TreeView and default widget

[Attilio Fiandrotti <fiandro tiscali it>]

Hi

In my interface i have a button which grabs default focus like this

GTK_WIDGET_SET_FLAGS (GTK_WIDGET(my_button), GTK_CAN_DEFAULT);
gtk_widget_grab_default (button)

so that it gets activated when the user presses enter key,
and i also have a Treeview which grabs focus like this

gtk_widget_grab_focus(view)

so that the user can scroll the list without tabbing into it.
Obviously, when the treeview is active, the enter key no longer 
activates the button and the user has to tab over it and press space or 
enter to activate it.
Is there a solution for this that doesn't require dealing with 
key_press_event signal?

thanks

Attilio