我的二级VC窗口

#include
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
struct
{
 int     iStyle ;
 TCHAR *   szText ;
}
button[] =
{
 BS_PUSHBUTTON,        TEXT ("子窗口"),
} ;
#define NUM (sizeof button / sizeof button[0])

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   = 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 = szAppName ;
 
 if (!RegisterClass (&wndclass))
 {
  MessageBox ( NULL, TEXT ("This program requires Windows NT!"),
   szAppName, MB_ICONERROR) ;
  return 0 ;
 }
 hwnd = CreateWindow( szAppName, // window class name
  TEXT ("QQ 2010  正式版"), // 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) ;
 
 hwnd = CreateWindow ( szAppName, TEXT ("子窗口"),
  WS_OVERLAPPEDWINDOW,
  CW_USEDEFAULT, CW_USEDEFAULT,
  CW_USEDEFAULT, CW_USEDEFAULT,
  NULL, NULL, hInstance, NULL) ;
 
 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 ("账号："), 6, &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) ;
}