一个简单的windows程序

Posted on 2008-11-07 11:12  少林  阅读(476)  评论(0编辑  收藏

     好久没有用c语言写windows程序了,今天有兴致,写一个权当练练手吧。如果是学vc的话,系统的api还是要理解透的。以后还得多看看"windows 程序设计"的书,提高自己的内功修炼。:)

#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 ;
       
    WNDCLASwndclass ;
       

   wndclass.style        = CS_HREDRAW | CS_VREDRAW ;
       
   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.lpszMenuNam  = NULL ;
       
    wndclass.lpszClassName= szAppName ;
       

    if (!RegisterClass (&wndclass))
       
    {
       
            MessageBox (  NULL, TEXT ("This program requires Windows NT!"),
       
                                  szAppName, MB_ICONERROR) ;
       
            return 0 ;
       
    }
       
    hwnd = CreateWindow( szAppName,      // window class name
       
                   TEXT ("The Hello Program"),   // window caption
       
                   WS_OVERLAPPEDWINDOW,  // window style
       
                   CW_USEDEFAULT,// initial x position
       
                   CW_USEDEFAULT,// initial y position
       
                   CW_USEDEFAULT,// initial x size
       
                   CW_USEDEFAULT,// initial y size
       
                   NULL,                 // parent window handle
       
               NULL,            // window menu handle
       
               hInstance,   // program instance handle
       
               NULL) ;      // creation parameters
       
  
       
    ShowWindow (hwnd, iCmdShow) ;
       
    UpdateWindow (hwnd) ;
       
  
       
    while (GetMessage (&msg, NULL, 0, 0))
       
    {
       
            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 ("hellowin.wav"), NULL, SND_FILENAME | SND_ASYNC) ;
       
            return 0 ;
       

    case   WM_PAINT:
       
            hdc = BeginPaint (hwnd, &ps) ;
       
       
       
            GetClientRect (hwnd, &rect) ;
       
       
       
            DrawText (hdc, TEXT ("Hello, Windows 98!"), -1, &rect,
       
                   DT_SINGLELINE | DT_CENTER | DT_VCENTER) ;
       
                 EndPaint (hwnd, &ps) ;
       
                   return 0 ;
       
       
       
    case   WM_DESTROY:
       
            PostQuitMessage (0) ;
       
            return 0 ;
       
    }
       
  return DefWindowProc (hwnd, message, wParam, lParam) ;
       
}

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