From:	Stephen Snape <stephen DOT snape AT virgin DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Having A Problem with Allegro
Date:	Sun, 04 Oct 1998 21:48:33 +0000
Organization:	Virgin News Service
Lines:	32
Message-ID:	<3617ED2F.B9A1239@virgin.net>
References:	<6v8d73$770$1 AT news3 DOT mr DOT net>
Reply-To:	stephen DOT snape AT virgin DOT net
NNTP-Posting-Host:	194.168.68.198
Mime-Version:	1.0
X-Mailer:	Mozilla 4.04 [en] (Win95; I)
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Johnny wrote:

> I just got djgpp with Rhide and allegro up and running and entered the
> following code (see below). And all I come up with is a blank screen.
> Am running Win98 on a PII 300 with a Graphics Blaster video card. This code
> should work. Thanks
> #include <allegro.h>
>
> int main()
> {
>  allegro_init();
>  install_keyboard();
>  set_gfx_mode(GFX_VGA,320,200,0,0);
>  textout_centre(screen,font,"Press Any Key.",160,100,255);
>  readkey();
>  return 0;
> }

  The problem with this code is that you're specifying color 255 but this means
nothing until you tell it which palette you're using.

Insert the line ...

set_palette(desktop_palette);

...after set_gfx_mode and change the color in textout centre to 1 instead of
255, (I know this to be red), compile link and run.

Steve

- Raw text -