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From: rosenkra@convex.com (William Rosencranz)
Newsgroups: comp.sys.atari.st.tech
Subject: Re: How does one relocate the Mouse ptr from pt A to B?
Message-ID: <111630@convex.convex.com>
Date: 17 Dec 90 21:40:57 GMT
References: <9577@ncar.ucar.edu>
Sender: news@convex.com
Organization: Convex Computer Corporation; Richardson, TX
Lines: 29

In article <9577@ncar.ucar.edu> moses@hao.ucar.edu (Julie Moses) writes:
>Can someone explain how one can move the mouse location from one
>x,y coordinate to another 'automatically', i.e. without having to
>manually move it?

i don't know what u mean by "automatically" vs "manually". you can install
a new mouse position vector with vex_motn (i don't remember the exact name
but this is at least close). it is called with mouse x,y in d0/d1 and you
can change it. before your handler does its rts, it can change the d0/d1
based on some application-specific action, and the new coords get passed
on to the AES. from that point on, the AES updates its idea of where the
mouse is based on your d0.w/d1.w values. i don't know if this can be done
in C. it will be non-portable at best (using asm(...) statements).
i wrote my handler in assembler and have had no problems.

>Will doing this cause any problems with the AES? Make it lose track
>of the mouse?

there should be no problems. just make sure to restore the old handler
before your application finishes...

-bill
rosenkra@convex.com

(maybe this can go in the FAQ for this newsgroup as it has been asked
just recently, that is if there is a FAQ...)
--
Bill Rosenkranz            |UUCP: {uunet,texsun}!convex!c1yankee!rosenkra
Convex Computer Corp.      |ARPA: rosenkra%c1yankee@convex.com