[pygtk] Focus behaviour of ComboBoxEntry vs SpinButton

[egbert]

In a gui I have a widget from combo_box_entry_new_text() 
and below it one from SpinButton().

When I TAB thru this gui I see that the down-arrow of the 
ComboBoxEntry receives focus, but the up-down-arrow-duo
of the SpinButton does not. 
How can I change the behaviour of one or both of them ?
tia, egbert
-- 
Egbert Bouwman - Keizersgracht 197 II - 1016 DS  Amsterdam - 020 6257991
========================================================================