The WindowEx.IsChildWindow function tests whether a window is a child window or descendant window of a specified parent window. A child window is the direct descendant of a specified parent window if that parent window is in the chain of parent windows; the chain of parent windows leads from the original overlapped or pop-up window to the child window.

boolean WindowEx.IsChildWindow(

number hWndParent, --handle of parent window
number hWnd --handle of window to test
);

Parameters

hWndParent

Identifies the parent window.

hWnd

Identifies the window to be tested.

Return Values

If the window is a child or descendant window of the specified parent window, the return value is TRUE.
If the window is not a child or descendant window of the specified parent window, the return value is FALSE.