🚀 go-pugleaf

Greetings! I'm about to start developing a TCL application, something
I've never done before, so I figured I'd start asking questions on how
to implement some of my ideas. The heart of the program allows the
user to drag and/or position several visual objects(panes) around in a
user defined area. When the objects change position, a graph which
uses their locations must be updated to reflect their new positions. 
Here are some questions:

1) How do I make an object dragable with a gray outline? CMouseTask
looks promising because I'd like to be able to use Undo.
2) Once an object is moved, how should this change be communicated to
the graph which must be updated? I suppose a broadcastChange is in
order. 
3) I'd like to put the graph and the dragging area in one window.
Should all the various pieces be separate panes?

I'd appreciate all help and suggestions greatly. Since this project is
what I'll be doing during winter break, I'll have plenty of questions
for the list. If you want more detailed information about the project,
please Email me directly, I'd love to discuss it. Thanks!

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John P. Speno		| Disclaimer: Everything I say is my own propaganda.
Trumps R' Us		|  Rutgers Camden, Computer Science Club Secretary. 
speno@clam.rutgers.edu	|		Resistance Is Futile.
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