Mnemonics in WPF ComboBox

Hi there,

I have a WPF combobox with two values "Male" and "Female". It seems by
default the control supports mnemonics, e.g. if I press "M" on
keyboard, it sets the current ComboBoxItem to "Male"

If I use non-textual items, e.g. images+labels inside ComboBox, is
there a way hardcode such keyboard shortcut for each item?

E.g.

VerticalAlignment="Bottom" >



Margin="4">_Male





Margin="4">_Female




Thanks,

-Oleg.