Path: utzoo!mnetor!uunet!seismo!sundc!pitstop!sun!pepper!cmcmanis
From: cmcmanis%pepper@Sun.COM (Chuck McManis)
Newsgroups: comp.sys.amiga
Subject: Re: LACE Workbench
Message-ID: <41034@sun.uucp>
Date: 4 Feb 88 19:18:15 GMT
References: <5145@well.UUCP>
Sender: news@sun.uucp
Reply-To: cmcmanis@sun.UUCP (Chuck McManis)
Organization: Sun Microsystems, Mountain View
Lines: 18

In article <5145@well.UUCP> shf@well.UUCP (Stuart H. Ferguson) writes:
>
>What's a good (read: fast/simple) way to detect if the Workbench screen is in
>interlace mode?  I need to do this to compute the aspect ratio for pixels on
>*any* Workbench screen.  Thanx in advance.

Open a window on the workbench and look at ..
interlace = ((win->WScreen).ViewPort.Modes & LACE) != 0;

But better yet, the aspect ratio is supposed to be ...
GfxBase->NormalDPX / GfxBase->NormalDPY 
This is the Dots per meter in the X direction over the
Dots per meter in the Y direction.


--Chuck McManis
uucp: {anywhere}!sun!cmcmanis   BIX: cmcmanis  ARPAnet: cmcmanis@sun.com
These opinions are my own and no one elses, but you knew that didn't you.