How can I tell when editing happens on a TextView?

["Garth's KidStuff" <garthskidstuff gmail com>]

Hey All,

If I have a Gtk::Entry object, I can connect to signal_changed to know when
th euser types a character into the control.  TextView doesn't seem to have
an analogous signal to hook into.  How can I tell when the user changes the
text in the control?

Thanks in advance.

-- 
Garth Upshaw
Garth's KidStuff