Date: Sun, 9 Feb 1997 10:52:52 -0600 (CST)
From: Andrew Deren <aderen AT eecs DOT uic DOT edu>
To: djgpp <djgpp AT delorie DOT com>
Subject: Re: Allegro and the mouse
In-Reply-To: <5die25$13s_001@gn6.noord.bART.nl>
Message-ID: <Pine.SUN.3.95.970209105020.27546A-100000@bert.eecs.uic.edu>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

I have tried that and sometimes when you do not hide even if it is not in
the region you are drawing some side-effects may appear. You'll see some
part of the screen being drawn into. Particularly when your mouse is in
the same x or y positions of the screen when you draw. I do not know if
this is always a case, but I have experienced that. I think it is always a
good idea to hide a mouse and I think this is a result of the way allegro
handles the mouse.

On Sat, 8 Feb 1997, Douglas Eleveld wrote:

> Hi everyone,
> 
> I've been using Allegro for my rather primitive gui.  I heard here
> somewhere that you must hide the mouse before drawing on the screen.
> When I draw onto a winddow, I first check if the mouse is in the window
> and if it is not, then I just draw, and if it is in the window, I erase the 
> mouse before drawing in the window.  That means that sometimes I'll be 
> drawing on the screen with a visible mouse pointer, but not over the 
> drawing region.  Is this dangerous? I haven't had any problems so far.
> 
> Thanks
> 
> Doug Eleveld
>