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Subject:	Pointers to stucts
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From:	Dogansmoobs <dogansmoobsNOdoSPAM AT hotmail DOT com DOT invalid>
Newsgroups:	comp.os.msdos.djgpp
Message-ID:	<01414368.9f063b88@usw-ex0103-086.remarq.com>
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Date:	Sun, 28 May 2000 20:14:18 -0700
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

A while ago, I used to use Allegro.  It was great, but I spent
way too much time wondering, how does it do that?  So one day, I
decided to write my own library, right now only for mode 13h.
It worked great, except for when I tried to pass a pointer to a
stuct to a function.  My bitmap stuce looks something like this:

typedef struct bitmap
{
 int width;
 int height;
 char *dat;
} bitmap;

If I pass the whole struct to a function, I can access it
normally, but when I do it as allegro does, like this:

bitmap *bmp;
bmp = loadPcxFile("file.pcx");

In the loadPcxFile function, it always crashes on the line:
bmp->width = width;

and also in any function that tries to access the passed pointer
to a bitmap, I get a page fault.  Is there something really
obvious that I'm missing here???  If there is, I'd really
appreciate if you could call me stupid and tell me what I'm
doing wrong.

 - Dogansmoobs
I look exactly like a 15th centry explorer except completely
differant.

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