From: Ed Redman <ed.redman@...>
Date: 2005-10-18T21:41:57+09:00
Subject: tk - canvas accessing color for each pixel

I would like to access and change the color of any pixel on a Tk/canvas.
I want to be able to scan the canvas and if the color at a certain point
is lets say 'red' then make it 'green". I don't see a point widget for
tkcanvas. Can I do this?

thanks
Ed Redman
ed.redman@dal.ca