GtkObject::connect
int connect(string signal, string function, [mixed 
      custom_data
     ]); 
    
     Connects a function to a signal so it is called when the signal is emitted
     by a widget.
    
    
     The function takes two or three arguments. The first parameter,
     signal is the textual name of the signal, the
     second parameter, function is the name of the
     function that should be used as a callback. The third parameter,
     custom is optional and can be used to pass extra
     data to the callback. Please see the Userguide section of the manual for
     more information on this.
    
    
     See Also: connect_after() ,
     connect_object() , 
     connect_object_after()