How to click/drag an object

[Judy Perry]

Hi all,

At the conference I asked Jacque about this and she gave me an idea
but, of course, now that I'm back home and ready to work on it, I
haven't the foggiest idea of how to proceed (sorry, Mark Wieder -- I
also don't remember your solution, alas).

What I need is for a user to be able to click on an object (say, a
locked field), move the mouse to a destination container (say, a
graphic rectangle), with the locked field following the cursor along
the way,  and click to drop the locked field within the rectangle.

I know I could use a mouseStillDown handler, but, as the user is a 7
year old child, I'm not betting on that being successful.

Does anyone have any ideas?

Kindest thanks,

Judy