void Gtk2_ScrollingLabel::setStartSignal ( 
      
       string $signal
      
     )
     setStartSignal() will make the event box listen for the
     signal $signal and will envoke 
     startScroll() when ever it is heard.  The signal should
     be a signal that GtkEventBox listens for normally
     or a button press event. 
    
        string $signal -
        The Gtk signal to connect to startScroll().
       
returns The handler id for the connection.
This function can not be called statically.