|
楼主 |
发表于 2019-7-19 21:52:41
|
显示全部楼层
- #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,
- 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, 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 MWM_PAINT:
- hdc = BeginPaint(hwnd, &ps);
- GetClientRect(hwnd,&rect);
- DrawText(hdc,TEXT("hello,windows!"),-1,&rect,
- DT_SINGLELINE|DT_CENTER|DT_VCENTER);
- EndPaint (hwnd,&ps);
- return 0;
- case MWM_DESTROY:
- PostQuitMessage(0);
- return 0;
- }
- return DefWindowProc(hwnd,message,wParam,lParam);
- }
复制代码
switch 里的 MWM_PAINT 和 MWM_DESTROY 未定义标识符
|
|