From:	"DeHackEd" <Not DOT given AT out>
References:	<35c3dbcf DOT 15385935 AT nntp DOT ix DOT netcom DOT com>
Subject:	Re: Allegro Bitmap Question
Date:	Sun, 9 Aug 1998 14:16:52 -0400
Lines:	21
Message-ID:	<e6vU4$8w9GA.210@upnetnews05>
Newsgroups:	comp.os.msdos.djgpp
NNTP-Posting-Host:	d15-bn46-blvl-pda.attcanada.net [142.194.137.207]
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

You need to know the colour depth of your bitmaps (it's 8 bit if you havn't
called set_color_depth). Next, multiply that by the x and y values, but remeber
to use bytes for colour depth and not bits.

1 byte per pixel  * 8 *8 = 64;

Next, memcmp the bmp->dat entries for 64 bytes.

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wavemist AT ix DOT netcom DOT com wrote in message
<35c3dbcf DOT 15385935 AT nntp DOT ix DOT netcom DOT com>...
>Hi everyone.  I'm trying to find a way to compare two 8 pixel by 8
>pixel Allegro BITMAPs.  I tried using memcmp, but I don't know how to
>calculate the amount of memory the bitmap takes up.  Please help!

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