Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!intercon!news
From: amanda@mermaid.intercon.com (Amanda Walker)
Newsgroups: comp.sys.mac.programmer
Subject: Re: How's the screen cleaned after _SysError?
Message-ID: <1990Feb27.003952.4966@intercon.com>
Date: 27 Feb 90 00:39:52 GMT
References: <34252@news.Think.COM>
Sender: @intercon.com
Reply-To: amanda@mermaid.intercon.com (Amanda Walker)
Organization: InterCon Systems Corporation, Sterling, VA
Lines: 17

In article <34252@news.Think.COM>, ephraim@Think.COM (Ephraim Vishniac) writes:
> Right now, I'm waiting for the
> next call to _GetOSEvent and using _PaintBehind to get the alert rect
> redrawn.  This works, but it's not as smooth as whatever the disk-swap code
> does.

If you know how big your alert is going to be, you could reserve a
bitmap/pixmap and just save the stuff behind the alert before you put it
up, and restore it on your way out...  I believe there was once some code
floating around sumex that did this, called "quickalert" or some such.

--
Amanda Walker
InterCon Systems Corporation

"Many of the truths we cling to depend greatly upon our own point of view."
	--Obi-Wan Kenobi in "Return of the Jedi"