Can I add a "key_press_event" handler to treeview without removing other handlers?

Hello, Every one

  I find that "key_press_event" has been connect to a handler which handle the 
row selecting. When I connect "key_press_event" to my handler, the row can't 
be selected. So I have to use "key_release_event". But there's no 
GDK_2BUTTON_PRESS in "key_release_event" status. I think there must be some 
way to add my "key_press_event" handler to treeview and at the same time the 
initial handler can still response. Can anybody tell me what it is?

  Thank you.

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