From:	ludvig <ludvig AT club-internet DOT fr>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Allegro - PALLETE and BITMAP
Date:	Mon, 15 Sep 1997 00:28:38 +0200
Organization:	Grolier Interactive Europe
Lines:	25
Message-ID:	<341C6515.34F7@club-internet.fr>
References:	<QVfuBCAC0XC0EwLe AT mcoolie DOT demon DOT co DOT uk>
Reply-To:	ludvig AT club-internet DOT fr
NNTP-Posting-Host:	ppp-108-144.villette.club-internet.fr
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Mike Coulson wrote:
> 
>         At the start of the Allegro example program number 18, the
> following lines appear:
> 
>         PALLETE my_pallete;
>         BITMAP *scr_buffer;
> 
> Can someone tell me why the BITMAP has to be a pointer to the buffer
> scr_buffer, whereas my_pallete is not a pointer?
> 
> Yes.
> I am a beginner.
> 
> Thanks,
> --
> Mike Coulson

I just guess that PALLETE is a struct with a special size(3*256bytes)
where a ordinary bitmap might be as big or small as you wish(if you got
enough memory ofcourse:) therefore a pointer is nessecary to the bitmap
as it's size might be decided at runtime=compiler can't make room for
something with the size "unknown".

Ludvig

- Raw text -