HOWTO: Use the GetWindow() Function

ID: Q33161

The information in this article applies to:

Microsoft Windows Software Development Kit (SDK)
Microsoft Win32 Software Development Kit (SDK)
Microsoft Windows 2000

SUMMARY

An application can use the GetWindow function to enumerate the windows that have a specified relationship to another window. For example, an application can determine the windows that are children of the application's main window.

MORE INFORMATION

The GetWindow function returns NULL when no more windows match the specified criteria. Given a window handle, hWnd, the following code determines how many siblings the associated window has:


   int CountSiblings(HWND hWnd)
      {
      HWND hWndNext;
      short nCount = 0;
      hWndNext = GetWindow(hWnd, GW_HWNDFIRST);
      while (hWndNext != NULL)
         {
         nCount++;
         hWndNext = GetWindow(hWndNext, GW_HWNDNEXT);
         }
      return nCount;
      }

Additional query words:

Keywords : kbNTOS kbGrpUser kbWinOS kbWndw
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbhowto