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From: larryo@gtenmc.UUCP (Larry Osterman)
Newsgroups: comp.windows.x
Subject: Changing color map
Message-ID: <880@gtenmc.UUCP>
Date: 21 Sep 90 00:31:00 GMT
Reply-To: larryo@gtenmc.UUCP (Larry Osterman)
Distribution: na
Organization: GTE Telecom, Inc.  Bothell, WA
Lines: 29

We are porting our application from Sun's Sunview window manager 
to the IBM AIX RS6000, running Motif window manager.  We are trying
to make an object "flash" by modifying the default color map.

To make an object "flash", we first change its original color, 
e.g. green, to dark red.  Then we set up a timer of every 1/2 second
that calls a function that will change the index color of that dark
red color to light red in the default color map.  So every object that
references that dark red and light red color, will simultaneously have
its color toggled, which in turn gives the effect of "flashing".

Sun's Sunview window manager would let us modify its color map, 
so the flashing of every object simultaneously works.  But Motif
window manager does not allow us to do that.  So we're looking for
some X lib calls (other than modifying the server source code), or
any other way that would let us modify the default color map, and
continue to let us modify it even when we switch focus to other
windows.  

By the way, we are using V.I. Corporation's DVtools, but there doesn't
seem to be any way to accomplish flashing (other than redrawing the
object, which is downright ugly) with DVtools.

Please reply by email.  I will summarize if demand warrants.


-- 

Larry Osterman / larryo@gtenmc.UUCP / (206) 487-8312