/*propierties from obj*/
  canvas_item_signals[BUTTON_PRESS_EVENT] =
          g_signal_new ("item_button_press_event",
		        G_TYPE_FROM_CLASS (klass),
		        G_SIGNAL_RUN_LAST,
		        NULL,//G_STRUCT_OFFSET(DiaCanvasItemClass, button_press_event),
		        NULL, NULL,
		        dia_marshal_VOID__VOID,
		        G_TYPE_NONE, 0);

/*the signal is emited ..
*/

void dia_canvas_item_button_press_event(DiaCanvasItem* item,void* event)
{
   //gboolean result = FALSE;
   g_signal_emit (item, canvas_item_signals[BUTTON_PRESS_EVENT],0);
   //return result; 
}

/*---------------------*/
/*signal catched*/
g_signal_connect (item3, "item_button_press_event", G_CALLBACK (todos_eventos),item3 );