more fun with treeview

[B McAndrews <bmcandrews efs-us com>]

What I'm looking at doing is something like this in a treeview:

-------------------------------
| row1  | v1     v2|  ...
|           | v3     v4|  ...
------------------------------

where v1-v4 are placed inside a cell at the corners.  It looks like I 
could do this with a slight variation of muppet's CellRenderMultiline, 
but I'd really would like to see if the data values (v1-v4) can be 
directly tied to a model data value.

--
Brian