GtkTreeView::"row-activated" signal and modifier keys

[murrayc t-online de (Murray Cumming)]

I think that GtkTreeView sends the "row-activated" signal when a row is
double-clicked, though I'm not sure because the signal isn't documented.
What would be the best way to find out whether the user was holding down
the Ctrl key when he double-clicked on the row?

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