Path: utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!bloom-beacon!EXPO.LCS.MIT.EDU!rws
From: rws@EXPO.LCS.MIT.EDU (Bob Scheifler)
Newsgroups: comp.windows.x
Subject: Re: default font id
Message-ID: <8812091316.AA06843@EXPO.LCS.MIT.EDU>
Date: 9 Dec 88 13:16:07 GMT
References: <289@stan.com>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 13


    I understand I'm not supposed to reach into the guts of the X structures.
    The code in question is in a toolkit, not an application.

A toolkit is part of the application, looking out from Xlib.  You've simply
isolated the no-no.

    If a client/toolkit is trying to reuse a gc, changing only those quantities
    which are different, it must somehow be able to restore a font to the
    server default.  Is there an accepted way to do this?

You can use XCopyGC to copy it back from a GC known to have the default font.
A bit gross, I agree.  Would have been nicer to provide a special value for
doing this.