[pygtk] [SOLVED] custom CellRenderer and custom signals - how?

[Don Question]

Thanks to a post in #pygtk at irc.gimp.org i got it solved. I want to share this for others

with maybe similar problems:

#--------------------------------------------------------------------------
import gtk
import gobject

class CellRendererPixbufXt(gtk.CellRendererPixbuf):
    __gproperties__ = { 'active-state' :                                      
                        (gobject.TYPE_STRING, 'pixmap/active widget state',  
                        'stock-icon name representing active widget state',  
                        None, gobject.PARAM_READWRITE) }                      
    __gsignals__    = { 'clicked' :                                          
                        (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, ()) , } 

    def __init__( self ):                                                    
        gtk.CellRendererPixbuf.__init__( self )                              
        self.set_property( 'mode', gtk.CELL_RENDERER_MODE_ACTIVATABLE )      
                                                                              
    def do_get_property( self, property ):                                    
        if property.name == 'active-state':                                  
            return self.active_state                                          
        else:                                                                
            raise AttributeError, 'unknown property %s' % property.name      
                                                                              
    def do_set_property( self, property, value ):                            
        if property.name == 'active-state':                                  
            self.active_state = value                                        
        else:                                                                
            raise AttributeError, 'unknown property %s' % property.name      
                                                                              
    def do_activate( self, event, widget, path,  background_area, cell_area, flags ):    
        print( "do_activate" )                                                
        if event.type == gtk.gdk.BUTTON_PRESS:                                
            self.emit('clicked')          
                                                  
    def do_clicked(self):                                        
        print "do_clicked"                                          
        
gobject.type_register(CellRendererPixbufXt)
#--------------------------------------------------------------------------

see also:
http://userpage.chemie.fu-berlin.de/~chrbecke/gobject-tutorial/
http://www.pygtk.org/pygtk2tutorial/sec-EventHandling.html