The GetTopWindow function examines the Z order of the child windows associated with the specified parent window and retrieves the handle of the child window at the top of the Z order.
HWND GetTopWindow(
| HWND hWnd | // handle of parent window |
| ); |
Parameters
hWnd
Identifies the parent window whose child windows are to be examined. If this parameter is NULL, the function returns a handle of the window at the top of the Z order.
Return Values
If the function succeeds, the return value is the handle of the child window at the top of the Z order. If the specified window has no child windows, the return value is NULL. To get extended error information, use the GetLastError function.
See Also