From: =?iso-8859-1?Q?G=FCnter_Ladwig?= <gladwig AT iname DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Best way to destroy bitmaps, font in Allegro?
Date: Fri, 2 Jun 2000 21:04:50 +0200
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hi!

> I have a basic question. What is the best way to destroy bitmaps and fonts
> in Allegro.
> I have to make sure that the bitmap/font is destroyed, but I am not sure
if
> it exists. They are created/destroyed by apps, not the OS.
>
> // Simplified
> BITMAP *B;
> FONT *F;
>
> // B may or may not be created
> if (!B) destroy_bitmap(B);
> if (!F) destroy_font(F);
>
> Note: The above bitmaps/fonts may not have had a create_bitmap/ font
> procedure applied to them.
>
> Does this destroy the bitmap/font if it is created, and skip if if it
isn't.
> I have been doing some testing, and I am not sure, especially with the
font.

Initialize all pointers with NULL, so that you know if it has been used or
not. Of course this does not guarantee that the pointer is valid.

ciao

guenter
----
Günter Ladwig
gladwig AT iname DOT com - http://cyberbobby.home.pages.de - ICQ: 14360158
"You know your game is in trouble...when you can look at a Dilbert comic
and not laugh, thinking, 'Been there, done that.'" (C) Steven Woodcock