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From: klee@wsl.dec.com (Ken Lee)
Newsgroups: comp.windows.x
Subject: Re: XGetWindowAttributes
Keywords: X, Background Attribute
Message-ID: <1990Dec21.105527@wsl.dec.com>
Date: 21 Dec 90 18:55:27 GMT
References: <726@skipper.dfrf.nasa.gov>
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Reply-To: klee@wsl.dec.com
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Organization: DEC Western Software Laboratory
Lines: 19

In article <726@skipper.dfrf.nasa.gov>, disbrow@skipper.dfrf.nasa.gov (Jim Disbrow) writes:
|> I'm having trouble getting the windows background pixel value.
|> We've tried XGetWindowAttributes, but no luck.
|> Has anyone else needed to find out the background or foreground color?


You cannot retrieve a window's background pixel, background pixmap,
border pixel, or border pixmap.  Foreground color is not a window
attribute.  The rational behind this is that the current design allows
a server to store the information much more efficiently.  You can
attempt to retrieve the background pixel with XGetImage (possibly
preceded by XClearArea), but this is not guaranteed to be the same as
the background pixel.

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