Xref: news2.mv.net comp.os.msdos.djgpp:3515
From: Shawn Hargreaves <slh100 AT york DOT ac DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Allegro and Dialogues
Date: Sun, 5 May 1996 12:27:15 +0100
Organization: The University of York, UK
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On Sun, 5 May 1996, Nicholas Marrone wrote:

> 	I am once again having trouble with the dialouges in Allegro because
> of my inexperience with it. I have been trying to display a bitmap
> while staying in the main dialogue. I've been able to do this, but
> allegro refreshes the bitmap constantly, and the sprites over it
> causing a lot of flickering. The way I've done this is by making a

Try something like:

int bitmap_viewer_proc(int msg, DIALOG *d, int c)
{
    if (msg == MSG_DRAW) {
        blit(whatever, screen, at position d->x, d->y);
        draw whatever else you want to draw.
    }

    return D_O_K;
}

Then put a bitmap_viewer_proc in your dialog at the appropriate place, 
and it should work correctly...

If you only want to view a single bitmap, there is a d_bitmap_proc() 
built into Allegro which will do this for you: just position it where you 
want it and set d->dp to point to the bitmap.


/*
 *	Shawn Hargreaves.        Why is 'phonetic' spelt with a ph?
 *	Check out Allegro and FED on http://www.york.ac.uk/~slh100/
 */