Path: utzoo!mnetor!uunet!husc6!cmcl2!beta!hc!ames!aurora!phil
From: phil@aurora.UUCP (Phil Stone)
Newsgroups: comp.sys.amiga
Subject: Re: Three button mouse for the Amiga??
Message-ID: <1668@aurora.UUCP>
Date: 3 Feb 88 17:38:43 GMT
References: <195@atrium.UUCP>
Organization: NASA Ames Research Center, California
Lines: 24
Keywords: mouse, three button mouse
Summary: Third button available through input device

In article <195@atrium.UUCP>, chanst@atrium.UUCP (Steve T Chan) writes:
> Is it possible to hook up a 3 button mouse to the Amiga??
> If so, would AmigaDOS support it and how?
>  

I have hooked up a three-button track-ball to the Amiga and incorporated
it into some music software I'm working on.  Intuition doesn't know about
the third button, but the Input Device (which is what "cooks" input events
for Intuition) lets you hear about just about everything that goes on at
the keyboard and mouseports.  

You have to write an Input Device handler to look for third-button events,
and insert this handler just ahead of Intuition in the input stream.  A fairly
good example of this is given in the RKM Input Device chapter (warning:
disable Lattice stack-checking, or the assembly-language fragment used to 
interface the handler will guru - spent two days figuring that one out.)

If you're interested in more details here, I can post some of the source.

Phil Stone
NASA Ames-Research
Moffett Field, CA

---- Disclaimer:  Opinions strictly personal, facts strictly unverifiable. -----