Xref:	news2.mv.net comp.os.msdos.djgpp:4767
From:	Jens Jedamzik <jedamzik AT eevmic DOT uni-paderborn DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: graphics display
Date:	9 Jun 1996 16:29:53 GMT
Organization:	Universitaet Paderborn, Germany
Lines:	26
Message-ID:	<4peu61$ftv@news.uni-paderborn.de>
NNTP-Posting-Host:	eevxt1.uni-paderborn.de
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

yyong AT ee DOT ryerson DOT ca schreibt:
> hi, I use djgpp for my C compiler and I wonder if it's possible to 
> display pictures (any format) on the screen. I want to create a slide 
> show program. Is there a C command to display the pictures?
> Thank you.
> 
> Alan

There is no simple C command for displaying graphics.
The major problem in writing a display program is the large number of different
video adaptor types; so a lot of programming work is to be done in the identification 
of the correct VGA parameters.

A good set of sources to review is found in the public domain program called PICLAB.
It is found in the SimTel/msdos/graphics/  directory under
piclb193.zip (.EXEs)      and
plsrc193.zip (sources in C and ASM).
In the same directory, there are also some sources for decoding GIFs, PCXs e.a.
Unfortunately, PICLAB is written for 16-bit mode compilation and assembly,
using segmented memory. But the sources show, how to identify and manage many
different types of graphic adaptors, including VESA modes.

(If anybody knows a better solution suitable for DJGPP, please tell it here, 
because I am sharing Alan's problem!)

Jens

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