From:	aho450s AT nic DOT smsu DOT edu (Tony O'Bryan)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Type casting problems with gcc
Date:	Sun, 02 Mar 1997 14:34:36 GMT
Organization:	Southwest Missouri State University
Lines:	15
Message-ID:	<33198f78.2795996@ursa.smsu.edu>
References:	<5f9trv$e6t AT crl9 DOT crl DOT com>
NNTP-Posting-Host:	forseti.i94.smsu.edu
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On 1 Mar 1997 10:51:43 -0800, sammy AT crl DOT com (Samuel McGrath) wrote:

>I'm using the Allegro graphics library right now, and I'm trying to 
>reference the w and h fields of the BITMAP structure like this:
>
>void* bmp = create_bitmap(320,200);
>int bitmapwidth = (BITMAP*)(bmp)->w;

Is there some reason you can't declare bmp as type (BITMAP *)?  This makes
accessing the structure fields much easier:

BITMAP *bmp = create_bitmap(320,200);
int bitmapwidth = bmp -> w;

- Raw text -