/* 双键的使用 */

 #include <windows.h>

 LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);    

 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,

                    PSTR szCmdLine, int iCmdShow)

 {

     static TCHAR szAppName[] = TEXT ("HelloWin");

     HWND         hwnd;

     MSG          msg;

     WNDCLASS     wndclass;

     wndclass.style              = CS_HREDRAW | CS_VREDRAW  ;

     wndclass.lpfnWndProc        = WndProc ;

     wndclass.cbClsExtra         =  ;

     wndclass.cbWndExtra         =  ;

     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      = szAppName ;

     if(!RegisterClass(&wndclass))

     {

         MessageBox(NULL, TEXT("This program requires Windows NT!"),

             szAppName, MB_ICONERROR);

         return ;

     }

     hwnd = CreateWindow(szAppName,

         TEXT("The Hello Program"),

         WS_OVERLAPPEDWINDOW,

         CW_USEDEFAULT,

         CW_USEDEFAULT,

         CW_USEDEFAULT,

         CW_USEDEFAULT,

         NULL,

         NULL,

         hInstance,

         NULL);

     ShowWindow(hwnd , iCmdShow);

     UpdateWindow(hwnd);

     while(GetMessage (&msg, NULL, , ))

     {

         TranslateMessage(&msg);

         DispatchMessage(&msg);

     }

     return msg.wParam;

 }

 LRESULT CALLBACK WndProc(HWND hwnd , UINT message , WPARAM wParam , LPARAM lParam)

 {

     HDC         hdc;

     PAINTSTRUCT ps;

     RECT        rect;

     switch(message)

     {

     case WM_CREATE:

 //        PlaySound (TEXT ("123.wav"), NULL , SND_FILENAME |SND_ASYNC);

         return ;

     case WM_PAINT:

         hdc = BeginPaint(hwnd , &ps);

         GetClientRect(hwnd, &rect);

         DrawText(hdc , TEXT("Hello Windows 98!") , - ,&rect ,

             DT_SINGLELINE | DT_CENTER | DT_VCENTER);

         EndPaint(hwnd,&ps);

 //        PlaySound (TEXT ("123.wav"), NULL , SND_FILENAME |SND_ASYNC);

         return ;

     case WM_LBUTTONDOWN:

         if(wParam & MK_RBUTTON)

             PlaySound (TEXT ("123.wav"), NULL , SND_FILENAME |SND_ASYNC);

         return ;

     case WM_RBUTTONDOWN:

         if(wParam & MK_LBUTTON)

             PlaySound (TEXT ("123.wav"), NULL , SND_FILENAME |SND_ASYNC);

         return ;

     case WM_DESTROY:

 //        PlaySound (TEXT ("123.wav"), NULL , SND_FILENAME |SND_ASYNC);

         PostQuitMessage();

         return ;

     }

     return DefWindowProc(hwnd,message,wParam,lParam);

 }