Using ACL 5.01 Common Graphics, how do I obtain the mouse coordinates from
inside of the "on-click" event handler for a control?

The control in question is a "drawable".

I couldn't get the mouse-left-down method to specialize on my control,
and I think I see in the documentation where it isn't supposed to.

Maybe I am asking the wrong question?  I am not very experienced with
common graphics.

-- Michael Glass