How do I stop the Gtk from "using" the Tab key

["Norman Black" <stonybrk ix netcom com>]

I have a window with a GtkNotebook and I do not want Gtk to do anything with
the Tab key. I receive the Tab key but Gtk is still cycling the tabs in the
notebook. My key press handler returns TRUE. In other words we are both
using the same Tab key press.

Gtk should only cycle the tabs IF the focus is on one of the tabs, otherwise
hands off. Or at least  that mode should exist.

Best Regards,
Norman Black
Stony Brook Software