Path: utzoo!attcan!uunet!husc6!bloom-beacon!ginsu.apple.COM!davep
From: davep@ginsu.apple.COM
Newsgroups: comp.windows.x
Subject: Re: Finding which windows are under cursor
Message-ID: <8812152343.AA15544@ginsu.apple>
Date: 15 Dec 88 23:43:29 GMT
References: <8812021922.AA13237@EXPO.LCS.MIT.EDU>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 10

>    Is there any way to find what windows are under the cursor (or under any
>    specific point).
>
> Yes, you can use XQueryTree to determine the hierarchy and XGetGeometry
> to determine positioning.

Just scanning old mail here...  In the general case, you probably also 
want to call XGetWindowAttributes and check that the map_state value is
IsViewable to make sure the window is mapped before assuming the 
cursor was positioned in it.