TreeView: cell-changed signal?

[murrayc t-online de (Murray Cumming)]

I'm reposting this here because I didn't get any reply in gtk-list:

I'm using a GtkTreeView, with a GtkListStore model. There is a
GtkTreeModel "row_changed" signal, but I can't see how to detect when a
particular column of a row has changed. I suppose I could store a copy
of all the data and do a comparison, but that would be silly.

-- 
Murray Cumming
murrayc usa net
www.murrayc.com