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From: mcdonald@aries.scs.uiuc.edu (Doug McDonald)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Animation in Win 3.0?
Message-ID: <1991Feb9.210356.9206@ux1.cso.uiuc.edu>
Date: 9 Feb 91 21:03:56 GMT
References: <1991Feb9.182402.24992@isis.cs.du.edu>
Sender: news@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
Lines: 36


In article <1991Feb9.182402.24992@isis.cs.du.edu> ebergman@isis.cs.du.edu (Eric Bergman-Terrell) writes:
>
>I have an MS-DOS application that I'm considering porting to MS-Windows 3.0.
>The application uses the 2 page mode of EGA/VGA cards to do animation.  In
>other words, the program draws to a non-visible page, then makes that page
>visible, and while that page is displayed, draws the next frame to the 
>non-visible page, etc.
>
>Anyway this results in fairly crisp animation...
>
>My question:  how is this done in Windows 3.0? 

It isn't

>Will Windows use double-
>buffered graphics if an EGA or VGA card is in use?  Or will it do a 
>software bitblt?

The latter.

>
>In other words:  is it possible to do crisp animations that involve the
>entire screen?
>
>
Not in general.

Doug McDonald


****************************************************************************
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