Graphical User Interface(GUI)

Modern GUI composition of:

Windowing System/Compositor
- Quartz Compositor(OSX)
- Desktop Window Manager(Windows)
- X11(Linux)
- Wayland(Linux)
- SurfaceFlinger(Android)
Graphic Rendering
- Hardware-Accelerated Rendering
  - OpenGL
  - Vulkan
  - DirectX
- Software Rendering
  - QT Rasterization Engine

Windowing System

It's very essential to apply the native Windowing System library for Cross-platform GUI framework in different platforms. Here's a cue from including native windowing system headers from GLFW

#if !defined(GLFW_NATIVE_INCLUDE_NONE)
 #if defined(GLFW_EXPOSE_NATIVE_WIN32) || defined(GLFW_EXPOSE_NATIVE_WGL)
  /* This is a workaround for the fact that glfw3.h needs to export APIENTRY (for
   * example to allow applications to correctly declare a GL_KHR_debug callback)
   * but windows.h assumes no one will define APIENTRY before it does
   */
  #if defined(GLFW_APIENTRY_DEFINED)
   #undef APIENTRY
   #undef GLFW_APIENTRY_DEFINED
  #endif
  #include <windows.h>
 #elif defined(GLFW_EXPOSE_NATIVE_COCOA) || defined(GLFW_EXPOSE_NATIVE_NSGL)
  #if defined(__OBJC__)
   #import <Cocoa/Cocoa.h>
  #else
   #include <ApplicationServices/ApplicationServices.h>
   #include <objc/objc.h>
  #endif
 #elif defined(GLFW_EXPOSE_NATIVE_X11) || defined(GLFW_EXPOSE_NATIVE_GLX)
  #include <X11/Xlib.h>
  #include <X11/extensions/Xrandr.h>
 #elif defined(GLFW_EXPOSE_NATIVE_WAYLAND)
  #include <wayland-client.h>
 #endif