WIN32 的框架代码

#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 = 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 ("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 (int)msg.wParam ;


}




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


{


HDC hdc ;


PAINTSTRUCT ps ;


RECT rect ;




switch (message)


{


case WM_PAINT:


hdc = BeginPaint (hwnd, &ps) ;




GetClientRect (hwnd, &rect) ;




DrawText (hdc, TEXT ("Hello, Windows XP!"), -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) ;


}