[plt-scheme] How to do flickerless update for MrEd widget changes?

From: Danny Yoo (dyoo at cs.wpi.edu)
Date: Mon Sep 22 11:21:35 EDT 2008

Hi everyone,

I'm writing a program that occasionally removes all of the children
from a frame and repopulates its contents with new widgets.  At the
moment, the screen flickers quite a bit and the user is exposed to the
intermediate state of the frame.  I'd like to have something like
begin-edit-sequence that works on arbitrary area containers.  Is there
such a beast?  Any help would be appreciated.

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