protected internal virtual void OnItemAdded (ToolStripItemEventArgs e)
{
if (e.Item.InternalVisible)
e.Item.Available = true;
m_helper.AddItem(e.Item);//(e.Item.Text,0);
//e.Item.SetPlacement (ToolStripItemPlacement.Main);
if (this.Created)
this.PerformLayout ();
ToolStripItemEventHandler eh = (ToolStripItemEventHandler)(Events [ItemAddedEvent]);
if (eh != null)
eh (this, e);
}