Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!decwrl!asente
From: asente@decwrl.dec.com (Paul Asente)
Newsgroups: comp.windows.x
Subject: Re: A Call for Callforwards...
Keywords: Xt Toolkit
Message-ID: <1530@bacchus.dec.com>
Date: 26 Jun 89 15:47:17 GMT
References: <8906260010.AA16100@bu-cs.BU.EDU>
Organization: DEC Western Software Lab
Lines: 14

In article <8906260010.AA16100@bu-cs.BU.EDU> bzs@BU-CS.BU.EDU (Barry Shein) writes:
>In implementing Xt widgets I have run across a need for something
>similar which I shall refer to as "Callforward" functions: A function
>called by the widget for the sole purpose of getting information from
>the application that the widget can not (or should not) generate for
>itself.

You can do this now, using the call_data parameter.  There's nothing to
prevent a callback function from filling in some fields in call_data
before returning and having the widget implementation look at the data
that was passed back.

	-paul asente
	    asente@decwrl.dec.com	decwrl!asente