[Gtk-sharp-list] Textview keypress event problem

[Atis]

Hello all,
I would like to use the keypress event  (C#) to decide whether the content of a textview widget has changed or not at the exit of an application. If it changed, I ask whether I should save the modification or not. My problem is that the keypress event captures only the Lshift, Rshift, Caps lock keys, but not the regular "letter" and "number" keys. 
(this is the function, autogenerated by monodevelop )

protected virtual void OnTxtwMegjegyzesKeyPressEvent (object o, Gtk.KeyPressEventArgs args)
        {        
            valtozas="1";            
        }

It should be fired up when any key pressed with the focus on the textview widget. 
Any help please? Thanks, Ati

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