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From: mikeoro@hubcap.clemson.edu (Michael K O'Rourke)
Newsgroups: comp.sys.mac.programmer
Subject: CDEF question
Message-ID: <7470@hubcap.clemson.edu>
Date: 16 Dec 89 04:11:41 GMT
Organization: Clemson University, Clemson, SC
Lines: 12

I am finishing up a CDEF that i have created and have a question about the
draw routine for the CDEF.

Is it very advantageous to reset the ClipRgn to be the area of my control when
it redraws itself?  Will that actually speed things up?  If so, is it even 
better to set the clipRgn to the intersection of the old clip and my control?

Currently I do the latter, but i don't know if this is really that   
advantageous or possibly detremental to the performance of my CDEF.

Thanx,
Michael