#032 case WM_PAINT: #033 hdc = BeginPaint(hWnd, &ps); #034 // #035 EndPaint(hWnd, &ps); #036 break; #037 case WM_DESTROY: #038 PostQuitMessage(0); #039 break; #040 default: #041 return DefWindowProc(hWnd, message, wParam, lParam); #042 } #043 return 0; #044 } 第8行定义...
// Parse the menu selections: switch (wmId) { case IDM_ABOUT: DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About); break; case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } break; case WM_PAINT: hdc = BeginPaint(hWnd,...
#032 case WM_PAINT: #033 hdc = BeginPaint(hWnd, &ps); #034 // #035 EndPaint(hWnd, &ps); #036 break; #037 case WM_DESTROY: #038 PostQuitMessage(0); #039 break; //这里我加一个消息WM_NOTIFY通知一个控件的父窗口:一个消息在这个控件上上产生了。 case WM_NOTIFY: { //我们在这里接收...
LRESULT DefWindowProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);其中，hWnd参数代表窗口的句柄，这是用来标识窗口的唯一标识符。Msg参数表示接收到的消息类型，包括诸如WM_PAINT、WM_SIZE等众多预定义的消息。wParam和lParam则是传递给窗口过程的附加参数，用于携带更详细的信息。总的来说，DefW...
WndProc函数根据接收到的消息类型进行不同的响应。例如，当窗口创建时（WM_CREATE），播放一个名为"hellowin.wav"的音频文件。当窗口需要重绘（WM_PAINT）时，会获取客户端区域的矩形，然后绘制文本。窗口关闭（WM_DESTROY）时，发送一个退出消息。LRESULT CALLBACK WndProc(HWND hwnd, UINT message, ...
case WM_PAINT: // Paint the window's client area. return 0; case WM_SIZE: // Set the size and position of the window. return 0; case WM_DESTROY: // Clean up window-specific data objects. return 0; // // Process other messages. ...
caseWM_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 ("Hello, Windows 98!"), -1, &rect, ...
#032caseWM_PAINT: #033hdc = BeginPaint(hWnd, &ps); #034//#035EndPaint(hWnd, &ps); #036break; #037caseWM_DESTROY: #038PostQuitMessage(0); #039break; #040default: #041returnDefWindowProc(hWnd, message, wParam, lParam); #042}
#032 case WM_PAINT: #033 hdc = BeginPaint(hWnd, &ps); #034 // #035 EndPaint(hWnd, &ps); #036 break; #037 case WM_DESTROY: #038 PostQuitMessage(0); #039 break; #040 default: #041 return DefWindowProc(hWnd, message, wParam, lParam); ...