在WinApi中点击外部点击

Question

我正在使用C ++在原始WinApi中编写应用程序。我从开始写自己的控件。当鼠标按钮在特定HWND之外单击时，我需要获取信息。在WinApi中是否有任何构建机制来执行此类操作，或者我需要编写自己的逻辑？

Answer 1

    #define IDM_FILE_NEW 21
    #define IDM_FILE_OPEN 44
    #define IDM_FILE_QUIT 88

    case WM_RBUTTONUP:
   {
    HNENU hMenu;
    POINT point;

     point.x = LOWORD(lParam);
      point.y = HIWORD(lParam);

      hMenu = CreatePopupMenu();
      ClientToScreen(hwnd, &point);

      AppendMenuW(hMenu, MF_STRING, IDM_FILE_NEW, 
      L"&New");
      AppendMenuW(hMenu, MF_STRING, IDM_FILE_OPEN, 
     L"&Open");
      AppendMenuW(hMenu, MF_SEPARATOR, 0, NULL);
      AppendMenuW(hMenu, MF_STRING, IDM_FILE_QUIT, 
       L"&Quit");

      TrackPopupMenu(hMenu, TPM_RIGHTBUTTON, 
        point.x, point.y, 0, hwnd, NULL);
      DestroyMenu(hMenu);
     }
      break;