How to get all the key press event in a textview?

[Magicloud Magiclouds <magicloud magiclouds gmail com>]

Dear all,
     As in Emacs, something like Ctrl+Alt+a work, even in a gnome-terminal. But in my simple gtk program, I just get ctrl+65507(keyval) in key release event.
     How to make it work? Thanks.