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From: hadeishi@husc7.UUCP
Newsgroups: comp.sys.amiga
Subject: Re: Overscan graphics
Message-ID: <1658@husc6.UUCP>
Date: Mon, 13-Apr-87 14:14:49 EST
Article-I.D.: husc6.1658
Posted: Mon Apr 13 14:14:49 1987
Date-Received: Wed, 15-Apr-87 00:22:14 EST
References: <1987Apr8.095315.28822@sq.uucp>
Sender: news@husc6.UUCP
Reply-To: hadeishi@husc7.UUCP (Mitsuharu Hadeishi)
Organization: Harvard Univ. Science Center
Lines: 13
Summary: It's easy with Intuition

Re: Overscan graphics under Intuition . . .

	Yes, that's exactly how it is done, fairly simple, really.
SlideShow 1.2 will support full overscan displays as well as panning
(although panning and overscan do not mix well.)  Unfortunately, due
to the design of Intuition, Intuition will not work well on a panned
screen (Intuition doesn't know about the Dx, DyOffset in the RasInfo
structure of the ViewPort of the Screen.  So it renders into the bitmap
oblivious to this, although the "hot spots" of gadgets and so forth
are where you'd expect them to be.  So you have to reset Dx and DyOffset
to zero before using Intuition gadgets, requesters, etc.  Too bad.)

				-Mitsu