Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!mailrus!ncar!boulder!stan!garya
From: garya@stan.com (Gary Aitken)
Newsgroups: comp.windows.x
Subject: default font id
Message-ID: <288@stan.com>
Date: 7 Dec 88 02:14:24 GMT
Organization: Solbourne Computer Inc., Longmont, Co.
Lines: 24

Is there a good reason that the font identifier in the font structure
returned from
	fontp = XQueryFont(dpy,XDefaultGC(dpy,scn))->gid) ;
is not a valid font id?

xterm (and how many other clients??) specifically avoids setting the font
when it has to use the default font info.

In addition, attempting to extract the font identifier for a default gc
returns a 0xffffffff, which sometimes is accepted as a valid font
identifier and sometimes is rejected:
 XGCValues gcvalues ;
 gcvalues.font = XDefaultGCOfScreen(XDefaultScreenOfDisplay(dpy))->values.font ;
 XChangeGC(dpy,existing_gc,GCFont,&gcvalues) ;
When this fails, the error is always the same:
X Protocol error:  BadFont, invalid Font parameter
  Major opcode of failed request:  56 (X_ChangeGC)
  Minor opcode of failed request:  0
  Resource id in failed request:  0xffffffff
But when it succeeds, the value used is the same, 0xffffffff.

Sun3, 4.2, V11R3

Gary Aitken
ncar!boulder!stan!garya