LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
switch (message) {
case WM_CREATE:
/* 窗口创建时的消息处理 */
return 0;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
/* 窗口重绘的消息处理 */
EndPaint(hwnd, &ps);
return 0;
case WM_DESTROY:
/* 窗口销毁时的消息处理 */
PostQuitMessage(0);
return 0;
}
/* 默认的窗口过程消息处理 */
return DefWindowProc(hwnd, message, wParam, lParam);
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
LPCTSTR lpszClassName = TEXT("demo");
/* 定义窗口类 */
WNDCLASS wndclass;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hInstance = hInstance;
wndclass.lpszClassName = lpszClassName;
wndclass.lpszMenuName = NULL;
wndclass.lpfnWndProc = WndProc;
wndclass.style = CS_HREDRAW | CS_VREDRAW;
/* 注册窗口类 */
if (!RegisterClass(&wndclass)) {
MessageBox(NULL, TEXT("This Program requires Windows NT!"), lpszClassName, MB_ICONERROR);
return 0;
}
/* 创建窗口 */
HWND hwnd = CreateWindow(
lpszClassName,
TEXT("Demo Window"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL
);
/* 更新显示窗口 */
UpdateWindow(hwnd);
ShowWindow(hwnd, nCmdShow);
/* 消息循环 */
MSG msg;
while (GetMessage(&msg, NULL, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}