Toggle and the Inconsistent Property

[dhk <dhkuhl optonline net>]

What is the inconsistent property to a toggle?  

I want to be able to flag rows in a treeview for possible deletion so
they can be reviewed before flagging them for deletion.  So the check
box needs to have three states, kind of like the minesweeper game,
checked, unchecked, and an inbetween state.  Does anyone know how to do
this?

Thanks in advance,

--dhk