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From: ekberg@asl.dl.nec.COM (Tom Ekberg)
Newsgroups: comp.windows.x
Subject: Re: Colormap dilemma
 > I am currently working on a product that contains two separate X client
 > applications with 128 colors each (same 128 colors for both applications).
 > These 128 colors have to be settable (read/write) by the application.  These
Message-ID: <9103131508.AA10796@aslss01.asl.dl.nec.com>
Date: 13 Mar 91 15:08:55 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 14

Since you state that both applications use the same 128 colors, why not share
the cells in the colormap.  More than one client can use a color cell, even if
it is settable.  In chapter 5 of the Xlib manual it states:

	Although you can change the values in a read/write color cell that is
	allocated by another application, this is considered ``antisocial''
	behavior.

The idea is to have one client try to allocate 128 colors.  If it fails, it
would look to see if the other client already allocated its colors, and then
use those.  By having the two applications cooporate you should be able to get
by with needing only 128 color cells.

  -- tom, ekberg@asl.dl.nec.com (x3503)