From:	Chris Weaves <wd823095 AT stmail DOT staffs DOT ac DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	How do I set a viewport?Please..
Date:	Thu, 06 Nov 1997 18:37:07 +0000
Organization:	Staffordshire University
Lines:	19
Message-ID:	<34620E52.5688EB87@cr10m.staffs.ac.uk>
NNTP-Posting-Host:	mmg.soc.staffs.ac.uk
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hello there,
I have one question..

I am using the grx20.h graphics routines.
I set my display with the GrSetMode() function which gives
me high resolution graphics.
I am familiar with Borland graphics, in Borland I can set a
viewport with the command: setviewport(x1, y1, x2, y2);
which will give me an area of the screen which to display
graphics...  Do you know how I can do the same in DJGPP?
e.g. how can I setup a viewport with the co-ordinates:

 0, 0, 400, 300  (Top half of the screen in 800x600).

Thanks for your time, Christian..

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