commit 378035c6ff4a0cbd92140a4b39e41dbd0ba915be
author Egor Yusov <egor.yusov@gmail.com> Mon Sep 30 21:16:30 2019 -0700
committer omar <omarcornut@gmail.com> Fri Oct 11 14:17:07 2019 +0200
tree b50ded32c42a56cbe29fe46aa859dad89c05d10e
parent bf746c4215b92b764a7101b8673d24beb3e0c996

Fixed backspace handling on MacOS (fixed https://github.com/ocornut/imgui/issues/2817).
Allow null view passing as parameter to ImGui_ImplOSX_NewFrame

examples/imgui_impl_osx.h

diff --git a/examples/imgui_impl_osx.h b/examples/imgui_impl_osx.h
index 66df252..fe066ee 100644
--- a/examples/imgui_impl_osx.h
+++ b/examples/imgui_impl_osx.h
@@ -13,5 +13,5 @@
 
 IMGUI_API bool        ImGui_ImplOSX_Init();
 IMGUI_API void        ImGui_ImplOSX_Shutdown();
-IMGUI_API void        ImGui_ImplOSX_NewFrame(NSView *_Nonnull view);
+IMGUI_API void        ImGui_ImplOSX_NewFrame(NSView *_Nullable view);
 IMGUI_API bool        ImGui_ImplOSX_HandleEvent(NSEvent *_Nonnull event, NSView *_Nullable view);

examples/imgui_impl_osx.mm

diff --git a/examples/imgui_impl_osx.mm b/examples/imgui_impl_osx.mm
index 9042e15..fd548bf 100644
--- a/examples/imgui_impl_osx.mm
+++ b/examples/imgui_impl_osx.mm
@@ -150,9 +150,12 @@
 {
     // Setup display size
     ImGuiIO& io = ImGui::GetIO();
-    const float dpi = [view.window backingScaleFactor];
-    io.DisplaySize = ImVec2((float)view.bounds.size.width, (float)view.bounds.size.height);
-    io.DisplayFramebufferScale = ImVec2(dpi, dpi);
+    if (view)
+    {
+        const float dpi = [view.window backingScaleFactor];
+        io.DisplaySize = ImVec2((float)view.bounds.size.width, (float)view.bounds.size.height);
+        io.DisplayFramebufferScale = ImVec2(dpi, dpi);
+    }
 
     // Setup time step
     if (g_Time == 0.0)
@@ -250,7 +253,7 @@
         for (int i = 0; i < len; i++)
         {
             int c = [str characterAtIndex:i];
-            if (!io.KeyCtrl && !(c >= 0xF700 && c <= 0xFFFF))
+            if (!io.KeyCtrl && !((c >= 0xF700 && c <= 0xFFFF) || c == 127))
                 io.AddInputCharacter((unsigned int)c);
 
             // We must reset in case we're pressing a sequence of special keys while keeping the command pressed