SkinRibbonGalleryBarItem添加无Item问题

            //DevExpress.UserSkins.BonusSkins.Register();
            SkinRibbonGalleryBarItem srgbi = new SkinRibbonGalleryBarItem();

            this.ribbonPageGroup1.ItemLinks.Add(srgbi);
            SkinHelper.InitSkinGallery(srgbi);

if (!DevExpress.Skins.SkinManager.AllowFormSkins)
{
DevExpress.Skins.SkinManager.EnableFormSkins();
}
DevExpress.LookAndFeel.UserLookAndFeel.Default.SetSkinStyle("VS2013BlueAdd");