Re: [AD] Problem with remove_mouse() and video bitmaps.

[aj <aj@xxxxxxxxxx>]

Stef wrote:

> On Fri, 30 Dec 2005 10:24:44 +0200, Peter Wang <tjaden@xxxxxxxxxx> 
> wrote:
>
> > +   Note: you must not be showing a mouse pointer on a bitmap at the  
> > time that
> > +   the bitmap is destroyed with destroy_bitmap(). This does not 
> > apply to
> > +   `screen' since you never destroy `screen' with destroy_bitmap().
>
>
> If the destroy_bitmap() function automatically nulled out the bitmap  
> pointer, it would be trivial to add a check to avoid drawing onto an  
> invalid bitmap. While this wouldn't be the end of this kind of 
> problems,  it would help allegro become more robust. It wouldn't break 
> compatibility  either (though programs using an old dll would be more 
> crash prone).
>
> Is there an obvious reason against this that I missed? (very 
> probable).  Otherwise, I think I could submit a patch for this one if 
> the following  days.


explain how that would work ?