Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!bloom-beacon!ATHENA.MIT.EDU!swick
From: swick@ATHENA.MIT.EDU (Ralph R. Swick)
Newsgroups: comp.windows.x
Subject: Re: Using backing store from Xt?
Message-ID: <8907141443.AA13412@LYRE.MIT.EDU>
Date: 14 Jul 89 14:43:41 GMT
References: <19544@paris.ics.uci.edu>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: DEC/MIT Project Athena
Lines: 11

> How can I tell programs like xmh to use backing store when creating all
> of their widgits?  Furthermore, how could anyone even tell the Xt
> library routines to use backing store when creating *any* widget?  I
> would have expected something like "XtNbackingstore" but there isn't
> anything like that which I can find.  What's the deal?

The deal is that each widget class which believes that backing store
might be useful for it has to add the resource.  (How would you like
your swap space filled up with backing store for Shells, Boxes, Forms,
and Viewports?).  None of the Xaw widgets have such a resource, so
w.r.t. xmh you're out of luck.  It's probably a good idea, though.