Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!umich!yale!mintaka!bloom-beacon!LARRY.MCRCIM.MCGILL.EDU!mouse
From: mouse@LARRY.MCRCIM.MCGILL.EDU (der Mouse)
Newsgroups: comp.windows.x
Subject: Re:  Button Press Events
Message-ID: <9002160226.AA17976@Larry.McRCIM.McGill.EDU>
Date: 16 Feb 90 02:26:18 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 17

> Can someone please mail or post the reason only one client is allowed
> to receive a window's button events while more than one can receive
> key and expose events?  Curious.

That had me baffled for a while too.  However, if you read the doc
carefully, you'll find that pressing a button starts a passive grab.
The limitation to one client sidesteps the question of in which
client's name this grab is started.

(The reason behind this passive grab is not clear to me.  I see no
particular benefit to it, and it does cause this peculiar restriction
on ButtonPress event selection.)

					der Mouse

			old: mcgill-vision!mouse
			new: mouse@larry.mcrcim.mcgill.edu