Pygtk: Need combobox with menu layout

[G|N|]

Hello,

I am searching for a widget in pygtk that looks like a combobox but behaves like a menu :)

This is how it should look:

combobox0
combobox1-->combobox11
combobox2 combobox12
combobox3 combobox13

So you have a normal combobox with the standard behavior but the popup menu behaves like a real menu with sub entries.

Is there already a widget like this or did somebody already write this custom widget?

Thanks

[days_of_ruin]

Yeah I don't know if thats even possible.I don't think it would work that
great anyway tho.I suppose you already know about menubars:P