/// <summary>
 /// Notify other widgets that the SelectedGraphic of a widget has changed
 /// </summary>
 /// <param name="sender">Widget whose SelectedGraphic has changed</param>
 public static void DispatchWidgetSelectedGraphicChangeEvent(object sender, SelectedItemChangeEventArgs args)
 {
     if (SelectedGraphicChangeHandler != null)
     {
         SelectedGraphicChangeHandler(sender, args);
     }
 }
 public virtual void OnSelectedItemChange(SelectedItemChangeEventArgs args)
 {
     if (SelectedItemChangeHandler != null)
     {
         SelectedItemChangeHandler(this, args);
     }
 }