imgui/backends/imgui_impl_osx.h

// dear imgui: Platform Backend for OSX / Cocoa
// This needs to be used along with a Renderer (e.g. OpenGL2, OpenGL3, Vulkan, Metal..)
// - Not well tested. If you want a portable application, prefer using the GLFW or SDL platform Backends on Mac.
// - Requires linking with the GameController framework ("-framework GameController").

// Implemented features:
//  [X] Platform: Clipboard support is part of core Dear ImGui (no specific code in this backend).
//  [X] Platform: Mouse support. Can discriminate Mouse/Pen.
//  [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy kVK_* values are obsolete since 1.87 and not supported since 1.91.5]
//  [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
//  [X] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors). Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
//  [X] Platform: IME support.
//  [x] Platform: Multi-viewport / platform windows.
// Issues:
//  [ ] Platform: Multi-viewport: Window size not correctly reported when enabling io.ConfigViewportsNoDecoration
//  [ ] Platform: Multi-viewport: ParentViewportID not honored, and so io.ConfigViewportsNoDefaultParent has no effect (minor).

// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
// Learn about Dear ImGui:
// - FAQ                  https://dearimgui.com/faq
// - Getting Started      https://dearimgui.com/getting-started
// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
// - Introduction, links and more at the top of imgui.cpp

#include "imgui.h"      // IMGUI_IMPL_API
#ifndef IMGUI_DISABLE

#ifdef __OBJC__

@class NSEvent;
@class NSView;

// Follow "Getting Started" link and check examples/ folder to learn about using backends!
IMGUI_IMPL_API bool     ImGui_ImplOSX_Init(NSView* _Nonnull view);
IMGUI_IMPL_API void     ImGui_ImplOSX_Shutdown();
IMGUI_IMPL_API void     ImGui_ImplOSX_NewFrame(NSView* _Nullable view);

#endif

//-----------------------------------------------------------------------------
// C++ API
//-----------------------------------------------------------------------------

#ifdef IMGUI_IMPL_METAL_CPP_EXTENSIONS
// #include <AppKit/AppKit.hpp>
#ifndef __OBJC__

// Follow "Getting Started" link and check examples/ folder to learn about using backends!
IMGUI_IMPL_API bool     ImGui_ImplOSX_Init(void* _Nonnull view);
IMGUI_IMPL_API void     ImGui_ImplOSX_Shutdown();
IMGUI_IMPL_API void     ImGui_ImplOSX_NewFrame(void* _Nullable view);

#endif
#endif

#endif // #ifndef IMGUI_DISABLE