[ REQ 5276]: mouse bindings in geomview

[mhs at eng.cam.ac.uk]

Hi -

I've had feedback from the people I'm preparing a Geomview application for.
They are Mac users and typically export the display to a Mac X-session.
Their mice are single-button mice, so I would really like to change the 
mouse-bindings for the Geomview window.

[1] normal rotation ("glass sphere") is fine.

[2] spinning about the z-axis, normally middle button. what about if i had a 
button to toggle between [1] and [2]. i can't see how i can do this from GCL.

[3] "picking" a point: can i make geomview pick using the left button?
    again this is toggled by an external button.

i'd be very grateful if you could tell me how to do this, either in GCL 
or by modifying the source directly (less desirable).
i work with Suns and Linux.

Cheers, Mike
-----
mhs at eng.cam.ac.uk
Speech, Vision and Robotics Group, Cambridge University Engineering Dept.