Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!apple!well!jef
From: jef@well.sf.ca.us (Jef Poskanzer)
Newsgroups: comp.windows.x
Subject: Re: Is there some way to find out what a BadMatch is about?
Message-ID: <25654@well.sf.ca.us>
Date: 24 Jun 91 19:26:44 GMT
References: <1991Jun24.092426@wsl.dec.com>
Reply-To: Jef Poskanzer <jef@well.sf.ca.us>
Organization: Acme Software
Lines: 19

In the referenced message, klee@wsl.dec.com wrote:
}Sounds like you've got depth mis-match problems.  Are you GCs created
}with the same depth as the target drawable?

Yes, that's the consensus.  Apparently GC's have depth as an invisible
attribute.  You can't query it, you can't change it, it's only documented
in the protocol spec, but if it doesn't match your program aborts.  God I
love X.

I'll try this fix next time I'm in front of a color screen.  On the
broader question of how to figure out what the server is complaining
about in cases like this, I have received one suggestion to use xscope.
I tried it, it doesn't work, and I don't see how it would help anyway
since I already know what X request is failing.
---
Jef

  Jef Poskanzer  jef@well.sf.ca.us  {apple, ucbvax, hplabs}!well!jef
        "Youth doesn't excuse everything." -- Dr. Janice Lester