[plt-scheme] Changing the draw behaviour of a selected editor snip

Hi,
I'm trying to Change the draw behaviour of a selected editor snip in a
pasteboard%.

I am making a datagrid editor on top of pasteboard and editor-snip
because I don't want to duplicate functionality.

My problem is how I can determine where the 'compass point' square
dots that are used to show an editor snip is selected are drawn- so I
can override with my own draw method(invert).

Any pointers gratefully accepted.

Thanks, Stephen

ps code
 http://code.google.com/p/projects-project/source/browse/trunk/gui/DataGrid.ss

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Stephen De Gabrielle
stephen.degabrielle at acm.org
Telephone +44 (0)20 85670911
Mobile        +44 (0)79 85189045
http://www.degabrielle.name/stephen