I am using the same Trackman trackball that was shown on the eBay page along
with the Marble FX index finger track ball.  It has a ball for the thumb and
a middle button that rolls and clicks.  Click and drag is to hols down the
left button and move the thumb ball.

I have a marble FX and the drivers for it were never satisfactory to my
mind.  There are some buttons that don't do anything.  One of them is
purported to be a drag button.  You click on something with that button,
hold it down and move the ball.  I have never seen it work.

The Trackman is flawless.

I case anyone is curious this is how a popular CAD program implements the
buttons.

cursor anywhere, hold down middle button/wheel and move mouse/ball:
entire assembly rotates about a point (centroid?)

cursor anywhere roll middle button/wheel away:
assembly shrinks (zoom out)
Roll button towards self assembly grows (zoom in)

cursor on a component of the assembly, left button down, move mouse/ball:
component pans in plane parallel top view plane

cursor on a component of the assembly, right button down, move mouse/ball:
component rotates about a point.

cursor on a component of the assembly, control key depressed, middle
button/wheel down, move mouse/ball:
entire asswembly pans parrallel to view plane

cursor on a component of the assembly, control key depressed, left button
down, move mouse/ball:
a copy of the componenet pans parallel to view plane and remais when
finished.

cursor anywhere, depress shift key, hold middle button/wheel down and move
mouse/ball upward:
assembly grows (zoom in) ) like gnome spec.
move mouse/ball downward:
assembly shrinks (zoom out) ) like gnome spec.


On Tue, Sep 2, 2008 at 10:31 PM, Sameer Sahasrabuddhe <[EMAIL PROTECTED]>wrote:

> On 9/3/08, Christian Ridderström <[EMAIL PROTECTED]> wrote:
>
> > That's what I've been using, but the above is stone age in terms
> > of useability compared to click'n'drag to pan...
>
> Philip,
>
> For the sake of clarity, can you please explain what "click and drag"
> means to you? From some of your posts, it seems you have never seen a
> scroll wheel on a  mouse, the one that also doubles as a middle
> button. Most people don't use a trackball, and so dragging means
> actually dragging the mouse on the surface (which where the action got
> its name).
>
> Sameer.
> --
> Research Scholar, Department of CSE, IIT Bombay
> http://www.it.iitb.ac.in/~sameerds/<http://www.it.iitb.ac.in/%7Esameerds/>
> _______________________________________________
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>


-- 
Michael Ross
=================================
Cycling in Central North Carolina
Schwinn Voyageur 11.8
Linear LWB, Greenspeed GTO, BikeE CT, AT
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