Possible issue with tree+textarea redraw?

[Chris Young]

On Mon, 22 Feb 2010 21:19:56 +0000, Steve Fryatt wrote:

> In that case, I'll probably include the change in the next set of files I
> commit, which will most likely be later this evening.  If it causes problems
> on the Amiga, we'll need to revisit it again.

Looks fine, except when the edit area appears, the whole tree moves
and redraws without clearing the rendering area.  Paul - am I supposed
to be handling this somehow?  How do I know an edit is about to happen
in order to clear it?

Chris