IO: Renamed InputCharacters[], marked internal as was always intended. AddInputCharacter() goes into a queue which can receive as many characters as needed during the frame. This is useful for automation to not have an upper limit on typing speed. Will later transition key/mouse to use the event queue later.

imgui.h

@@ -1353,13 +1353,12 @@ struct ImGuiIO
     bool        KeyAlt;                         // Keyboard modifier pressed: Alt
     bool        KeySuper;                       // Keyboard modifier pressed: Cmd/Super/Windows
     bool        KeysDown[512];                  // Keyboard keys that are pressed (ideally left in the "native" order your engine has access to keyboard keys, so you can use your own defines/enums for keys).
-    ImWchar     InputCharacters[16+1];          // List of characters input (translated by user from keypress+keyboard state). Fill using AddInputCharacter() helper.
     float       NavInputs[ImGuiNavInput_COUNT]; // Gamepad inputs. Cleared back to zero by EndFrame(). Keyboard keys will be auto-mapped and be written here by NewFrame().
 
     // Functions
-    IMGUI_API void  AddInputCharacter(ImWchar c);                       // Add new character into InputCharacters[]
-    IMGUI_API void  AddInputCharactersUTF8(const char* utf8_chars);     // Add new characters into InputCharacters[] from an UTF-8 string
-    inline void     ClearInputCharacters() { InputCharacters[0] = 0; }  // Clear the text input buffer manually
+    IMGUI_API void  AddInputCharacter(ImWchar c);               // Queue new character input 
+    IMGUI_API void  AddInputCharactersUTF8(const char* str);    // Queue new characters input from an UTF-8 string
+    IMGUI_API void  ClearInputCharacters();                     // Clear the text input buffer manually
 
     //------------------------------------------------------------------
     // Output - Retrieve after calling NewFrame()
@@ -1399,6 +1398,7 @@ struct ImGuiIO
     float       KeysDownDurationPrev[512];      // Previous duration the key has been down
     float       NavInputsDownDuration[ImGuiNavInput_COUNT];
     float       NavInputsDownDurationPrev[ImGuiNavInput_COUNT];
+    ImVector<ImWchar> InputQueueCharacters;     // Queue of _characters_ input (obtained by platform back-end). Fill using AddInputCharacter() helper.
 
     IMGUI_API   ImGuiIO();
 };