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From: grendel@opos.arc.nasa.gov (Raymond E. Suorsa)
Newsgroups: comp.windows.x
Subject: Simple color question
Keywords: color DrawingAreaWidget resources
Message-ID: <1991Apr22.181808.12456@riacs.edu>
Date: 22 Apr 91 18:18:08 GMT
Sender: news@riacs.edu
Reply-To: grendel@opos.arc.nasa.gov
Organization: NASA Ames
Lines: 24


I have a simple X11R4 patch 18, program for visualizing some data.  My
program reads a 256 slot color map from the disk, compresses it to 64
slots, and then uses calls to XAllocColor to build up the color map.
This works fine.

I am using the drawingAreaWidget to do my rendering.

My question: when I use the resources to change the background color
of a widgets in my program (namely for the drawingAreaWidget) how do
I ask for that color so I may use it as the background color in my
display/drawing routines?

The widget hierarchy:

toplevel            -----XTess
  draw_form         -----formWidgetClass
     quit           -----commandWidgetClass
     draw_area      -----drawingAreaWidgetClass
     draw_messg     -----labelWidgetClass

-- 
Ray Suorsa, grendel@opos.arc.nasa.gov,
NASA Ames Research Center,USA (415) 604-6334, Fax x3950