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From: klee@wsl.dec.com (Ken Lee)
Newsgroups: comp.windows.x
Subject: Re: Is there some way to find out what a BadMatch is about?
Message-ID: <1991Jun24.092426@wsl.dec.com>
Date: 24 Jun 91 16:24:26 GMT
References: <25584@well.sf.ca.us>
Sender: news@pa.dec.com (News)
Reply-To: klee@wsl.dec.com
Organization: DEC Western Software Laboratory
Lines: 24

In article <25584@well.sf.ca.us>, jef@well.sf.ca.us (Jef Poskanzer) writes:
|> I've got this program which works fine on monochrome screens, but
|> when I try running it on a PseudoColor screen I get BadMatch errors
|> from innocuous calls like XDrawPoint and XFillRectangle.  So I was
|> just wondering if anyone has any tricks for finding out what the
|> server thinks doesn't match.  I suppose I could run the server in
|> a debugger, but that's a hassle.
|> 
|> More details: I'm drawing to an off-screen Pixmap created with
|> XCreatePixmapFromBitmapData( display, root, data, width, height, 1L, 0L, 1 ).
|> The GC's I use have foreground and background set to 1L and 0L, and
|> planemask set to 1L.

Sounds like you've got depth mis-match problems.  Are you GCs created
with the same depth as the target drawable?

See "Error 14" in the paper "Behind Curtain X" in this month's *UNIX
Review* magazine :-)

-- 
Ken Lee
DEC Western Software Laboratory, Palo Alto, Calif.
Internet: klee@wsl.dec.com
uucp: uunet!decwrl!klee