From:	"Gautam N. Lad" <gautam AT interlog DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Allegro won't display more than 1 PCX (properly)!!!
Date:	25 Jan 1997 22:25:01 GMT
Organization:	InterLog Internet Services
Lines:	71
Message-ID:	<5ce17t$68h@news.interlog.com>
NNTP-Posting-Host:	ip220-189.cc.interlog.com
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi,
Ok, since I don't know how to display PCX images, I had to resort
to Allegro (which I think is amazing, and I look forward to the
new version which includes some 3D goodies!!).

I modified the example EX15.C source to display two different PCXs.
So, here's the code.  Now what I don't understand is why
does Allegro use one palette to display an image, and when another
palette is created for another image, that original palette 
gets screwed up, and starts using the palette from the new palette.
Are ya confused?  Look at the source; it might be easier.

In this program, two PCX images are loaded (I could've used a for 
loop, but I wanted to make sure it works. Oh well.)

/*------------------------------------------------------------------*/
#include <stdlib.h>
#include <stdio.h>

#include "allegro.h"


void main()
{
   /* Create an array for the bitmaps and the palette. */
   BITMAP *the_image[2];
   PALLETE the_pallete[2];

   /* Load the image and store the palette in the the_pallete array */
   the_image[0] = load_bitmap("PREVUES.PCX", the_pallete[0]);
   the_image[1] = load_bitmap("PREVUES2.PCX", the_pallete[1]);

   /* Init. some stuff. */
   allegro_init();
   install_keyboard();

   set_gfx_mode(GFX_AUTODETECT, 800, 600, 0, 0);

   /* Set palette for first image, and display it. */
   set_pallete(the_pallete[0]);
   blit(the_image[0], screen, 0, 0,10,10,160,120);
   destroy_bitmap(the_image[0]);

   /* Set palette for secnod image, and display it.  
      But, when they get displayed, the second image looks fine; 
      it's the 1st image's palette that screws up.  It starts using
      the second image's palette. */

   set_pallete(the_pallete[1]);
   blit(the_image[1], screen, 0, 0,300,10,160,120);
   destroy_bitmap(the_image[1]);

   readkey();
   exit(0);
}
/*------------------------------------------------------------------*/

Please help.  Is this possible, or am I hopeless! ;(

Bye!
****************************************************
* Gautam N. Lad                                    *
*--------------------------------------------------*
*                                                  *
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