_hi_a = LLONG_MAX/2 - 100,  s64_hi_b = LLONG_MAX/2;
-            const ImU64   u64_zero = 0,   u64_one = 1,   u64_fifty = 50, u64_min = 0,           u64_max = ULLONG_MAX/2, u64_hi_a = ULLONG_MAX/2 - 100, u64_hi_b = ULLONG_MAX/2;
-            const float   f32_zero = 0.f, f32_one = 1.f, f32_lo_a = -10000000000.0f, f32_hi_a = +10000000000.0f;
-            const double  f64_zero = 0.,  f64_one = 1.,  f64_lo_a = -1000000000000000.0, f64_hi_a = +1000000000000000.0;
-
-            // State
-            static ImS32  s32_v = -1;
-            static ImU32  u32_v = (ImU32)-1;
-            static ImS64  s64_v = -1;
-            static ImU64  u64_v = (ImU64)-1;
-            static float  f32_v = 0.123f;
-            static double f64_v = 90000.01234567890123456789;
-
-            const float drag_speed = 0.2f;
-            static bool drag_clamp = false;
-            ImGui::Text("Drags:");
-            ImGui::Checkbox("Clamp integers to 0..50", &drag_clamp); ImGui::SameLine(); ShowHelpMarker("As with every widgets in dear imgui, we never modify values unless there is a user interaction.\nYou can override the clamping limits by using CTRL+Click to input a value.");
-            ImGui::DragScalar("drag s32",       ImGuiDataType_S32,    &s32_v, drag_speed, drag_clamp ? &s32_zero : NULL, drag_clamp ? &s32_fifty : NULL);
-            ImGui::DragScalar("drag u32",       ImGuiDataType_U32,    &u32_v, drag_speed, drag_clamp ? &u32_zero : NULL, drag_clamp ? &u32_fifty : NULL, "%u ms");
-            ImGui::DragScalar("drag s64",       ImGuiDataType_S64,    &s64_v, drag_speed, drag_clamp ? &s64_zero : NULL, drag_clamp ? &s64_fifty : NULL);
-            ImGui::DragScalar("drag u64",       ImGuiDataType_U64,    &u64_v, drag_speed, drag_clamp ? &u64_zero : NULL, drag_clamp ? &u64_fifty : NULL);
-            ImGui::DragScalar("drag float",     ImGuiDataType_Float,  &f32_v, 0.005f,  &f32_zero, &f32_one, "%f", 1.0f);
-            ImGui::DragScalar("drag float ^2",  ImGuiDataType_Float,  &f32_v, 0.005f,  &f32_zero, &f32_one, "%f", 2.0f); ImGui::SameLine(); ShowHelpMarker("You can use the 'power' parameter to increase tweaking precision on one side of the range.");
-            ImGui::DragScalar("drag double",    ImGuiDataType_Double, &f64_v, 0.0005f, &f64_zero, NULL,     "%.10f grams", 1.0f);
-            ImGui::DragScalar("drag double ^2", ImGuiDataType_Double, &f64_v, 0.0005f, &f64_zero, &f64_one, "0 < %.10f < 1", 2.0f);
-
-            ImGui::Text("Sliders");
-            ImGui::SliderScalar("slider s32 low",     ImGuiDataType_S32,    &s32_v, &s32_zero, &s32_fifty,"%d");
-            ImGui::SliderScalar("slider s32 high",    ImGuiDataType_S32,    &s32_v, &s32_hi_a, &s32_hi_b, "%d");
-            ImGui::SliderScalar("slider s32 full",    ImGuiDataType_S32,    &s32_v, &s32_min,  &s32_max,  "%d");
-            ImGui::SliderScalar("slider u32 low",     ImGuiDataType_U32,    &u32_v, &u32_zero, &u32_fifty,"%u");
-            ImGui::SliderScalar("slider u32 high",    ImGuiDataType_U32,    &u32_v, &u32_hi_a, &u32_hi_b, "%u");
-            ImGui::SliderScalar("slider u32 full",    ImGuiDataType_U32,    &u32_v, &u32_min,  &u32_max,  "%u");
-            ImGui::SliderScalar("slider s64 low",     ImGuiDataType_S64,    &s64_v, &s64_zero, &s64_fifty,"%I64d");
-            ImGui::SliderScalar("slider s64 high",    ImGuiDataType_S64,    &s64_v, &s64_hi_a, &s64_hi_b, "%I64d");
-            ImGui::SliderScalar("slider s64 full",    ImGuiDataType_S64,    &s64_v, &s64_min,  &s64_max,  "%I64d");
-            ImGui::SliderScalar("slider u64 low",     ImGuiDataType_U64,    &u64_v, &u64_zero, &u64_fifty,"%I64u ms");
-            ImGui::SliderScalar("slider u64 high",    ImGuiDataType_U64,    &u64_v, &u64_hi_a, &u64_hi_b, "%I64u ms");
-            ImGui::SliderScalar("slider u64 full",    ImGuiDataType_U64,    &u64_v, &u64_min,  &u64_max,  "%I64u ms");
-            ImGui::SliderScalar("slider float low",   ImGuiDataType_Float,  &f32_v, &f32_zero, &f32_one);
-            ImGui::SliderScalar("slider float low^2", ImGuiDataType_Float,  &f32_v, &f32_zero, &f32_one,  "%.10f", 2.0f);
-            ImGui::SliderScalar("slider float high",  ImGuiDataType_Float,  &f32_v, &f32_lo_a, &f32_hi_a, "%e");
-            ImGui::SliderScalar("slider double low",  ImGuiDataType_Double, &f64_v, &f64_zero, &f64_one,  "%.10f grams", 1.0f);
-            ImGui::SliderScalar("slider double low^2",ImGuiDataType_Double, &f64_v, &f64_zero, &f64_one,  "%.10f", 2.0f);
-            ImGui::SliderScalar("slider double high", ImGuiDataType_Double, &f64_v, &f64_lo_a, &f64_hi_a, "%e grams", 1.0f);
-
-            static bool inputs_step = true;
-            ImGui::Text("Inputs");
-            ImGui::Checkbox("Show step buttons", &inputs_step);
-            ImGui::InputScalar("input s32",     ImGuiDataType_S32,    &s32_v, inputs_step ? &s32_one : NULL, NULL, "%d");
-            ImGui::InputScalar("input s32 hex", ImGuiDataType_S32,    &s32_v, inputs_step ? &s32_one : NULL, NULL, "%08X", ImGuiInputTextFlags_CharsHexadecimal);
-            ImGui::InputScalar("input u32",     ImGuiDataType_U32,    &u32_v, inputs_step ? &u32_one : NULL, NULL, "%u");
-            ImGui::InputScalar("input u32 hex", ImGuiDataType_U32,    &u32_v, inputs_step ? &u32_one : NULL, NULL, "%08X", ImGuiInputTextFlags_CharsHexadecimal);
-            ImGui::InputScalar("input s64",     ImGuiDataType_S64,    &s64_v, inputs_step ? &s64_one : NULL);
-            ImGui::InputScalar("input u64",     ImGuiDataType_U64,    &u64_v, inputs_step ? &u64_one : NULL);
-            ImGui::InputScalar("input float",   ImGuiDataType_Float,  &f32_v, inputs_step ? &f32_one : NULL);
-            ImGui::InputScalar("input double",  ImGuiDataType_Double, &f64_v, inputs_step ? &f64_one : NULL);
-
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Multi-component Widgets"))
-        {
-            static float vec4f[4] = { 0.10f, 0.20f, 0.30f, 0.44f };
-            static int vec4i[4] = { 1, 5, 100, 255 };
-
-            ImGui::InputFloat2("input float2", vec4f);
-            ImGui::DragFloat2("drag float2", vec4f, 0.01f, 0.0f, 1.0f);
-            ImGui::SliderFloat2("slider float2", vec4f, 0.0f, 1.0f);
-            ImGui::InputInt2("input int2", vec4i);
-            ImGui::DragInt2("drag int2", vec4i, 1, 0, 255);
-            ImGui::SliderInt2("slider int2", vec4i, 0, 255);
-            ImGui::Spacing();
-
-            ImGui::InputFloat3("input float3", vec4f);
-            ImGui::DragFloat3("drag float3", vec4f, 0.01f, 0.0f, 1.0f);
-            ImGui::SliderFloat3("slider float3", vec4f, 0.0f, 1.0f);
-            ImGui::InputInt3("input int3", vec4i);
-            ImGui::DragInt3("drag int3", vec4i, 1, 0, 255);
-            ImGui::SliderInt3("slider int3", vec4i, 0, 255);
-            ImGui::Spacing();
-
-            ImGui::InputFloat4("input float4", vec4f);
-            ImGui::DragFloat4("drag float4", vec4f, 0.01f, 0.0f, 1.0f);
-            ImGui::SliderFloat4("slider float4", vec4f, 0.0f, 1.0f);
-            ImGui::InputInt4("input int4", vec4i);
-            ImGui::DragInt4("drag int4", vec4i, 1, 0, 255);
-            ImGui::SliderInt4("slider int4", vec4i, 0, 255);
-
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Vertical Sliders"))
-        {
-            const float spacing = 4;
-            ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(spacing, spacing));
-
-            static int int_value = 0;
-            ImGui::VSliderInt("##int", ImVec2(18,160), &int_value, 0, 5);
-            ImGui::SameLine();
-
-            static float values[7] = { 0.0f, 0.60f, 0.35f, 0.9f, 0.70f, 0.20f, 0.0f };
-            ImGui::PushID("set1");
-            for (int i = 0; i < 7; i++)
-            {
-                if (i > 0) ImGui::SameLine();
-                ImGui::PushID(i);
-                ImGui::PushStyleColor(ImGuiCol_FrameBg, (ImVec4)ImColor::HSV(i/7.0f, 0.5f, 0.5f));
-                ImGui::PushStyleColor(ImGuiCol_FrameBgHovered, (ImVec4)ImColor::HSV(i/7.0f, 0.6f, 0.5f));
-                ImGui::PushStyleColor(ImGuiCol_FrameBgActive, (ImVec4)ImColor::HSV(i/7.0f, 0.7f, 0.5f));
-                ImGui::PushStyleColor(ImGuiCol_SliderGrab, (ImVec4)ImColor::HSV(i/7.0f, 0.9f, 0.9f));
-                ImGui::VSliderFloat("##v", ImVec2(18,160), &values[i], 0.0f, 1.0f, "");
-                if (ImGui::IsItemActive() || ImGui::IsItemHovered())
-                    ImGui::SetTooltip("%.3f", values[i]);
-                ImGui::PopStyleColor(4);
-                ImGui::PopID();
-            }
-            ImGui::PopID();
-
-            ImGui::SameLine();
-            ImGui::PushID("set2");
-            static float values2[4] = { 0.20f, 0.80f, 0.40f, 0.25f };
-            const int rows = 3;
-            const ImVec2 small_slider_size(18, (160.0f-(rows-1)*spacing)/rows);
-            for (int nx = 0; nx < 4; nx++)
-            {
-                if (nx > 0) ImGui::SameLine();
-                ImGui::BeginGroup();
-                for (int ny = 0; ny < rows; ny++)
-                {
-                    ImGui::PushID(nx*rows+ny);
-                    ImGui::VSliderFloat("##v", small_slider_size, &values2[nx], 0.0f, 1.0f, "");
-                    if (ImGui::IsItemActive() || ImGui::IsItemHovered())
-                        ImGui::SetTooltip("%.3f", values2[nx]);
-                    ImGui::PopID();
-                }
-                ImGui::EndGroup();
-            }
-            ImGui::PopID();
-
-            ImGui::SameLine();
-            ImGui::PushID("set3");
-            for (int i = 0; i < 4; i++)
-            {
-                if (i > 0) ImGui::SameLine();
-                ImGui::PushID(i);
-                ImGui::PushStyleVar(ImGuiStyleVar_GrabMinSize, 40);
-                ImGui::VSliderFloat("##v", ImVec2(40,160), &values[i], 0.0f, 1.0f, "%.2f\nsec");
-                ImGui::PopStyleVar();
-                ImGui::PopID();
-            }
-            ImGui::PopID();
-            ImGui::PopStyleVar();
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Drag and Drop"))
-        {
-            {
-                // ColorEdit widgets automatically act as drag source and drag target.
-                // They are using standardized payload strings IMGUI_PAYLOAD_TYPE_COLOR_3F and IMGUI_PAYLOAD_TYPE_COLOR_4F to allow your own widgets
-                // to use colors in their drag and drop interaction. Also see the demo in Color Picker -> Palette demo.
-                ImGui::BulletText("Drag and drop in standard widgets");
-                ImGui::Indent();
-                static float col1[3] = { 1.0f,0.0f,0.2f };
-                static float col2[4] = { 0.4f,0.7f,0.0f,0.5f };
-                ImGui::ColorEdit3("color 1", col1);
-                ImGui::ColorEdit4("color 2", col2);
-                ImGui::Unindent();
-            }
-
-            {
-                ImGui::BulletText("Drag and drop to copy/swap items");
-                ImGui::Indent();
-                enum Mode
-                {
-                    Mode_Copy,
-                    Mode_Move,
-                    Mode_Swap
-                };
-                static int mode = 0;
-                if (ImGui::RadioButton("Copy", mode == Mode_Copy)) { mode = Mode_Copy; } ImGui::SameLine();
-                if (ImGui::RadioButton("Move", mode == Mode_Move)) { mode = Mode_Move; } ImGui::SameLine();
-                if (ImGui::RadioButton("Swap", mode == Mode_Swap)) { mode = Mode_Swap; } 
-                static const char* names[9] = { "Bobby", "Beatrice", "Betty", "Brianna", "Barry", "Bernard", "Bibi", "Blaine", "Bryn" };
-                for (int n = 0; n < IM_ARRAYSIZE(names); n++)
-                {
-                    ImGui::PushID(n);
-                    if ((n % 3) != 0)
-                        ImGui::SameLine();
-                    ImGui::Button(names[n], ImVec2(60,60));
-
-                    // Our buttons are both drag sources and drag targets here!
-                    if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None))
-                    {
-                        ImGui::SetDragDropPayload("DND_DEMO_CELL", &n, sizeof(int));        // Set payload to carry the index of our item (could be anything)
-                        if (mode == Mode_Copy) { ImGui::Text("Copy %s", names[n]); }        // Display preview (could be anything, e.g. when dragging an image we could decide to display the filename and a small preview of the image, etc.)
-                        if (mode == Mode_Move) { ImGui::Text("Move %s", names[n]); }
-                        if (mode == Mode_Swap) { ImGui::Text("Swap %s", names[n]); }
-                        ImGui::EndDragDropSource();
-                    }
-                    if (ImGui::BeginDragDropTarget())
-                    {
-                        if (const ImGuiPayload* payload = ImGui::AcceptDragDropPayload("DND_DEMO_CELL"))
-                        {
-                            IM_ASSERT(payload->DataSize == sizeof(int));
-                            int payload_n = *(const int*)payload->Data;
-                            if (mode == Mode_Copy)
-                            {
-                                names[n] = names[payload_n];
-                            }
-                            if (mode == Mode_Move)
-                            {
-                                names[n] = names[payload_n];
-                                names[payload_n] = "";
-                            }
-                            if (mode == Mode_Swap)
-                            {
-                                const char* tmp = names[n];
-                                names[n] = names[payload_n];
-                                names[payload_n] = tmp;
-                            }
-                        }
-                        ImGui::EndDragDropTarget();
-                    }
-                    ImGui::PopID();
-                }
-                ImGui::Unindent();
-            }
-
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Querying Status (Active/Focused/Hovered etc.)"))
-        {
-            // Display the value of IsItemHovered() and other common item state functions. Note that the flags can be combined.
-            // (because BulletText is an item itself and that would affect the output of IsItemHovered() we pass all state in a single call to simplify the code).
-            static int item_type = 1;
-            static bool b = false;
-            static float col4f[4] = { 1.0f, 0.5, 0.0f, 1.0f };
-            ImGui::RadioButton("Text", &item_type, 0);
-            ImGui::RadioButton("Button", &item_type, 1);
-            ImGui::RadioButton("CheckBox", &item_type, 2);
-            ImGui::RadioButton("SliderFloat", &item_type, 3);
-            ImGui::RadioButton("ColorEdit4", &item_type, 4);
-            ImGui::RadioButton("ListBox", &item_type, 5);
-            ImGui::Separator();
-            bool ret = false;
-            if (item_type == 0) { ImGui::Text("ITEM: Text"); }                                              // Testing text items with no identifier/interaction
-            if (item_type == 1) { ret = ImGui::Button("ITEM: Button"); }                                    // Testing button
-            if (item_type == 2) { ret = ImGui::Checkbox("ITEM: CheckBox", &b); }                            // Testing checkbox
-            if (item_type == 3) { ret = ImGui::SliderFloat("ITEM: SliderFloat", &col4f[0], 0.0f, 1.0f); }   // Testing basic item
-            if (item_type == 4) { ret = ImGui::ColorEdit4("ITEM: ColorEdit4", col4f); }                     // Testing multi-component items (IsItemXXX flags are reported merged)
-            if (item_type == 5) { const char* items[] = { "Apple", "Banana", "Cherry", "Kiwi" }; static int current = 1; ret = ImGui::ListBox("ITEM: ListBox", &current, items, IM_ARRAYSIZE(items), IM_ARRAYSIZE(items)); }
-            ImGui::BulletText(
-                "Return value = %d\n"
-                "IsItemFocused() = %d\n"
-                "IsItemHovered() = %d\n"
-                "IsItemHovered(_AllowWhenBlockedByPopup) = %d\n"
-                "IsItemHovered(_AllowWhenBlockedByActiveItem) = %d\n"
-                "IsItemHovered(_AllowWhenOverlapped) = %d\n"
-                "IsItemHovered(_RectOnly) = %d\n"
-                "IsItemActive() = %d\n"
-                "IsItemEdited() = %d\n"
-                "IsItemDeactivated() = %d\n"
-                "IsItemDeactivatedEdit() = %d\n"
-                "IsItemVisible() = %d\n"
-                "GetItemRectMin() = (%.1f, %.1f)\n"
-                "GetItemRectMax() = (%.1f, %.1f)\n"
-                "GetItemRectSize() = (%.1f, %.1f)",
-                ret,
-                ImGui::IsItemFocused(),
-                ImGui::IsItemHovered(),
-                ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup),
-                ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem),
-                ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenOverlapped),
-                ImGui::IsItemHovered(ImGuiHoveredFlags_RectOnly),
-                ImGui::IsItemActive(),
-                ImGui::IsItemEdited(),
-                ImGui::IsItemDeactivated(),
-                ImGui::IsItemDeactivatedAfterEdit(),
-                ImGui::IsItemVisible(),
-                ImGui::GetItemRectMin().x, ImGui::GetItemRectMin().y,
-                ImGui::GetItemRectMax().x, ImGui::GetItemRectMax().y,
-                ImGui::GetItemRectSize().x, ImGui::GetItemRectSize().y
-            );
-
-            static bool embed_all_inside_a_child_window = false;
-            ImGui::Checkbox("Embed everything inside a child window (for additional testing)", &embed_all_inside_a_child_window);
-            if (embed_all_inside_a_child_window)
-                ImGui::BeginChild("outer_child", ImVec2(0, ImGui::GetFontSize() * 20), true);
-
-            // Testing IsWindowFocused() function with its various flags. Note that the flags can be combined.
-            ImGui::BulletText(
-                "IsWindowFocused() = %d\n"
-                "IsWindowFocused(_ChildWindows) = %d\n"
-                "IsWindowFocused(_ChildWindows|_RootWindow) = %d\n"
-                "IsWindowFocused(_RootWindow) = %d\n"
-                "IsWindowFocused(_AnyWindow) = %d\n",
-                ImGui::IsWindowFocused(),
-                ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows),
-                ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows | ImGuiFocusedFlags_RootWindow),
-                ImGui::IsWindowFocused(ImGuiFocusedFlags_RootWindow),
-                ImGui::IsWindowFocused(ImGuiFocusedFlags_AnyWindow));
-
-            // Testing IsWindowHovered() function with its various flags. Note that the flags can be combined.
-            ImGui::BulletText(
-                "IsWindowHovered() = %d\n"
-                "IsWindowHovered(_AllowWhenBlockedByPopup) = %d\n"
-                "IsWindowHovered(_AllowWhenBlockedByActiveItem) = %d\n"
-                "IsWindowHovered(_ChildWindows) = %d\n"
-                "IsWindowHovered(_ChildWindows|_RootWindow) = %d\n"
-                "IsWindowHovered(_RootWindow) = %d\n"
-                "IsWindowHovered(_AnyWindow) = %d\n",
-                ImGui::IsWindowHovered(),
-                ImGui::IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup),
-                ImGui::IsWindowHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem),
-                ImGui::IsWindowHovered(ImGuiHoveredFlags_ChildWindows),
-                ImGui::IsWindowHovered(ImGuiHoveredFlags_ChildWindows | ImGuiHoveredFlags_RootWindow),
-                ImGui::IsWindowHovered(ImGuiHoveredFlags_RootWindow),
-                ImGui::IsWindowHovered(ImGuiHoveredFlags_AnyWindow));
-
-            ImGui::BeginChild("child", ImVec2(0, 50), true);
-            ImGui::Text("This is another child window for testing with the _ChildWindows flag.");
-            ImGui::EndChild();
-            if (embed_all_inside_a_child_window)
-                ImGui::EndChild();
-
-            // Calling IsItemHovered() after begin returns the hovered status of the title bar. 
-            // This is useful in particular if you want to create a context menu (with BeginPopupContextItem) associated to the title bar of a window.
-            static bool test_window = false;
-            ImGui::Checkbox("Hovered/Active tests after Begin() for title bar testing", &test_window);
-            if (test_window)
-            {
-                ImGui::Begin("Title bar Hovered/Active tests", &test_window);
-                if (ImGui::BeginPopupContextItem()) // <-- This is using IsItemHovered()
-                {
-                    if (ImGui::MenuItem("Close")) { test_window = false; }
-                    ImGui::EndPopup();
-                }
-                ImGui::Text(
-                    "IsItemHovered() after begin = %d (== is title bar hovered)\n"
-                    "IsItemActive() after begin = %d (== is window being clicked/moved)\n",
-                    ImGui::IsItemHovered(), ImGui::IsItemActive());
-                ImGui::End();
-            }
-
-            ImGui::TreePop();
-        }
+        ImGui::TreePop();
     }
 }
 
 static void ShowDemoWindowLayout()
 {
-    if (ImGui::CollapsingHeader("Layout"))
+    if (!ImGui::CollapsingHeader("Layout"))
+        return;
+
+    if (ImGui::TreeNode("Child regions"))
     {
-        if (ImGui::TreeNode("Child regions"))
+        static bool disable_mouse_wheel = false;
+        static bool disable_menu = false;
+        ImGui::Checkbox("Disable Mouse Wheel", &disable_mouse_wheel);
+        ImGui::Checkbox("Disable Menu", &disable_menu);
+
+        static int line = 50;
+        bool goto_line = ImGui::Button("Goto");
+        ImGui::SameLine();
+        ImGui::PushItemWidth(100);
+        goto_line |= ImGui::InputInt("##Line", &line, 0, 0, ImGuiInputTextFlags_EnterReturnsTrue);
+        ImGui::PopItemWidth();
+
+        // Child 1: no border, enable horizontal scrollbar
         {
-            static bool disable_mouse_wheel = false;
-            static bool disable_menu = false;
-            ImGui::Checkbox("Disable Mouse Wheel", &disable_mouse_wheel);
-            ImGui::Checkbox("Disable Menu", &disable_menu);
-
-            static int line = 50;
-            bool goto_line = ImGui::Button("Goto");
-            ImGui::SameLine();
-            ImGui::PushItemWidth(100);
-            goto_line |= ImGui::InputInt("##Line", &line, 0, 0, ImGuiInputTextFlags_EnterReturnsTrue);
-            ImGui::PopItemWidth();
-
-            // Child 1: no border, enable horizontal scrollbar
+            ImGui::BeginChild("Child1", ImVec2(ImGui::GetWindowContentRegionWidth() * 0.5f, 300), false, ImGuiWindowFlags_HorizontalScrollbar | (disable_mouse_wheel ? ImGuiWindowFlags_NoScrollWithMouse : 0));
+            for (int i = 0; i < 100; i++)
             {
-                ImGui::BeginChild("Child1", ImVec2(ImGui::GetWindowContentRegionWidth() * 0.5f, 300), false, ImGuiWindowFlags_HorizontalScrollbar | (disable_mouse_wheel ? ImGuiWindowFlags_NoScrollWithMouse : 0));
-                for (int i = 0; i < 100; i++)
-                {
-                    ImGui::Text("%04d: scrollable region", i);
-                    if (goto_line && line == i)
-                        ImGui::SetScrollHereY();
-                }
-                if (goto_line && line >= 100)
+                ImGui::Text("%04d: scrollable region", i);
+                if (goto_line && line == i)
                     ImGui::SetScrollHereY();
-                ImGui::EndChild();
             }
+            if (goto_line && line >= 100)
+                ImGui::SetScrollHereY();
+            ImGui::EndChild();
+        }
 
-            ImGui::SameLine();
+        ImGui::SameLine();
 
-            // Child 2: rounded border
+        // Child 2: rounded border
+        {
+            ImGui::PushStyleVar(ImGuiStyleVar_ChildRounding, 5.0f);
+            ImGui::BeginChild("Child2", ImVec2(0, 300), true, (disable_mouse_wheel ? ImGuiWindowFlags_NoScrollWithMouse : 0) | (disable_menu ? 0 : ImGuiWindowFlags_MenuBar));
+            if (!disable_menu && ImGui::BeginMenuBar())
             {
-                ImGui::PushStyleVar(ImGuiStyleVar_ChildRounding, 5.0f);
-                ImGui::BeginChild("Child2", ImVec2(0, 300), true, (disable_mouse_wheel ? ImGuiWindowFlags_NoScrollWithMouse : 0) | (disable_menu ? 0 : ImGuiWindowFlags_MenuBar));
-                if (!disable_menu && ImGui::BeginMenuBar())
+                if (ImGui::BeginMenu("Menu"))
                 {
-                    if (ImGui::BeginMenu("Menu"))
-                    {
-                        ShowExampleMenuFile();
-                        ImGui::EndMenu();
-                    }
-                    ImGui::EndMenuBar();
+                    ShowExampleMenuFile();
+                    ImGui::EndMenu();
                 }
-                ImGui::Columns(2);
-                for (int i = 0; i < 100; i++)
-                {
-                    char buf[32];
-                    sprintf(buf, "%03d", i);
-                    ImGui::Button(buf, ImVec2(-1.0f, 0.0f));
-                    ImGui::NextColumn();
-                }
-                ImGui::EndChild();
-                ImGui::PopStyleVar();
+                ImGui::EndMenuBar();
             }
-
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Widgets Width"))
-        {
-            static float f = 0.0f;
-            ImGui::Text("PushItemWidth(100)");
-            ImGui::SameLine(); ShowHelpMarker("Fixed width.");
-            ImGui::PushItemWidth(100);
-            ImGui::DragFloat("float##1", &f);
-            ImGui::PopItemWidth();
-
-            ImGui::Text("PushItemWidth(GetWindowWidth() * 0.5f)");
-            ImGui::SameLine(); ShowHelpMarker("Half of window width.");
-            ImGui::PushItemWidth(ImGui::GetWindowWidth() * 0.5f);
-            ImGui::DragFloat("float##2", &f);
-            ImGui::PopItemWidth();
-
-            ImGui::Text("PushItemWidth(GetContentRegionAvailWidth() * 0.5f)");
-            ImGui::SameLine(); ShowHelpMarker("Half of available width.\n(~ right-cursor_pos)\n(works within a column set)");
-            ImGui::PushItemWidth(ImGui::GetContentRegionAvailWidth() * 0.5f);
-            ImGui::DragFloat("float##3", &f);
-            ImGui::PopItemWidth();
-
-            ImGui::Text("PushItemWidth(-100)");
-            ImGui::SameLine(); ShowHelpMarker("Align to right edge minus 100");
-            ImGui::PushItemWidth(-100);
-            ImGui::DragFloat("float##4", &f);
-            ImGui::PopItemWidth();
-
-            ImGui::Text("PushItemWidth(-1)");
-            ImGui::SameLine(); ShowHelpMarker("Align to right edge");
-            ImGui::PushItemWidth(-1);
-            ImGui::DragFloat("float##5", &f);
-            ImGui::PopItemWidth();
-
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Basic Horizontal Layout"))
-        {
-            ImGui::TextWrapped("(Use ImGui::SameLine() to keep adding items to the right of the preceding item)");
-
-            // Text
-            ImGui::Text("Two items: Hello"); ImGui::SameLine();
-            ImGui::TextColored(ImVec4(1,1,0,1), "Sailor");
-
-            // Adjust spacing
-            ImGui::Text("More spacing: Hello"); ImGui::SameLine(0, 20);
-            ImGui::TextColored(ImVec4(1,1,0,1), "Sailor");
-
-            // Button
-            ImGui::AlignTextToFramePadding();
-            ImGui::Text("Normal buttons"); ImGui::SameLine();
-            ImGui::Button("Banana"); ImGui::SameLine();
-            ImGui::Button("Apple"); ImGui::SameLine();
-            ImGui::Button("Corniflower");
-
-            // Button
-            ImGui::Text("Small buttons"); ImGui::SameLine();
-            ImGui::SmallButton("Like this one"); ImGui::SameLine();
-            ImGui::Text("can fit within a text block.");
-
-            // Aligned to arbitrary position. Easy/cheap column.
-            ImGui::Text("Aligned");
-            ImGui::SameLine(150); ImGui::Text("x=150");
-            ImGui::SameLine(300); ImGui::Text("x=300");
-            ImGui::Text("Aligned");
-            ImGui::SameLine(150); ImGui::SmallButton("x=150");
-            ImGui::SameLine(300); ImGui::SmallButton("x=300");
-
-            // Checkbox
-            static bool c1 = false, c2 = false, c3 = false, c4 = false;
-            ImGui::Checkbox("My", &c1); ImGui::SameLine();
-            ImGui::Checkbox("Tailor", &c2); ImGui::SameLine();
-            ImGui::Checkbox("Is", &c3); ImGui::SameLine();
-            ImGui::Checkbox("Rich", &c4);
-
-            // Various
-            static float f0 = 1.0f, f1 = 2.0f, f2 = 3.0f;
-            ImGui::PushItemWidth(80);
-            const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD" };
-            static int item = -1;
-            ImGui::Combo("Combo", &item, items, IM_ARRAYSIZE(items)); ImGui::SameLine();
-            ImGui::SliderFloat("X", &f0, 0.0f, 5.0f); ImGui::SameLine();
-            ImGui::SliderFloat("Y", &f1, 0.0f, 5.0f); ImGui::SameLine();
-            ImGui::SliderFloat("Z", &f2, 0.0f, 5.0f);
-            ImGui::PopItemWidth();
-
-            ImGui::PushItemWidth(80);
-            ImGui::Text("Lists:");
-            static int selection[4] = { 0, 1, 2, 3 };
-            for (int i = 0; i < 4; i++)
+            ImGui::Columns(2);
+            for (int i = 0; i < 100; i++)
             {
-                if (i > 0) ImGui::SameLine();
-                ImGui::PushID(i);
-                ImGui::ListBox("", &selection[i], items, IM_ARRAYSIZE(items));
-                ImGui::PopID();
-                //if (ImGui::IsItemHovered()) ImGui::SetTooltip("ListBox %d hovered", i);
+                char buf[32];
+                sprintf(buf, "%03d", i);
+                ImGui::Button(buf, ImVec2(-1.0f, 0.0f));
+                ImGui::NextColumn();
             }
-            ImGui::PopItemWidth();
-
-            // Dummy
-            ImVec2 button_sz(40, 40);
-            ImGui::Button("A", button_sz); ImGui::SameLine();
-            ImGui::Dummy(button_sz); ImGui::SameLine();
-            ImGui::Button("B", button_sz);
-
-            // Manually wrapping (we should eventually provide this as an automatic layout feature, but for now you can do it manually)
-            ImGui::Text("Manually wrapping:");
-            ImGuiStyle& style = ImGui::GetStyle();
-            int buttons_count = 20;
-            float window_visible_x2 = ImGui::GetWindowPos().x + ImGui::GetWindowContentRegionMax().x;
-            for (int n = 0; n < buttons_count; n++)
-            {
-                ImGui::PushID(n);
-                ImGui::Button("Box", button_sz);
-                float last_button_x2 = ImGui::GetItemRectMax().x;
-                float next_button_x2 = last_button_x2 + style.ItemSpacing.x + button_sz.x; // Expected position if next button was on same line
-                if (n + 1 < buttons_count && next_button_x2 < window_visible_x2)
-                    ImGui::SameLine();
-                ImGui::PopID();
-            }
-
-            ImGui::TreePop();
+            ImGui::EndChild();
+            ImGui::PopStyleVar();
         }
 
-        if (ImGui::TreeNode("Groups"))
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Widgets Width"))
+    {
+        static float f = 0.0f;
+        ImGui::Text("PushItemWidth(100)");
+        ImGui::SameLine(); ShowHelpMarker("Fixed width.");
+        ImGui::PushItemWidth(100);
+        ImGui::DragFloat("float##1", &f);
+        ImGui::PopItemWidth();
+
+        ImGui::Text("PushItemWidth(GetWindowWidth() * 0.5f)");
+        ImGui::SameLine(); ShowHelpMarker("Half of window width.");
+        ImGui::PushItemWidth(ImGui::GetWindowWidth() * 0.5f);
+        ImGui::DragFloat("float##2", &f);
+        ImGui::PopItemWidth();
+
+        ImGui::Text("PushItemWidth(GetContentRegionAvailWidth() * 0.5f)");
+        ImGui::SameLine(); ShowHelpMarker("Half of available width.\n(~ right-cursor_pos)\n(works within a column set)");
+        ImGui::PushItemWidth(ImGui::GetContentRegionAvailWidth() * 0.5f);
+        ImGui::DragFloat("float##3", &f);
+        ImGui::PopItemWidth();
+
+        ImGui::Text("PushItemWidth(-100)");
+        ImGui::SameLine(); ShowHelpMarker("Align to right edge minus 100");
+        ImGui::PushItemWidth(-100);
+        ImGui::DragFloat("float##4", &f);
+        ImGui::PopItemWidth();
+
+        ImGui::Text("PushItemWidth(-1)");
+        ImGui::SameLine(); ShowHelpMarker("Align to right edge");
+        ImGui::PushItemWidth(-1);
+        ImGui::DragFloat("float##5", &f);
+        ImGui::PopItemWidth();
+
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Basic Horizontal Layout"))
+    {
+        ImGui::TextWrapped("(Use ImGui::SameLine() to keep adding items to the right of the preceding item)");
+
+        // Text
+        ImGui::Text("Two items: Hello"); ImGui::SameLine();
+        ImGui::TextColored(ImVec4(1,1,0,1), "Sailor");
+
+        // Adjust spacing
+        ImGui::Text("More spacing: Hello"); ImGui::SameLine(0, 20);
+        ImGui::TextColored(ImVec4(1,1,0,1), "Sailor");
+
+        // Button
+        ImGui::AlignTextToFramePadding();
+        ImGui::Text("Normal buttons"); ImGui::SameLine();
+        ImGui::Button("Banana"); ImGui::SameLine();
+        ImGui::Button("Apple"); ImGui::SameLine();
+        ImGui::Button("Corniflower");
+
+        // Button
+        ImGui::Text("Small buttons"); ImGui::SameLine();
+        ImGui::SmallButton("Like this one"); ImGui::SameLine();
+        ImGui::Text("can fit within a text block.");
+
+        // Aligned to arbitrary position. Easy/cheap column.
+        ImGui::Text("Aligned");
+        ImGui::SameLine(150); ImGui::Text("x=150");
+        ImGui::SameLine(300); ImGui::Text("x=300");
+        ImGui::Text("Aligned");
+        ImGui::SameLine(150); ImGui::SmallButton("x=150");
+        ImGui::SameLine(300); ImGui::SmallButton("x=300");
+
+        // Checkbox
+        static bool c1 = false, c2 = false, c3 = false, c4 = false;
+        ImGui::Checkbox("My", &c1); ImGui::SameLine();
+        ImGui::Checkbox("Tailor", &c2); ImGui::SameLine();
+        ImGui::Checkbox("Is", &c3); ImGui::SameLine();
+        ImGui::Checkbox("Rich", &c4);
+
+        // Various
+        static float f0 = 1.0f, f1 = 2.0f, f2 = 3.0f;
+        ImGui::PushItemWidth(80);
+        const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD" };
+        static int item = -1;
+        ImGui::Combo("Combo", &item, items, IM_ARRAYSIZE(items)); ImGui::SameLine();
+        ImGui::SliderFloat("X", &f0, 0.0f, 5.0f); ImGui::SameLine();
+        ImGui::SliderFloat("Y", &f1, 0.0f, 5.0f); ImGui::SameLine();
+        ImGui::SliderFloat("Z", &f2, 0.0f, 5.0f);
+        ImGui::PopItemWidth();
+
+        ImGui::PushItemWidth(80);
+        ImGui::Text("Lists:");
+        static int selection[4] = { 0, 1, 2, 3 };
+        for (int i = 0; i < 4; i++)
         {
-            ImGui::TextWrapped("(Using ImGui::BeginGroup()/EndGroup() to layout items. BeginGroup() basically locks the horizontal position. EndGroup() bundles the whole group so that you can use functions such as IsItemHovered() on it.)");
+            if (i > 0) ImGui::SameLine();
+            ImGui::PushID(i);
+            ImGui::ListBox("", &selection[i], items, IM_ARRAYSIZE(items));
+            ImGui::PopID();
+            //if (ImGui::IsItemHovered()) ImGui::SetTooltip("ListBox %d hovered", i);
+        }
+        ImGui::PopItemWidth();
+
+        // Dummy
+        ImVec2 button_sz(40, 40);
+        ImGui::Button("A", button_sz); ImGui::SameLine();
+        ImGui::Dummy(button_sz); ImGui::SameLine();
+        ImGui::Button("B", button_sz);
+
+        // Manually wrapping (we should eventually provide this as an automatic layout feature, but for now you can do it manually)
+        ImGui::Text("Manually wrapping:");
+        ImGuiStyle& style = ImGui::GetStyle();
+        int buttons_count = 20;
+        float window_visible_x2 = ImGui::GetWindowPos().x + ImGui::GetWindowContentRegionMax().x;
+        for (int n = 0; n < buttons_count; n++)
+        {
+            ImGui::PushID(n);
+            ImGui::Button("Box", button_sz);
+            float last_button_x2 = ImGui::GetItemRectMax().x;
+            float next_button_x2 = last_button_x2 + style.ItemSpacing.x + button_sz.x; // Expected position if next button was on same line
+            if (n + 1 < buttons_count && next_button_x2 < window_visible_x2)
+                ImGui::SameLine();
+            ImGui::PopID();
+        }
+
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Groups"))
+    {
+        ImGui::TextWrapped("(Using ImGui::BeginGroup()/EndGroup() to layout items. BeginGroup() basically locks the horizontal position. EndGroup() bundles the whole group so that you can use functions such as IsItemHovered() on it.)");
+        ImGui::BeginGroup();
+        {
             ImGui::BeginGroup();
-            {
-                ImGui::BeginGroup();
-                ImGui::Button("AAA");
-                ImGui::SameLine();
-                ImGui::Button("BBB");
-                ImGui::SameLine();
-                ImGui::BeginGroup();
-                ImGui::Button("CCC");
-                ImGui::Button("DDD");
-                ImGui::EndGroup();
-                ImGui::SameLine();
-                ImGui::Button("EEE");
-                ImGui::EndGroup();
-                if (ImGui::IsItemHovered())
-                    ImGui::SetTooltip("First group hovered");
-            }
-            // Capture the group size and create widgets using the same size
-            ImVec2 size = ImGui::GetItemRectSize();
-            const float values[5] = { 0.5f, 0.20f, 0.80f, 0.60f, 0.25f };
-            ImGui::PlotHistogram("##values", values, IM_ARRAYSIZE(values), 0, NULL, 0.0f, 1.0f, size);
-
-            ImGui::Button("ACTION", ImVec2((size.x - ImGui::GetStyle().ItemSpacing.x)*0.5f, size.y));
+            ImGui::Button("AAA");
             ImGui::SameLine();
-            ImGui::Button("REACTION", ImVec2((size.x - ImGui::GetStyle().ItemSpacing.x)*0.5f, size.y));
+            ImGui::Button("BBB");
+            ImGui::SameLine();
+            ImGui::BeginGroup();
+            ImGui::Button("CCC");
+            ImGui::Button("DDD");
             ImGui::EndGroup();
             ImGui::SameLine();
+            ImGui::Button("EEE");
+            ImGui::EndGroup();
+            if (ImGui::IsItemHovered())
+                ImGui::SetTooltip("First group hovered");
+        }
+        // Capture the group size and create widgets using the same size
+        ImVec2 size = ImGui::GetItemRectSize();
+        const float values[5] = { 0.5f, 0.20f, 0.80f, 0.60f, 0.25f };
+        ImGui::PlotHistogram("##values", values, IM_ARRAYSIZE(values), 0, NULL, 0.0f, 1.0f, size);
 
-            ImGui::Button("LEVERAGE\nBUZZWORD", size);
-            ImGui::SameLine();
+        ImGui::Button("ACTION", ImVec2((size.x - ImGui::GetStyle().ItemSpacing.x)*0.5f, size.y));
+        ImGui::SameLine();
+        ImGui::Button("REACTION", ImVec2((size.x - ImGui::GetStyle().ItemSpacing.x)*0.5f, size.y));
+        ImGui::EndGroup();
+        ImGui::SameLine();
 
-            if (ImGui::ListBoxHeader("List", size))
-            {
-                ImGui::Selectable("Selected", true);
-                ImGui::Selectable("Not Selected", false);
-                ImGui::ListBoxFooter();
-            }
+        ImGui::Button("LEVERAGE\nBUZZWORD", size);
+        ImGui::SameLine();
 
-            ImGui::TreePop();
+        if (ImGui::ListBoxHeader("List", size))
+        {
+            ImGui::Selectable("Selected", true);
+            ImGui::Selectable("Not Selected", false);
+            ImGui::ListBoxFooter();
         }
 
-        if (ImGui::TreeNode("Text Baseline Alignment"))
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Text Baseline Alignment"))
+    {
+        ImGui::TextWrapped("(This is testing the vertical alignment that occurs on text to keep it at the same baseline as widgets. Lines only composed of text or \"small\" widgets fit in less vertical spaces than lines with normal widgets)");
+
+        ImGui::Text("One\nTwo\nThree"); ImGui::SameLine();
+        ImGui::Text("Hello\nWorld"); ImGui::SameLine();
+        ImGui::Text("Banana");
+
+        ImGui::Text("Banana"); ImGui::SameLine();
+        ImGui::Text("Hello\nWorld"); ImGui::SameLine();
+        ImGui::Text("One\nTwo\nThree");
+
+        ImGui::Button("HOP##1"); ImGui::SameLine();
+        ImGui::Text("Banana"); ImGui::SameLine();
+        ImGui::Text("Hello\nWorld"); ImGui::SameLine();
+        ImGui::Text("Banana");
+
+        ImGui::Button("HOP##2"); ImGui::SameLine();
+        ImGui::Text("Hello\nWorld"); ImGui::SameLine();
+        ImGui::Text("Banana");
+
+        ImGui::Button("TEST##1"); ImGui::SameLine();
+        ImGui::Text("TEST"); ImGui::SameLine();
+        ImGui::SmallButton("TEST##2");
+
+        ImGui::AlignTextToFramePadding(); // If your line starts with text, call this to align it to upcoming widgets.
+        ImGui::Text("Text aligned to Widget"); ImGui::SameLine();
+        ImGui::Button("Widget##1"); ImGui::SameLine();
+        ImGui::Text("Widget"); ImGui::SameLine();
+        ImGui::SmallButton("Widget##2"); ImGui::SameLine();
+        ImGui::Button("Widget##3");
+
+        // Tree
+        const float spacing = ImGui::GetStyle().ItemInnerSpacing.x;
+        ImGui::Button("Button##1");
+        ImGui::SameLine(0.0f, spacing);
+        if (ImGui::TreeNode("Node##1")) { for (int i = 0; i < 6; i++) ImGui::BulletText("Item %d..", i); ImGui::TreePop(); }    // Dummy tree data
+
+        ImGui::AlignTextToFramePadding();         // Vertically align text node a bit lower so it'll be vertically centered with upcoming widget. Otherwise you can use SmallButton (smaller fit).
+        bool node_open = ImGui::TreeNode("Node##2");  // Common mistake to avoid: if we want to SameLine after TreeNode we need to do it before we add child content.
+        ImGui::SameLine(0.0f, spacing); ImGui::Button("Button##2");
+        if (node_open) { for (int i = 0; i < 6; i++) ImGui::BulletText("Item %d..", i); ImGui::TreePop(); }   // Dummy tree data
+
+        // Bullet
+        ImGui::Button("Button##3");
+        ImGui::SameLine(0.0f, spacing);
+        ImGui::BulletText("Bullet text");
+
+        ImGui::AlignTextToFramePadding();
+        ImGui::BulletText("Node");
+        ImGui::SameLine(0.0f, spacing); ImGui::Button("Button##4");
+
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Scrolling"))
+    {
+        ImGui::TextWrapped("(Use SetScrollHereY() or SetScrollFromPosY() to scroll to a given position.)");
+        static bool track = true;
+        static int track_line = 50, scroll_to_px = 200;
+        ImGui::Checkbox("Track", &track);
+        ImGui::PushItemWidth(100);
+        ImGui::SameLine(130); track |= ImGui::DragInt("##line", &track_line, 0.25f, 0, 99, "Line = %d");
+        bool scroll_to = ImGui::Button("Scroll To Pos");
+        ImGui::SameLine(130); scroll_to |= ImGui::DragInt("##pos_y", &scroll_to_px, 1.00f, 0, 9999, "Y = %d px");
+        ImGui::PopItemWidth();
+        if (scroll_to) track = false;
+
+        for (int i = 0; i < 5; i++)
         {
-            ImGui::TextWrapped("(This is testing the vertical alignment that occurs on text to keep it at the same baseline as widgets. Lines only composed of text or \"small\" widgets fit in less vertical spaces than lines with normal widgets)");
-
-            ImGui::Text("One\nTwo\nThree"); ImGui::SameLine();
-            ImGui::Text("Hello\nWorld"); ImGui::SameLine();
-            ImGui::Text("Banana");
-
-            ImGui::Text("Banana"); ImGui::SameLine();
-            ImGui::Text("Hello\nWorld"); ImGui::SameLine();
-            ImGui::Text("One\nTwo\nThree");
-
-            ImGui::Button("HOP##1"); ImGui::SameLine();
-            ImGui::Text("Banana"); ImGui::SameLine();
-            ImGui::Text("Hello\nWorld"); ImGui::SameLine();
-            ImGui::Text("Banana");
-
-            ImGui::Button("HOP##2"); ImGui::SameLine();
-            ImGui::Text("Hello\nWorld"); ImGui::SameLine();
-            ImGui::Text("Banana");
-
-            ImGui::Button("TEST##1"); ImGui::SameLine();
-            ImGui::Text("TEST"); ImGui::SameLine();
-            ImGui::SmallButton("TEST##2");
-
-            ImGui::AlignTextToFramePadding(); // If your line starts with text, call this to align it to upcoming widgets.
-            ImGui::Text("Text aligned to Widget"); ImGui::SameLine();
-            ImGui::Button("Widget##1"); ImGui::SameLine();
-            ImGui::Text("Widget"); ImGui::SameLine();
-            ImGui::SmallButton("Widget##2"); ImGui::SameLine();
-            ImGui::Button("Widget##3");
-
-            // Tree
-            const float spacing = ImGui::GetStyle().ItemInnerSpacing.x;
-            ImGui::Button("Button##1");
-            ImGui::SameLine(0.0f, spacing);
-            if (ImGui::TreeNode("Node##1")) { for (int i = 0; i < 6; i++) ImGui::BulletText("Item %d..", i); ImGui::TreePop(); }    // Dummy tree data
-
-            ImGui::AlignTextToFramePadding();         // Vertically align text node a bit lower so it'll be vertically centered with upcoming widget. Otherwise you can use SmallButton (smaller fit).
-            bool node_open = ImGui::TreeNode("Node##2");  // Common mistake to avoid: if we want to SameLine after TreeNode we need to do it before we add child content.
-            ImGui::SameLine(0.0f, spacing); ImGui::Button("Button##2");
-            if (node_open) { for (int i = 0; i < 6; i++) ImGui::BulletText("Item %d..", i); ImGui::TreePop(); }   // Dummy tree data
-
-            // Bullet
-            ImGui::Button("Button##3");
-            ImGui::SameLine(0.0f, spacing);
-            ImGui::BulletText("Bullet text");
-
-            ImGui::AlignTextToFramePadding();
-            ImGui::BulletText("Node");
-            ImGui::SameLine(0.0f, spacing); ImGui::Button("Button##4");
-
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Scrolling"))
-        {
-            ImGui::TextWrapped("(Use SetScrollHereY() or SetScrollFromPosY() to scroll to a given position.)");
-            static bool track = true;
-            static int track_line = 50, scroll_to_px = 200;
-            ImGui::Checkbox("Track", &track);
-            ImGui::PushItemWidth(100);
-            ImGui::SameLine(130); track |= ImGui::DragInt("##line", &track_line, 0.25f, 0, 99, "Line = %d");
-            bool scroll_to = ImGui::Button("Scroll To Pos");
-            ImGui::SameLine(130); scroll_to |= ImGui::DragInt("##pos_y", &scroll_to_px, 1.00f, 0, 9999, "Y = %d px");
-            ImGui::PopItemWidth();
-            if (scroll_to) track = false;
-
-            for (int i = 0; i < 5; i++)
+            if (i > 0) ImGui::SameLine();
+            ImGui::BeginGroup();
+            ImGui::Text("%s", i == 0 ? "Top" : i == 1 ? "25%" : i == 2 ? "Center" : i == 3 ? "75%" : "Bottom");
+            ImGui::BeginChild(ImGui::GetID((void*)(intptr_t)i), ImVec2(ImGui::GetWindowWidth() * 0.17f, 200.0f), true);
+            if (scroll_to)
+                ImGui::SetScrollFromPosY(ImGui::GetCursorStartPos().y + scroll_to_px, i * 0.25f);
+            for (int line = 0; line < 100; line++)
             {
-                if (i > 0) ImGui::SameLine();
-                ImGui::BeginGroup();
-                ImGui::Text("%s", i == 0 ? "Top" : i == 1 ? "25%" : i == 2 ? "Center" : i == 3 ? "75%" : "Bottom");
-                ImGui::BeginChild(ImGui::GetID((void*)(intptr_t)i), ImVec2(ImGui::GetWindowWidth() * 0.17f, 200.0f), true);
-                if (scroll_to)
-                    ImGui::SetScrollFromPosY(ImGui::GetCursorStartPos().y + scroll_to_px, i * 0.25f);
-                for (int line = 0; line < 100; line++)
+                if (track && line == track_line)
                 {
-                    if (track && line == track_line)
-                    {
-                        ImGui::TextColored(ImVec4(1,1,0,1), "Line %d", line);
-                        ImGui::SetScrollHereY(i * 0.25f); // 0.0f:top, 0.5f:center, 1.0f:bottom
-                    }
-                    else
-                    {
-                        ImGui::Text("Line %d", line);
-                    }
+                    ImGui::TextColored(ImVec4(1,1,0,1), "Line %d", line);
+                    ImGui::SetScrollHereY(i * 0.25f); // 0.0f:top, 0.5f:center, 1.0f:bottom
                 }
-                float scroll_y = ImGui::GetScrollY(), scroll_max_y = ImGui::GetScrollMaxY();
-                ImGui::EndChild();
-                ImGui::Text("%.0f/%0.f", scroll_y, scroll_max_y);
-                ImGui::EndGroup();
-            }
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Horizontal Scrolling"))
-        {
-            ImGui::Bullet(); ImGui::TextWrapped("Horizontal scrolling for a window has to be enabled explicitly via the ImGuiWindowFlags_HorizontalScrollbar flag.");
-            ImGui::Bullet(); ImGui::TextWrapped("You may want to explicitly specify content width by calling SetNextWindowContentWidth() before Begin().");
-            static int lines = 7;
-            ImGui::SliderInt("Lines", &lines, 1, 15);
-            ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 3.0f);
-            ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(2.0f, 1.0f));
-            ImGui::BeginChild("scrolling", ImVec2(0, ImGui::GetFrameHeightWithSpacing() * 7 + 30), true, ImGuiWindowFlags_HorizontalScrollbar);
-            for (int line = 0; line < lines; line++)
-            {
-                // Display random stuff (for the sake of this trivial demo we are using basic Button+SameLine. If you want to create your own time line for a real application you may be better off
-                // manipulating the cursor position yourself, aka using SetCursorPos/SetCursorScreenPos to position the widgets yourself. You may also want to use the lower-level ImDrawList API)
-                int num_buttons = 10 + ((line & 1) ? line * 9 : line * 3);
-                for (int n = 0; n < num_buttons; n++)
+                else
                 {
-                    if (n > 0) ImGui::SameLine();
-                    ImGui::PushID(n + line * 1000);
-                    char num_buf[16];
-                    sprintf(num_buf, "%d", n);
-                    const char* label = (!(n%15)) ? "FizzBuzz" : (!(n%3)) ? "Fizz" : (!(n%5)) ? "Buzz" : num_buf;
-                    float hue = n*0.05f;
-                    ImGui::PushStyleColor(ImGuiCol_Button, (ImVec4)ImColor::HSV(hue, 0.6f, 0.6f));
-                    ImGui::PushStyleColor(ImGuiCol_ButtonHovered, (ImVec4)ImColor::HSV(hue, 0.7f, 0.7f));
-                    ImGui::PushStyleColor(ImGuiCol_ButtonActive, (ImVec4)ImColor::HSV(hue, 0.8f, 0.8f));
-                    ImGui::Button(label, ImVec2(40.0f + sinf((float)(line + n)) * 20.0f, 0.0f));
-                    ImGui::PopStyleColor(3);
-                    ImGui::PopID();
+                    ImGui::Text("Line %d", line);
                 }
             }
-            float scroll_x = ImGui::GetScrollX(), scroll_max_x = ImGui::GetScrollMaxX();
+            float scroll_y = ImGui::GetScrollY(), scroll_max_y = ImGui::GetScrollMaxY();
             ImGui::EndChild();
-            ImGui::PopStyleVar(2);
-            float scroll_x_delta = 0.0f;
-            ImGui::SmallButton("<<"); if (ImGui::IsItemActive()) scroll_x_delta = -ImGui::GetIO().DeltaTime * 1000.0f; ImGui::SameLine();
-            ImGui::Text("Scroll from code"); ImGui::SameLine();
-            ImGui::SmallButton(">>"); if (ImGui::IsItemActive()) scroll_x_delta = +ImGui::GetIO().DeltaTime * 1000.0f; ImGui::SameLine();
-            ImGui::Text("%.0f/%.0f", scroll_x, scroll_max_x);
-            if (scroll_x_delta != 0.0f)
-            {
-                ImGui::BeginChild("scrolling"); // Demonstrate a trick: you can use Begin to set yourself in the context of another window (here we are already out of your child window)
-                ImGui::SetScrollX(ImGui::GetScrollX() + scroll_x_delta);
-                ImGui::End();
-            }
-            ImGui::TreePop();
+            ImGui::Text("%.0f/%0.f", scroll_y, scroll_max_y);
+            ImGui::EndGroup();
         }
+        ImGui::TreePop();
+    }
 
-        if (ImGui::TreeNode("Clipping"))
+    if (ImGui::TreeNode("Horizontal Scrolling"))
+    {
+        ImGui::Bullet(); ImGui::TextWrapped("Horizontal scrolling for a window has to be enabled explicitly via the ImGuiWindowFlags_HorizontalScrollbar flag.");
+        ImGui::Bullet(); ImGui::TextWrapped("You may want to explicitly specify content width by calling SetNextWindowContentWidth() before Begin().");
+        static int lines = 7;
+        ImGui::SliderInt("Lines", &lines, 1, 15);
+        ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 3.0f);
+        ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(2.0f, 1.0f));
+        ImGui::BeginChild("scrolling", ImVec2(0, ImGui::GetFrameHeightWithSpacing() * 7 + 30), true, ImGuiWindowFlags_HorizontalScrollbar);
+        for (int line = 0; line < lines; line++)
         {
-            static ImVec2 size(100, 100), offset(50, 20);
-            ImGui::TextWrapped("On a per-widget basis we are occasionally clipping text CPU-side if it won't fit in its frame. Otherwise we are doing coarser clipping + passing a scissor rectangle to the renderer. The system is designed to try minimizing both execution and CPU/GPU rendering cost.");
-            ImGui::DragFloat2("size", (float*)&size, 0.5f, 0.0f, 200.0f, "%.0f");
-            ImGui::TextWrapped("(Click and drag)");
-            ImVec2 pos = ImGui::GetCursorScreenPos();
-            ImVec4 clip_rect(pos.x, pos.y, pos.x + size.x, pos.y + size.y);
-            ImGui::InvisibleButton("##dummy", size);
-            if (ImGui::IsItemActive() && ImGui::IsMouseDragging()) { offset.x += ImGui::GetIO().MouseDelta.x; offset.y += ImGui::GetIO().MouseDelta.y; }
-            ImGui::GetWindowDrawList()->AddRectFilled(pos, ImVec2(pos.x + size.x, pos.y + size.y), IM_COL32(90, 90, 120, 255));
-            ImGui::GetWindowDrawList()->AddText(ImGui::GetFont(), ImGui::GetFontSize()*2.0f, ImVec2(pos.x + offset.x, pos.y + offset.y), IM_COL32(255, 255, 255, 255), "Line 1 hello\nLine 2 clip me!", NULL, 0.0f, &clip_rect);
-            ImGui::TreePop();
+            // Display random stuff (for the sake of this trivial demo we are using basic Button+SameLine. If you want to create your own time line for a real application you may be better off
+            // manipulating the cursor position yourself, aka using SetCursorPos/SetCursorScreenPos to position the widgets yourself. You may also want to use the lower-level ImDrawList API)
+            int num_buttons = 10 + ((line & 1) ? line * 9 : line * 3);
+            for (int n = 0; n < num_buttons; n++)
+            {
+                if (n > 0) ImGui::SameLine();
+                ImGui::PushID(n + line * 1000);
+                char num_buf[16];
+                sprintf(num_buf, "%d", n);
+                const char* label = (!(n%15)) ? "FizzBuzz" : (!(n%3)) ? "Fizz" : (!(n%5)) ? "Buzz" : num_buf;
+                float hue = n*0.05f;
+                ImGui::PushStyleColor(ImGuiCol_Button, (ImVec4)ImColor::HSV(hue, 0.6f, 0.6f));
+                ImGui::PushStyleColor(ImGuiCol_ButtonHovered, (ImVec4)ImColor::HSV(hue, 0.7f, 0.7f));
+                ImGui::PushStyleColor(ImGuiCol_ButtonActive, (ImVec4)ImColor::HSV(hue, 0.8f, 0.8f));
+                ImGui::Button(label, ImVec2(40.0f + sinf((float)(line + n)) * 20.0f, 0.0f));
+                ImGui::PopStyleColor(3);
+                ImGui::PopID();
+            }
         }
+        float scroll_x = ImGui::GetScrollX(), scroll_max_x = ImGui::GetScrollMaxX();
+        ImGui::EndChild();
+        ImGui::PopStyleVar(2);
+        float scroll_x_delta = 0.0f;
+        ImGui::SmallButton("<<"); if (ImGui::IsItemActive()) scroll_x_delta = -ImGui::GetIO().DeltaTime * 1000.0f; ImGui::SameLine();
+        ImGui::Text("Scroll from code"); ImGui::SameLine();
+        ImGui::SmallButton(">>"); if (ImGui::IsItemActive()) scroll_x_delta = +ImGui::GetIO().DeltaTime * 1000.0f; ImGui::SameLine();
+        ImGui::Text("%.0f/%.0f", scroll_x, scroll_max_x);
+        if (scroll_x_delta != 0.0f)
+        {
+            ImGui::BeginChild("scrolling"); // Demonstrate a trick: you can use Begin to set yourself in the context of another window (here we are already out of your child window)
+            ImGui::SetScrollX(ImGui::GetScrollX() + scroll_x_delta);
+            ImGui::End();
+        }
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Clipping"))
+    {
+        static ImVec2 size(100, 100), offset(50, 20);
+        ImGui::TextWrapped("On a per-widget basis we are occasionally clipping text CPU-side if it won't fit in its frame. Otherwise we are doing coarser clipping + passing a scissor rectangle to the renderer. The system is designed to try minimizing both execution and CPU/GPU rendering cost.");
+        ImGui::DragFloat2("size", (float*)&size, 0.5f, 0.0f, 200.0f, "%.0f");
+        ImGui::TextWrapped("(Click and drag)");
+        ImVec2 pos = ImGui::GetCursorScreenPos();
+        ImVec4 clip_rect(pos.x, pos.y, pos.x + size.x, pos.y + size.y);
+        ImGui::InvisibleButton("##dummy", size);
+        if (ImGui::IsItemActive() && ImGui::IsMouseDragging()) { offset.x += ImGui::GetIO().MouseDelta.x; offset.y += ImGui::GetIO().MouseDelta.y; }
+        ImGui::GetWindowDrawList()->AddRectFilled(pos, ImVec2(pos.x + size.x, pos.y + size.y), IM_COL32(90, 90, 120, 255));
+        ImGui::GetWindowDrawList()->AddText(ImGui::GetFont(), ImGui::GetFontSize()*2.0f, ImVec2(pos.x + offset.x, pos.y + offset.y), IM_COL32(255, 255, 255, 255), "Line 1 hello\nLine 2 clip me!", NULL, 0.0f, &clip_rect);
+        ImGui::TreePop();
     }
 }
 
 static void ShowDemoWindowPopups()
 {
-    if (ImGui::CollapsingHeader("Popups & Modal windows"))
+    if (!ImGui::CollapsingHeader("Popups & Modal windows"))
+        return;
+
+    // Popups are windows with a few special properties:
+    // - They block normal mouse hovering detection outside them. (*)
+    // - Unless modal, they can be closed by clicking anywhere outside them, or by pressing ESCAPE.
+    // - Their visibility state (~bool) is held internally by imgui instead of being held by the programmer as we are used to with regular Begin() calls.
+    // (*) One can use IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup) to bypass it and detect hovering even when normally blocked by a popup.
+    // Those three properties are intimately connected. The library needs to hold their visibility state because it can close popups at any time.
+
+    // Typical use for regular windows:
+    //   bool my_tool_is_active = false; if (ImGui::Button("Open")) my_tool_is_active = true; [...] if (my_tool_is_active) Begin("My Tool", &my_tool_is_active) { [...] } End();
+    // Typical use for popups:
+    //   if (ImGui::Button("Open")) ImGui::OpenPopup("MyPopup"); if (ImGui::BeginPopup("MyPopup") { [...] EndPopup(); }
+
+    // With popups we have to go through a library call (here OpenPopup) to manipulate the visibility state.
+    // This may be a bit confusing at first but it should quickly make sense. Follow on the examples below. 
+
+    if (ImGui::TreeNode("Popups"))
     {
-        // Popups are windows with a few special properties:
-        // - They block normal mouse hovering detection outside them. (*)
-        // - Unless modal, they can be closed by clicking anywhere outside them, or by pressing ESCAPE.
-        // - Their visibility state (~bool) is held internally by imgui instead of being held by the programmer as we are used to with regular Begin() calls.
-        // (*) One can use IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup) to bypass it and detect hovering even when normally blocked by a popup.
-        // Those three properties are intimately connected. The library needs to hold their visibility state because it can close popups at any time.
+        ImGui::TextWrapped("When a popup is active, it inhibits interacting with windows that are behind the popup. Clicking outside the popup closes it.");
 
-        // Typical use for regular windows:
-        //   bool my_tool_is_active = false; if (ImGui::Button("Open")) my_tool_is_active = true; [...] if (my_tool_is_active) Begin("My Tool", &my_tool_is_active) { [...] } End();
-        // Typical use for popups:
-        //   if (ImGui::Button("Open")) ImGui::OpenPopup("MyPopup"); if (ImGui::BeginPopup("MyPopup") { [...] EndPopup(); }
+        static int selected_fish = -1;
+        const char* names[] = { "Bream", "Haddock", "Mackerel", "Pollock", "Tilefish" };
+        static bool toggles[] = { true, false, false, false, false };
 
-        // With popups we have to go through a library call (here OpenPopup) to manipulate the visibility state.
-        // This may be a bit confusing at first but it should quickly make sense. Follow on the examples below. 
-
-        if (ImGui::TreeNode("Popups"))
+        // Simple selection popup
+        // (If you want to show the current selection inside the Button itself, you may want to build a string using the "###" operator to preserve a constant ID with a variable label)
+        if (ImGui::Button("Select.."))
+            ImGui::OpenPopup("my_select_popup");
+        ImGui::SameLine();
+        ImGui::TextUnformatted(selected_fish == -1 ? "<None>" : names[selected_fish]);
+        if (ImGui::BeginPopup("my_select_popup"))
         {
-            ImGui::TextWrapped("When a popup is active, it inhibits interacting with windows that are behind the popup. Clicking outside the popup closes it.");
+            ImGui::Text("Aquarium");
+            ImGui::Separator();
+            for (int i = 0; i < IM_ARRAYSIZE(names); i++)
+                if (ImGui::Selectable(names[i]))
+                    selected_fish = i;
+            ImGui::EndPopup();
+        }
 
-            static int selected_fish = -1;
-            const char* names[] = { "Bream", "Haddock", "Mackerel", "Pollock", "Tilefish" };
-            static bool toggles[] = { true, false, false, false, false };
-
-            // Simple selection popup
-            // (If you want to show the current selection inside the Button itself, you may want to build a string using the "###" operator to preserve a constant ID with a variable label)
-            if (ImGui::Button("Select.."))
-                ImGui::OpenPopup("my_select_popup");
-            ImGui::SameLine();
-            ImGui::TextUnformatted(selected_fish == -1 ? "<None>" : names[selected_fish]);
-            if (ImGui::BeginPopup("my_select_popup"))
+        // Showing a menu with toggles
+        if (ImGui::Button("Toggle.."))
+            ImGui::OpenPopup("my_toggle_popup");
+        if (ImGui::BeginPopup("my_toggle_popup"))
+        {
+            for (int i = 0; i < IM_ARRAYSIZE(names); i++)
+                ImGui::MenuItem(names[i], "", &toggles[i]);
+            if (ImGui::BeginMenu("Sub-menu"))
             {
-                ImGui::Text("Aquarium");
-                ImGui::Separator();
-                for (int i = 0; i < IM_ARRAYSIZE(names); i++)
-                    if (ImGui::Selectable(names[i]))
-                        selected_fish = i;
-                ImGui::EndPopup();
+                ImGui::MenuItem("Click me");
+                ImGui::EndMenu();
             }
 
-            // Showing a menu with toggles
-            if (ImGui::Button("Toggle.."))
-                ImGui::OpenPopup("my_toggle_popup");
-            if (ImGui::BeginPopup("my_toggle_popup"))
+            ImGui::Separator();
+            ImGui::Text("Tooltip here");
+            if (ImGui::IsItemHovered())
+                ImGui::SetTooltip("I am a tooltip over a popup");
+
+            if (ImGui::Button("Stacked Popup"))
+                ImGui::OpenPopup("another popup");
+            if (ImGui::BeginPopup("another popup"))
             {
                 for (int i = 0; i < IM_ARRAYSIZE(names); i++)
                     ImGui::MenuItem(names[i], "", &toggles[i]);
@@ -1960,339 +1978,321 @@
                     ImGui::MenuItem("Click me");
                     ImGui::EndMenu();
                 }
-
-                ImGui::Separator();
-                ImGui::Text("Tooltip here");
-                if (ImGui::IsItemHovered())
-                    ImGui::SetTooltip("I am a tooltip over a popup");
-
-                if (ImGui::Button("Stacked Popup"))
-                    ImGui::OpenPopup("another popup");
-                if (ImGui::BeginPopup("another popup"))
-                {
-                    for (int i = 0; i < IM_ARRAYSIZE(names); i++)
-                        ImGui::MenuItem(names[i], "", &toggles[i]);
-                    if (ImGui::BeginMenu("Sub-menu"))
-                    {
-                        ImGui::MenuItem("Click me");
-                        ImGui::EndMenu();
-                    }
-                    ImGui::EndPopup();
-                }
                 ImGui::EndPopup();
             }
-
-            // Call the more complete ShowExampleMenuFile which we use in various places of this demo
-            if (ImGui::Button("File Menu.."))
-                ImGui::OpenPopup("my_file_popup");
-            if (ImGui::BeginPopup("my_file_popup"))
-            {
-                ShowExampleMenuFile();
-                ImGui::EndPopup();
-            }
-
-            ImGui::TreePop();
+            ImGui::EndPopup();
         }
 
-        if (ImGui::TreeNode("Context menus"))
+        // Call the more complete ShowExampleMenuFile which we use in various places of this demo
+        if (ImGui::Button("File Menu.."))
+            ImGui::OpenPopup("my_file_popup");
+        if (ImGui::BeginPopup("my_file_popup"))
         {
-            // BeginPopupContextItem() is a helper to provide common/simple popup behavior of essentially doing:
-            //    if (IsItemHovered() && IsMouseReleased(0))
-            //       OpenPopup(id);
-            //    return BeginPopup(id);
-            // For more advanced uses you may want to replicate and cuztomize this code. This the comments inside BeginPopupContextItem() implementation.
-            static float value = 0.5f;
-            ImGui::Text("Value = %.3f (<-- right-click here)", value);
-            if (ImGui::BeginPopupContextItem("item context menu"))
-            {
-                if (ImGui::Selectable("Set to zero")) value = 0.0f;
-                if (ImGui::Selectable("Set to PI")) value = 3.1415f;
-                ImGui::PushItemWidth(-1);
-                ImGui::DragFloat("##Value", &value, 0.1f, 0.0f, 0.0f);
-                ImGui::PopItemWidth();
-                ImGui::EndPopup();
-            }
-
-            // We can also use OpenPopupOnItemClick() which is the same as BeginPopupContextItem() but without the Begin call.
-            // So here we will make it that clicking on the text field with the right mouse button (1) will toggle the visibility of the popup above.
-            ImGui::Text("(You can also right-click me to the same popup as above.)");
-            ImGui::OpenPopupOnItemClick("item context menu", 1);
-
-            // When used after an item that has an ID (here the Button), we can skip providing an ID to BeginPopupContextItem(). 
-            // BeginPopupContextItem() will use the last item ID as the popup ID.
-            // In addition here, we want to include your editable label inside the button label. We use the ### operator to override the ID (read FAQ about ID for details)
-            static char name[32] = "Label1";
-            char buf[64]; sprintf(buf, "Button: %s###Button", name); // ### operator override ID ignoring the preceding label
-            ImGui::Button(buf);
-            if (ImGui::BeginPopupContextItem())
-            {
-                ImGui::Text("Edit name:");
-                ImGui::InputText("##edit", name, IM_ARRAYSIZE(name));
-                if (ImGui::Button("Close"))
-                    ImGui::CloseCurrentPopup();
-                ImGui::EndPopup();
-            }
-            ImGui::SameLine(); ImGui::Text("(<-- right-click here)");
-
-            ImGui::TreePop();
+            ShowExampleMenuFile();
+            ImGui::EndPopup();
         }
 
-        if (ImGui::TreeNode("Modals"))
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Context menus"))
+    {
+        // BeginPopupContextItem() is a helper to provide common/simple popup behavior of essentially doing:
+        //    if (IsItemHovered() && IsMouseReleased(0))
+        //       OpenPopup(id);
+        //    return BeginPopup(id);
+        // For more advanced uses you may want to replicate and cuztomize this code. This the comments inside BeginPopupContextItem() implementation.
+        static float value = 0.5f;
+        ImGui::Text("Value = %.3f (<-- right-click here)", value);
+        if (ImGui::BeginPopupContextItem("item context menu"))
         {
-            ImGui::TextWrapped("Modal windows are like popups but the user cannot close them by clicking outside the window.");
+            if (ImGui::Selectable("Set to zero")) value = 0.0f;
+            if (ImGui::Selectable("Set to PI")) value = 3.1415f;
+            ImGui::PushItemWidth(-1);
+            ImGui::DragFloat("##Value", &value, 0.1f, 0.0f, 0.0f);
+            ImGui::PopItemWidth();
+            ImGui::EndPopup();
+        }
 
-            if (ImGui::Button("Delete.."))
-                ImGui::OpenPopup("Delete?");
-            if (ImGui::BeginPopupModal("Delete?", NULL, ImGuiWindowFlags_AlwaysAutoResize))
+        // We can also use OpenPopupOnItemClick() which is the same as BeginPopupContextItem() but without the Begin call.
+        // So here we will make it that clicking on the text field with the right mouse button (1) will toggle the visibility of the popup above.
+        ImGui::Text("(You can also right-click me to the same popup as above.)");
+        ImGui::OpenPopupOnItemClick("item context menu", 1);
+
+        // When used after an item that has an ID (here the Button), we can skip providing an ID to BeginPopupContextItem(). 
+        // BeginPopupContextItem() will use the last item ID as the popup ID.
+        // In addition here, we want to include your editable label inside the button label. We use the ### operator to override the ID (read FAQ about ID for details)
+        static char name[32] = "Label1";
+        char buf[64]; sprintf(buf, "Button: %s###Button", name); // ### operator override ID ignoring the preceding label
+        ImGui::Button(buf);
+        if (ImGui::BeginPopupContextItem())
+        {
+            ImGui::Text("Edit name:");
+            ImGui::InputText("##edit", name, IM_ARRAYSIZE(name));
+            if (ImGui::Button("Close"))
+                ImGui::CloseCurrentPopup();
+            ImGui::EndPopup();
+        }
+        ImGui::SameLine(); ImGui::Text("(<-- right-click here)");
+
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Modals"))
+    {
+        ImGui::TextWrapped("Modal windows are like popups but the user cannot close them by clicking outside the window.");
+
+        if (ImGui::Button("Delete.."))
+            ImGui::OpenPopup("Delete?");
+        if (ImGui::BeginPopupModal("Delete?", NULL, ImGuiWindowFlags_AlwaysAutoResize))
+        {
+            ImGui::Text("All those beautiful files will be deleted.\nThis operation cannot be undone!\n\n");
+            ImGui::Separator();
+
+            //static int dummy_i = 0;
+            //ImGui::Combo("Combo", &dummy_i, "Delete\0Delete harder\0");
+
+            static bool dont_ask_me_next_time = false;
+            ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
+            ImGui::Checkbox("Don't ask me next time", &dont_ask_me_next_time);
+            ImGui::PopStyleVar();
+
+            if (ImGui::Button("OK", ImVec2(120, 0))) { ImGui::CloseCurrentPopup(); }
+            ImGui::SetItemDefaultFocus();
+            ImGui::SameLine();
+            if (ImGui::Button("Cancel", ImVec2(120, 0))) { ImGui::CloseCurrentPopup(); }
+            ImGui::EndPopup();
+        }
+
+        if (ImGui::Button("Stacked modals.."))
+            ImGui::OpenPopup("Stacked 1");
+        if (ImGui::BeginPopupModal("Stacked 1"))
+        {
+            ImGui::Text("Hello from Stacked The First\nUsing style.Colors[ImGuiCol_ModalWindowDimBg] behind it.");
+            static int item = 1;
+            ImGui::Combo("Combo", &item, "aaaa\0bbbb\0cccc\0dddd\0eeee\0\0");
+            static float color[4] = { 0.4f,0.7f,0.0f,0.5f };
+            ImGui::ColorEdit4("color", color);  // This is to test behavior of stacked regular popups over a modal
+
+            if (ImGui::Button("Add another modal.."))
+                ImGui::OpenPopup("Stacked 2");
+            if (ImGui::BeginPopupModal("Stacked 2"))
             {
-                ImGui::Text("All those beautiful files will be deleted.\nThis operation cannot be undone!\n\n");
-                ImGui::Separator();
-
-                //static int dummy_i = 0;
-                //ImGui::Combo("Combo", &dummy_i, "Delete\0Delete harder\0");
-
-                static bool dont_ask_me_next_time = false;
-                ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
-                ImGui::Checkbox("Don't ask me next time", &dont_ask_me_next_time);
-                ImGui::PopStyleVar();
-
-                if (ImGui::Button("OK", ImVec2(120, 0))) { ImGui::CloseCurrentPopup(); }
-                ImGui::SetItemDefaultFocus();
-                ImGui::SameLine();
-                if (ImGui::Button("Cancel", ImVec2(120, 0))) { ImGui::CloseCurrentPopup(); }
-                ImGui::EndPopup();
-            }
-
-            if (ImGui::Button("Stacked modals.."))
-                ImGui::OpenPopup("Stacked 1");
-            if (ImGui::BeginPopupModal("Stacked 1"))
-            {
-                ImGui::Text("Hello from Stacked The First\nUsing style.Colors[ImGuiCol_ModalWindowDimBg] behind it.");
-                static int item = 1;
-                ImGui::Combo("Combo", &item, "aaaa\0bbbb\0cccc\0dddd\0eeee\0\0");
-                static float color[4] = { 0.4f,0.7f,0.0f,0.5f };
-                ImGui::ColorEdit4("color", color);  // This is to test behavior of stacked regular popups over a modal
-
-                if (ImGui::Button("Add another modal.."))
-                    ImGui::OpenPopup("Stacked 2");
-                if (ImGui::BeginPopupModal("Stacked 2"))
-                {
-                    ImGui::Text("Hello from Stacked The Second!");
-                    if (ImGui::Button("Close"))
-                        ImGui::CloseCurrentPopup();
-                    ImGui::EndPopup();
-                }
-
+                ImGui::Text("Hello from Stacked The Second!");
                 if (ImGui::Button("Close"))
                     ImGui::CloseCurrentPopup();
                 ImGui::EndPopup();
             }
 
-            ImGui::TreePop();
+            if (ImGui::Button("Close"))
+                ImGui::CloseCurrentPopup();
+            ImGui::EndPopup();
         }
 
-        if (ImGui::TreeNode("Menus inside a regular window"))
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Menus inside a regular window"))
+    {
+        ImGui::TextWrapped("Below we are testing adding menu items to a regular window. It's rather unusual but should work!");
+        ImGui::Separator();
+        // NB: As a quirk in this very specific example, we want to differentiate the parent of this menu from the parent of the various popup menus above.
+        // To do so we are encloding the items in a PushID()/PopID() block to make them two different menusets. If we don't, opening any popup above and hovering our menu here
+        // would open it. This is because once a menu is active, we allow to switch to a sibling menu by just hovering on it, which is the desired behavior for regular menus.
+        ImGui::PushID("foo");
+        ImGui::MenuItem("Menu item", "CTRL+M");
+        if (ImGui::BeginMenu("Menu inside a regular window"))
         {
-            ImGui::TextWrapped("Below we are testing adding menu items to a regular window. It's rather unusual but should work!");
-            ImGui::Separator();
-            // NB: As a quirk in this very specific example, we want to differentiate the parent of this menu from the parent of the various popup menus above.
-            // To do so we are encloding the items in a PushID()/PopID() block to make them two different menusets. If we don't, opening any popup above and hovering our menu here
-            // would open it. This is because once a menu is active, we allow to switch to a sibling menu by just hovering on it, which is the desired behavior for regular menus.
-            ImGui::PushID("foo");
-            ImGui::MenuItem("Menu item", "CTRL+M");
-            if (ImGui::BeginMenu("Menu inside a regular window"))
-            {
-                ShowExampleMenuFile();
-                ImGui::EndMenu();
-            }
-            ImGui::PopID();
-            ImGui::Separator();
-            ImGui::TreePop();
+            ShowExampleMenuFile();
+            ImGui::EndMenu();
         }
+        ImGui::PopID();
+        ImGui::Separator();
+        ImGui::TreePop();
     }
 }
 
 static void ShowDemoWindowColumns()
 {
-    if (ImGui::CollapsingHeader("Columns"))
+    if (!ImGui::CollapsingHeader("Columns"))
+        return;
+
+    ImGui::PushID("Columns");
+
+    // Basic columns
+    if (ImGui::TreeNode("Basic"))
     {
-        ImGui::PushID("Columns");
-
-        // Basic columns
-        if (ImGui::TreeNode("Basic"))
+        ImGui::Text("Without border:");
+        ImGui::Columns(3, "mycolumns3", false);  // 3-ways, no border
+        ImGui::Separator();
+        for (int n = 0; n < 14; n++)
         {
-            ImGui::Text("Without border:");
-            ImGui::Columns(3, "mycolumns3", false);  // 3-ways, no border
-            ImGui::Separator();
-            for (int n = 0; n < 14; n++)
-            {
-                char label[32];
-                sprintf(label, "Item %d", n);
-                if (ImGui::Selectable(label)) {}
-                //if (ImGui::Button(label, ImVec2(-1,0))) {}
-                ImGui::NextColumn();
-            }
-            ImGui::Columns(1);
-            ImGui::Separator();
-
-            ImGui::Text("With border:");
-            ImGui::Columns(4, "mycolumns"); // 4-ways, with border
-            ImGui::Separator();
-            ImGui::Text("ID"); ImGui::NextColumn();
-            ImGui::Text("Name"); ImGui::NextColumn();
-            ImGui::Text("Path"); ImGui::NextColumn();
-            ImGui::Text("Hovered"); ImGui::NextColumn();
-            ImGui::Separator();
-            const char* names[3] = { "One", "Two", "Three" };
-            const char* paths[3] = { "/path/one", "/path/two", "/path/three" };
-            static int selected = -1;
-            for (int i = 0; i < 3; i++)
-            {
-                char label[32];
-                sprintf(label, "%04d", i);
-                if (ImGui::Selectable(label, selected == i, ImGuiSelectableFlags_SpanAllColumns))
-                    selected = i;
-                bool hovered = ImGui::IsItemHovered();
-                ImGui::NextColumn();
-                ImGui::Text(names[i]); ImGui::NextColumn();
-                ImGui::Text(paths[i]); ImGui::NextColumn();
-                ImGui::Text("%d", hovered); ImGui::NextColumn();
-            }
-            ImGui::Columns(1);
-            ImGui::Separator();
-            ImGui::TreePop();
-        }
-
-        // Create multiple items in a same cell before switching to next column
-        if (ImGui::TreeNode("Mixed items"))
-        {
-            ImGui::Columns(3, "mixed");
-            ImGui::Separator();
-
-            ImGui::Text("Hello");
-            ImGui::Button("Banana");
+            char label[32];
+            sprintf(label, "Item %d", n);
+            if (ImGui::Selectable(label)) {}
+            //if (ImGui::Button(label, ImVec2(-1,0))) {}
             ImGui::NextColumn();
+        }
+        ImGui::Columns(1);
+        ImGui::Separator();
 
-            ImGui::Text("ImGui");
-            ImGui::Button("Apple");
-            static float foo = 1.0f;
-            ImGui::InputFloat("red", &foo, 0.05f, 0, "%.3f");
-            ImGui::Text("An extra line here.");
+        ImGui::Text("With border:");
+        ImGui::Columns(4, "mycolumns"); // 4-ways, with border
+        ImGui::Separator();
+        ImGui::Text("ID"); ImGui::NextColumn();
+        ImGui::Text("Name"); ImGui::NextColumn();
+        ImGui::Text("Path"); ImGui::NextColumn();
+        ImGui::Text("Hovered"); ImGui::NextColumn();
+        ImGui::Separator();
+        const char* names[3] = { "One", "Two", "Three" };
+        const char* paths[3] = { "/path/one", "/path/two", "/path/three" };
+        static int selected = -1;
+        for (int i = 0; i < 3; i++)
+        {
+            char label[32];
+            sprintf(label, "%04d", i);
+            if (ImGui::Selectable(label, selected == i, ImGuiSelectableFlags_SpanAllColumns))
+                selected = i;
+            bool hovered = ImGui::IsItemHovered();
             ImGui::NextColumn();
-
-            ImGui::Text("Sailor");
-            ImGui::Button("Corniflower");
-            static float bar = 1.0f;
-            ImGui::InputFloat("blue", &bar, 0.05f, 0, "%.3f");
-            ImGui::NextColumn();
-
-            if (ImGui::CollapsingHeader("Category A")) { ImGui::Text("Blah blah blah"); } ImGui::NextColumn();
-            if (ImGui::CollapsingHeader("Category B")) { ImGui::Text("Blah blah blah"); } ImGui::NextColumn();
-            if (ImGui::CollapsingHeader("Category C")) { ImGui::Text("Blah blah blah"); } ImGui::NextColumn();
-            ImGui::Columns(1);
-            ImGui::Separator();
-            ImGui::TreePop();
+            ImGui::Text(names[i]); ImGui::NextColumn();
+            ImGui::Text(paths[i]); ImGui::NextColumn();
+            ImGui::Text("%d", hovered); ImGui::NextColumn();
         }
-
-        // Word wrapping
-        if (ImGui::TreeNode("Word-wrapping"))
-        {
-            ImGui::Columns(2, "word-wrapping");
-            ImGui::Separator();
-            ImGui::TextWrapped("The quick brown fox jumps over the lazy dog.");
-            ImGui::TextWrapped("Hello Left");
-            ImGui::NextColumn();
-            ImGui::TextWrapped("The quick brown fox jumps over the lazy dog.");
-            ImGui::TextWrapped("Hello Right");
-            ImGui::Columns(1);
-            ImGui::Separator();
-            ImGui::TreePop();
-        }
-
-        if (ImGui::TreeNode("Borders"))
-        {
-            // NB: Future columns API should allow automatic horizontal borders.
-            static bool h_borders = true;
-            static bool v_borders = true;
-            ImGui::Checkbox("horizontal", &h_borders);
-            ImGui::SameLine();
-            ImGui::Checkbox("vertical", &v_borders);
-            ImGui::Columns(4, NULL, v_borders);
-            for (int i = 0; i < 4*3; i++)
-            {
-                if (h_borders && ImGui::GetColumnIndex() == 0)
-                    ImGui::Separator();
-                ImGui::Text("%c%c%c", 'a'+i, 'a'+i, 'a'+i);
-                ImGui::Text("Width %.2f\nOffset %.2f", ImGui::GetColumnWidth(), ImGui::GetColumnOffset());
-                ImGui::NextColumn();
-            }
-            ImGui::Columns(1);
-            if (h_borders)
-                ImGui::Separator();
-            ImGui::TreePop();
-        }
-
-        // Scrolling columns
-        /*
-        if (ImGui::TreeNode("Vertical Scrolling"))
-        {
-            ImGui::BeginChild("##header", ImVec2(0, ImGui::GetTextLineHeightWithSpacing()+ImGui::GetStyle().ItemSpacing.y));
-            ImGui::Columns(3);
-            ImGui::Text("ID"); ImGui::NextColumn();
-            ImGui::Text("Name"); ImGui::NextColumn();
-            ImGui::Text("Path"); ImGui::NextColumn();
-            ImGui::Columns(1);
-            ImGui::Separator();
-            ImGui::EndChild();
-            ImGui::BeginChild("##scrollingregion", ImVec2(0, 60));
-            ImGui::Columns(3);
-            for (int i = 0; i < 10; i++)
-            {
-                ImGui::Text("%04d", i); ImGui::NextColumn();
-                ImGui::Text("Foobar"); ImGui::NextColumn();
-                ImGui::Text("/path/foobar/%04d/", i); ImGui::NextColumn();
-            }
-            ImGui::Columns(1);
-            ImGui::EndChild();
-            ImGui::TreePop();
-        }
-        */
-
-        if (ImGui::TreeNode("Horizontal Scrolling"))
-        {
-            ImGui::SetNextWindowContentSize(ImVec2(1500.0f, 0.0f));
-            ImGui::BeginChild("##ScrollingRegion", ImVec2(0, ImGui::GetFontSize() * 20), false, ImGuiWindowFlags_HorizontalScrollbar);
-            ImGui::Columns(10);
-            int ITEMS_COUNT = 2000;
-            ImGuiListClipper clipper(ITEMS_COUNT);  // Also demonstrate using the clipper for large list
-            while (clipper.Step())
-            {
-                for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
-                    for (int j = 0; j < 10; j++)
-                    {
-                        ImGui::Text("Line %d Column %d...", i, j);
-                        ImGui::NextColumn();
-                    }
-            }
-            ImGui::Columns(1);
-            ImGui::EndChild();
-            ImGui::TreePop();
-        }
-
-        bool node_open = ImGui::TreeNode("Tree within single cell");
-        ImGui::SameLine(); ShowHelpMarker("NB: Tree node must be poped before ending the cell. There's no storage of state per-cell.");
-        if (node_open)
-        {
-            ImGui::Columns(2, "tree items");
-            ImGui::Separator();
-            if (ImGui::TreeNode("Hello")) { ImGui::BulletText("Sailor"); ImGui::TreePop(); } ImGui::NextColumn();
-            if (ImGui::TreeNode("Bonjour")) { ImGui::BulletText("Marin"); ImGui::TreePop(); } ImGui::NextColumn();
-            ImGui::Columns(1);
-            ImGui::Separator();
-            ImGui::TreePop();
-        }
-        ImGui::PopID();
+        ImGui::Columns(1);
+        ImGui::Separator();
+        ImGui::TreePop();
     }
+
+    // Create multiple items in a same cell before switching to next column
+    if (ImGui::TreeNode("Mixed items"))
+    {
+        ImGui::Columns(3, "mixed");
+        ImGui::Separator();
+
+        ImGui::Text("Hello");
+        ImGui::Button("Banana");
+        ImGui::NextColumn();
+
+        ImGui::Text("ImGui");
+        ImGui::Button("Apple");
+        static float foo = 1.0f;
+        ImGui::InputFloat("red", &foo, 0.05f, 0, "%.3f");
+        ImGui::Text("An extra line here.");
+        ImGui::NextColumn();
+
+        ImGui::Text("Sailor");
+        ImGui::Button("Corniflower");
+        static float bar = 1.0f;
+        ImGui::InputFloat("blue", &bar, 0.05f, 0, "%.3f");
+        ImGui::NextColumn();
+
+        if (ImGui::CollapsingHeader("Category A")) { ImGui::Text("Blah blah blah"); } ImGui::NextColumn();
+        if (ImGui::CollapsingHeader("Category B")) { ImGui::Text("Blah blah blah"); } ImGui::NextColumn();
+        if (ImGui::CollapsingHeader("Category C")) { ImGui::Text("Blah blah blah"); } ImGui::NextColumn();
+        ImGui::Columns(1);
+        ImGui::Separator();
+        ImGui::TreePop();
+    }
+
+    // Word wrapping
+    if (ImGui::TreeNode("Word-wrapping"))
+    {
+        ImGui::Columns(2, "word-wrapping");
+        ImGui::Separator();
+        ImGui::TextWrapped("The quick brown fox jumps over the lazy dog.");
+        ImGui::TextWrapped("Hello Left");
+        ImGui::NextColumn();
+        ImGui::TextWrapped("The quick brown fox jumps over the lazy dog.");
+        ImGui::TextWrapped("Hello Right");
+        ImGui::Columns(1);
+        ImGui::Separator();
+        ImGui::TreePop();
+    }
+
+    if (ImGui::TreeNode("Borders"))
+    {
+        // NB: Future columns API should allow automatic horizontal borders.
+        static bool h_borders = true;
+        static bool v_borders = true;
+        ImGui::Checkbox("horizontal", &h_borders);
+        ImGui::SameLine();
+        ImGui::Checkbox("vertical", &v_borders);
+        ImGui::Columns(4, NULL, v_borders);
+        for (int i = 0; i < 4*3; i++)
+        {
+            if (h_borders && ImGui::GetColumnIndex() == 0)
+                ImGui::Separator();
+            ImGui::Text("%c%c%c", 'a'+i, 'a'+i, 'a'+i);
+            ImGui::Text("Width %.2f\nOffset %.2f", ImGui::GetColumnWidth(), ImGui::GetColumnOffset());
+            ImGui::NextColumn();
+        }
+        ImGui::Columns(1);
+        if (h_borders)
+            ImGui::Separator();
+        ImGui::TreePop();
+    }
+
+    // Scrolling columns
+    /*
+    if (ImGui::TreeNode("Vertical Scrolling"))
+    {
+        ImGui::BeginChild("##header", ImVec2(0, ImGui::GetTextLineHeightWithSpacing()+ImGui::GetStyle().ItemSpacing.y));
+        ImGui::Columns(3);
+        ImGui::Text("ID"); ImGui::NextColumn();
+        ImGui::Text("Name"); ImGui::NextColumn();
+        ImGui::Text("Path"); ImGui::NextColumn();
+        ImGui::Columns(1);
+        ImGui::Separator();
+        ImGui::EndChild();
+        ImGui::BeginChild("##scrollingregion", ImVec2(0, 60));
+        ImGui::Columns(3);
+        for (int i = 0; i < 10; i++)
+        {
+            ImGui::Text("%04d", i); ImGui::NextColumn();
+            ImGui::Text("Foobar"); ImGui::NextColumn();
+            ImGui::Text("/path/foobar/%04d/", i); ImGui::NextColumn();
+        }
+        ImGui::Columns(1);
+        ImGui::EndChild();
+        ImGui::TreePop();
+    }
+    */
+
+    if (ImGui::TreeNode("Horizontal Scrolling"))
+    {
+        ImGui::SetNextWindowContentSize(ImVec2(1500.0f, 0.0f));
+        ImGui::BeginChild("##ScrollingRegion", ImVec2(0, ImGui::GetFontSize() * 20), false, ImGuiWindowFlags_HorizontalScrollbar);
+        ImGui::Columns(10);
+        int ITEMS_COUNT = 2000;
+        ImGuiListClipper clipper(ITEMS_COUNT);  // Also demonstrate using the clipper for large list
+        while (clipper.Step())
+        {
+            for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++)
+                for (int j = 0; j < 10; j++)
+                {
+                    ImGui::Text("Line %d Column %d...", i, j);
+                    ImGui::NextColumn();
+                }
+        }
+        ImGui::Columns(1);
+        ImGui::EndChild();
+        ImGui::TreePop();
+    }
+
+    bool node_open = ImGui::TreeNode("Tree within single cell");
+    ImGui::SameLine(); ShowHelpMarker("NB: Tree node must be poped before ending the cell. There's no storage of state per-cell.");
+    if (node_open)
+    {
+        ImGui::Columns(2, "tree items");
+        ImGui::Separator();
+        if (ImGui::TreeNode("Hello")) { ImGui::BulletText("Sailor"); ImGui::TreePop(); } ImGui::NextColumn();
+        if (ImGui::TreeNode("Bonjour")) { ImGui::BulletText("Marin"); ImGui::TreePop(); } ImGui::NextColumn();
+        ImGui::Columns(1);
+        ImGui::Separator();
+        ImGui::TreePop();
+    }
+    ImGui::PopID();
 }
 
 static void ShowDemoWindowMisc()