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
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References: <5f9trv$e6t AT crl9 DOT crl DOT com>
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To: djgpp AT delorie DOT com
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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;