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From: bazyar@ernie (Jawaid Bazyar)
Newsgroups: comp.sys.apple2
Subject: Re: updating windows fast
Message-ID: <1991Feb14.034544.26088@ux1.cso.uiuc.edu>
Date: 14 Feb 91 03:45:44 GMT
References: <2445@kluge.fiu.edu>
Sender: news@ux1.cso.uiuc.edu (News)
Reply-To: bazyar@cs.uiuc.edu (Jawaid Bazyar)
Organization: Mutation Testing Facility, University of Illinois
Lines: 17

In article <2445@kluge.fiu.edu> acmfiu@serss0.fiu.edu (ACMFIU) writes:
>what's the fastest way to update a window. actually, all i want to do
>is scroll it x number of lines. it just seems too slow at present. i use
>ScrollRect to do it. I heard from someone before that i could create a
>rectangle off the screen and copy it there, scroll it, then copy it back.
>that seems like too much work, though, just for a simple scroll. i could
>understand if you needed to update more things in your window, though.

  Something that will help will be to make sure SHR shadowing is on.
This is done thru setting the "FastPort aware" bit in the QDStartUp
call.

--
Jawaid Bazyar               | "I'm sure K&R have never heard of Mike." 
Senior/Computer Engineering |
bazyar@cs.uiuc.edu          | "That's okay. I'm sure Mike's never heard of K&R".
   Apple II Forever!        |  (discussion about Orca/C)