Xref: utzoo comp.windows.x:33056 comp.windows.open-look:654
Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!wuarchive!zazen!uwvax!astroatc!vidiot!ftms!brown
From: brown@ftms.UUCP (Vidiot)
Newsgroups: comp.windows.x,comp.windows.open-look
Subject: Xor'ing of colors problems
Message-ID: <26@ftms.UUCP>
Date: 20 Feb 91 23:01:34 GMT
Reply-To: brown@ftms.UUCP (Vidiot)
Organization: Vidiot's Other Hangout
Lines: 23


We are using OpenLook under SunOS 4.1.  The programmer is using the GXxor
function in the graphics context for Xlib calls.  We get the following results:

	draw color	background	result		expect

	black		black		white		black
	white		white		tan(?)		black
	red		red		white		black
	red		blue		aquamarine(?)/	magenta
					cyan
	blue		blue		white		black

Can someone explain why we are not getting the expected results?  Is there
a formula that can be used to determine ahead of time what the results will
be?

Thanks in advance.
-- 
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