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From: swick@ATHENA.MIT.EDU (Ralph R. Swick)
Newsgroups: comp.windows.x
Subject: Re: intercepting a call to XtAddCallback
Message-ID: <8911071500.AA17723@LYRE.MIT.EDU>
Date: 7 Nov 89 15:00:21 GMT
References: <1792@gazette.bcm.tmc.edu>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: DEC/MIT Project Athena
Lines: 6

> Is there any way for a widget to intercept a call to XtAddCallback
> and re-direct it to another widget?

No, but you can declare your own callback procedure to (re-)
invoke your own callback list(s) and register this procedure on the
other widget.  This effectively wraps the (child) callback list.