定义第一个窗口

#include "tchar.h"
#include <windows.h>
//回调函数
LRESULT CALLBACK winproc(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{

    switch (uMsg)
    {
   case WM_CLOSE:

   {
       ::DestroyWindow(hWnd);
   }
       break;
   case WM_DESTROY:
   {
       PostQuitMessage(NULL);
   }break;
   }

return DefWindowProc(hWnd, uMsg, wParam, lParam);

}

int WINAPI _tWinMain(
//#ifdef _UNICODE
//#define _tWinMain wWinMain
//#else
//#define _tWinMAin WinMain
   _In_ HINSTANCE hInstance,
   _In_opt_ HINSTANCE hPrevInstance,
   _In_ LPTSTR lpCmdLine,
   _In_ int nShowCmd)
{
   WNDCLASSEX wcex;
   //设计窗口

   wcex.cbSize = sizeof(WNDCLASSEX); //窗口的大小
   wcex.style = CS_HREDRAW | CS_VREDRAW | CS_BYTEALIGNCLIENT; //窗口的风格
   wcex.lpfnWndProc = winproc; //消息处理函数，窗口处理指针
   wcex.cbClsExtra = 0; //窗口类结构后的附加字节数
   wcex.cbWndExtra = 0; //窗口事例后的附加字数
   wcex.hInstance = hInstance; //实例句柄
   wcex.hIcon = ::LoadIcon(NULL, MAKEINTRESOURCE(IDI_QUESTION)); //图标的句柄 makeintresouce数字形ID",转化为"字符串
   wcex.hCursor = ::LoadCursor(NULL, MAKEINTRESOURCE(IDC_HAND)); //光标的句柄
   //wcex.hCursor = LoadCursor(NULL, IDC_ARROW); //光标的句柄
   wcex.hbrBackground = (HBRUSH)(COLOR_CAPTIONTEXT); //背景画刷的句柄
   wcex.lpszMenuName = NULL; //指向菜单的指针
   wcex.lpszClassName = _T("name"); //类别名称的指针
   wcex.hIconSm = ::LoadIcon(NULL, IDI_APPLICATION); //窗口类关联的小图标

   //2.注册窗口
   BOOL bret = ::RegisterClassEx(&wcex);//窗口对象的地址
   if (!bret)
   {
       MessageBox(NULL,_T("注册失败"),_T("注册窗口"),0);//MB_OK
   }
   //3创建窗口
   HWND hWnd = ::CreateWindowEx(0, wcex.lpszClassName,
       _T("窗口"), WS_VISIBLE|WS_OVERLAPPEDWINDOW,
       CW_USEDEFAULT,CW_USEDEFAULT,
       CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);//扩展窗口风格，窗口类名，窗口名，窗口风格，

   //4显示更新窗口
   ::ShowWindow(hWnd, SW_SHOW);
   ::UpdateWindow(hWnd);

   //5消息循环
   MSG msg;
   while (::GetMessage(&msg,hWnd,NULL,NULL))
   {
       ::TranslateMessage(&msg);
       ::DispatchMessage(&msg);//派遣消息

}

return 0;
}

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