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Mail Archives: djgpp/1997/05/22/03:48:15

From: SpankE <dingfam AT imag DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Quick question re: Allegro BITMAPs
Date: Wed, 21 May 1997 19:02:42 -0700
Organization: Cyberion Networking Corp.
Lines: 12
Message-ID: <3383A942.44F9@imag.net>
References: <33832989 DOT 12988254 AT news DOT cis DOT yale DOT edu>
Reply-To: dingfam AT imag DOT net
NNTP-Posting-Host: hostb79.imag.net
Mime-Version: 1.0
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

> "void *dat" seems key... but in my lack of comprehension, I don't know
> how to get at it! In the system I am used to, I would expect it to be
> buffer[0]. But I don't think it is that simple.

Actually, all the image data in a BITMAP is contained in the "unsigned
char *line[0];"
So to access a point just use something like this:
bmp->line[x_position][y_position];
This is all in allegro.txt, under "Video Memory Access."

Hope that helps,
chris

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