Path: utzoo!utgpu!water!watmath!clyde!bellcore!faline!thumper!ulysses!andante!mit-eddie!bbn!rochester!udel!gatech!purdue!decwrl!ucbvax!ji.Berkeley.EDU!carlton
From: carlton@ji.Berkeley.EDU.UUCP
Newsgroups: comp.sys.mac.programmer
Subject: Re: What can you assume about the current port?
Message-ID: <24046@ucbvax.BERKELEY.EDU>
Date: 12 May 88 22:31:32 GMT
References: <2799@polya.STANFORD.EDU> <1654@pt.cs.cmu.edu> <314@piring.cwi.nl>
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: carlton@ji.Berkeley.EDU.UUCP (Mike Carlton)
Organization: University of California, Berkeley
Lines: 18
Posted: Thu May 12 18:31:32 1988

In article <314@piring.cwi.nl> guido@cwi.nl (Guido van Rossum) writes:
...
>
>Inside Mac Volume I (is that volume still relevant? :-) says very
>clearly (somewhere at the beginning ofthe QuickDraw chapter) that *all*
>toolbox calls save and restore the port.  This means that if the
...

Don't believe everything you read.  A while ago (> 2 yrs), some of the
low level window manager routines would change the port behind your back.
I think it was PaintBehind or something like that (it has been a while).
This makes sense, since these routines are normally only called from the
high level ones, but when the documentation says ALL, I expected all.  Oh
well.

This may have been fixed by now, I haven't checked recently. 

mike (carlton@ji  or  ...!ucbvax!ji!carlton)