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Re: refreshing drawings

Quoting Eli Barzilay:
> You should override the on-paint event.  The best-looking way is to
> have a bitmap and do every drawing on it and on the window, then have
> on-paint just copy this bitmap.  I think that .../collects/graphics
> have some examples

There's also a little example in the MrEd manual, in the drawing
overview section:

  http://www.cs.rice.edu/CS/PLT/packages/doc/mred/node343.htm

Matthew