#include <windows.h>  // windows程序必须包含的头文件
#include <stdlib.h>

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);//窗口函数说明

//----------------------以下初始化窗口类---------------------

int WINAPI WinMain(HINSTANCE hInstance,
       HINSTANCE hPrevInst,
       LPSTR lpszCmdLine,
       int nCmdShow)   // 程序切入点
{
 HWND hwnd;
 MSG Msg;
 WNDCLASS wndclass;
 char lpszClassName[]="窗口";
 char lpszTitle[]="My_Windows";

 //初始化窗口的属性
 wndclass.style=0;
 wndclass.lpfnWndProc=WndProc;
 wndclass.cbClsExtra=0;
 wndclass.cbWndExtra=0;
 wndclass.hInstance=hInstance;
 wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
 wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
 wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
 wndclass.lpszMenuName=NULL;
 wndclass.lpszClassName=lpszClassName;

 //注册窗口类
 if(!RegisterClass(&wndclass))
 {
  MessageBeep(0);
  return FALSE;
 }

 //创建窗口
 hwnd=CreateWindow(
                lpszClassName,
       lpszTitle,
       WS_OVERLAPPEDWINDOW,
       CW_USEDEFAULT,
       CW_USEDEFAULT,
       CW_USEDEFAULT,
       CW_USEDEFAULT,
       NULL,
       NULL,
       hInstance,
       NULL);

 //显示窗口
 ShowWindow(hwnd,nCmdShow);
 UpdateWindow(hwnd);
 
 //消息循环
  while(GetMessage(&Msg,NULL,0,0))
  {
   TranslateMessage(&Msg);
   DispatchMessage(&Msg);
  }
  return Msg.wParam;
}

//---------------窗口函数---------------
LRESULT CALLBACK WndProc(HWND hwnd,
       UINT message,
       WPARAM wParam,
       LPARAM lParam)
{
 switch(message)
 {
  // 这里可以加好多消息，这个例程什么也没有实现所以只有一个消息分支WM_DESTROY
  case WM_DESTROY:
   PostQuitMessage(0);
  default:
   return DefWindowProc(hwnd,message,wParam,lParam);
 }
 return (0);
}