From: "23yrold3yrold" <cbarry AT pangea DOT ca>
Newsgroups: comp.os.msdos.djgpp
Subject: Passing a datafile to a function
Date: Sun, 24 Sep 2000 00:27:04 -0500
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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

Hello. I've been working on a tilemap drawing function using Allegro. I've
got it working beautifully except for one small detail; the function is
supposed to get the width and height of the tile sprite from the ->w and ->h
of the RLE_SPRITE in the datafile passed to it, but it won't work. The below
code results in an error, saying that I can't check the w and h values of
image.dat because it's a void pointer. If anyone can help me with this I'd
really appreciate it.


Chris

void DrawTilemap(BITMAP *buffer, DATAFILE *image, vector<vector<int> > map,
int x = 0, int y = 0, int cl = 0, int repeat = 0)
{
   ........
   int w = (RLE_SPRITE *)image[map[0][0]].dat->w;
   int h = (RLE_SPRITE *)image[map[0][0]].dat->h;
   ........
}