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000185_icon-group-sender _Wed Aug 14 11:02:38 1996.msg
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Received: by cheltenham.cs.arizona.edu; Wed, 14 Aug 1996 13:12:12 MST
Date: Wed, 14 Aug 1996 11:02:38 -0500
From: jeffery@dragon.cs.utsa.edu (Clinton Jeffery)
Message-Id: <9608141602.AA00042@water.cs.utsa.edu>
To: rjhare@ed.ac.uk
Cc: icon-group@cs.arizona.edu
In-Reply-To: <9608141104.aa01335@uk.ac.ed.tattoo> (message from R J Hare on 14 Aug 96 11:04:00 BST)
Subject: Re: Problem with graphics
Content-Length: 876
Errors-To: icon-group-errors@cs.arizona.edu
Status: O
[Roger Hare writes:]
> I wish to superimpose a dashed grid on my window to use as a guide for the
> positioning of objects (and some text) to be drawn in the window. When I
> save the window, I do not want the positioning grid to be part of the saved
> image. I cannot redraw the grid with "drawop=reverse" because that may well
> 'undraw' some components of the objects I have drawn. Any thoughts about how
> to do this please?
One brute force way would be to draw your image identically on an on-screen
window with a grid, and on an off-screen window ("canvas=hidden") without a
grid. When you save, save the off-screen version. This seems like the best
solution as long as you can spare the memory.
Clint Jeffery
jeffery@ringer.cs.utsa.edu
Division of Computer Science
The University of Texas at San Antonio
Research http://www.cs.utsa.edu/research/plss.html