Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!pasteur!buddy.Berkeley.EDU!deboor
From: deboor@buddy.Berkeley.EDU (Adam R de Boor)
Newsgroups: comp.windows.x
Subject: Re: Subclassing the Athena Widgets
Message-ID: <16059@pasteur.Berkeley.EDU>
Date: 4 Aug 89 21:01:38 GMT
References: <9975@csli.Stanford.EDU>
Sender: news@pasteur.Berkeley.EDU
Reply-To: deboor@buddy.Berkeley.EDU.UUCP (Adam R de Boor)
Organization: University of California, Berkeley
Lines: 14


You should subclass off of Command. If you don't need to do anything special
for Expose, you can just fill the slot with XtInheritExpose.
If you do need to do something a little different, but want to use what your
superclass does, the object-oriented buzzword you want is "to call your
superclass", as:

	(* toggleWidgetClass->superclass->expose) (w, event, region)

either before or after you've done your bit, whatever it may be.

Similar things can be done for all other "methods".

a