Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!emory!att!pacbell.com!pacbell!well!oster
From: oster@well.sf.ca.us (David Phillip Oster)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Advice on icon animation wanted
Message-ID: <22263@well.sf.ca.us>
Date: 20 Dec 90 06:59:41 GMT
References: <47444@apple.Apple.COM> <1119@babcock.cerc.wvu.wvnet.edu> <47454@apple.Apple.COM>
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 10

Steve, you said you can't draw at interrupt time because Quickdraw references
the rgnHandle field of the grafPort, and if the Memory Manager is shuffling
the heap, those may not be valid. Is there any reason why my interrupt
routine can't have a PRIVATE heap, and have the grafport and its regions
allocated inside that? If the interrupt routine's drawing is the only
thing using that heap, it can never be in an invalid state during interrupt
drawing.
-- 
-- David Phillip Oster - At least the government doesn't make death worse.
-- oster@well.sf.ca.us = {backbone}!well!oster