Avoid automatic navigation between GtkEntry widgets with arrows

["Felipe Monteiro de Carvalho" <felipemonteiro carvalho gmail com>]

Hello,

I have a number of GtkEntry widgets in my form, and if I press the up
and down key it navigates between them, according to the Tab order.
But, I would like to supress this, only allowing Tab to change the
focus to other widgets, because I want to implement a completion
feature, and I don't want to use GtkEntryCompletetion, but rather my
own mechanism.

Any ideas how to achieve that?

thanks,
-- 
Felipe Monteiro de Carvalho