[plt-scheme] custom widgets in mred

From: Martin DeMello (martindemello at gmail.com)
Date: Wed Apr 16 20:07:48 EDT 2008

Can someone give me minimal examples of (a) a custom widget based on
drawing onto a canvas and (b) a custom widget based on composing
existing widgets? I've hunted through the docs but there's no obvious,
beginner-friendly "this is how you do it" code or howtos.

martin


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