Stetic.ObjectWrapper.DetachDesigner C# (CSharp) Method

        public void DetachDesigner(IDesignArea designer)
        {
            OnDesignerDetach (designer);
        }

 protected override void OnDestroyed()
 {
     if (preview != null)
     {
         if (wrapper != null)
         {
             wrapper.DetachDesigner(resizableFixed);
         }
         preview.SizeAllocated           -= new Gtk.SizeAllocatedHandler(OnResized);
         resizableFixed.SelectionChanged -= OnSelectionChanged;
         resizableFixed = null;
         preview        = null;
         wrapper        = null;
     }
     base.OnDestroyed();
 }