一个简单的剪贴板浏览器.doc

一个简单的剪贴板浏览器 剪贴板浏览器不一定要像Windows所提供的那样完善，例如，剪贴板浏览器可以只显示一种剪贴板数据格式。程序12-2中所示的CLIPVIEW程序是一种只能显示CF_TEXT格式的剪贴板浏览器。 程序12-2 CLIPVIEWCLIPVIEW.C #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 (ClipView) ; 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 (Simple Clipboard Viewer (Text Only)), 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 lPara