On Jun 13, 2012, at 3:16 PM, Hillary Ryan wrote:

> I have a bunch (two dozen) of little objects that I would like to be able to 
> draw on one canvas. At the moment I am passing each object the drawing 
> context which comes from the canvas, letting the object draw itself and then 
> moving onto the next object. By this method, if one object changes I have to 
> redraw the entire canvas. I know in Java you can redraw only part of the 
> canvas. Is there a standard method in Racket for drawing a bunch of objects 
> on a canvas efficiently?

Yes if I understand your question correctly, but you have to go a little bit 
deeper in the GUI toolbox. 

____________________
  Racket Users list:
  http://lists.racket-lang.org/users

Reply via email to