[plt-scheme] drag & drop in MrEd

Robby Findler writes:
 > If you're talking about using the "metaphor" of drag-n-drop in
 > your own app, but not really doing what the built-in one does,

Yeah-- for example, a chess game: to make a move, you could click on a
piece, then click on a square, but it would be nicer to be able to
drag the piece to the target square (and it would snap back if it's an
illegal move).

 > there is some support, but mostly just in the form of a pasteboard%
 > -- I don't think that you can drag snips across windows, but there
 > may be support for it that I haven't run across yet.

Can you drag snips from one pasteboard to another?  Do both
pasteboards have to be embedded in another pasteboard?

--dougo at place.org