Getting a value from a Gtk2::ComboBoxEntry

[Daniel Flemming <danflemming mac com>]

The Gtk2::ComboBoxEntry widget is just like a Gtk2::ComboBox, except it allows the user to type in a blank 
space like a Gtk2::Entry.

If the user doesn't type in that space, but just selects from the dropdown list, you can read the 
Gtk2::ComboBoxEntry the same you can a Gtk2::ComboBox, by using the get_active method.

However, if the user does type, get_active just returns a -1. How do you find out what the text the user 
typed was? You can't just use a get_text method like you can with a Gtk2::Entry, and while the 
Gtk2::ComboBoxEntry widget is a container, it doesn't seem to have any children set up by default.

Anyway. I'm just asking :)

Dan Flemming