internal RibbonQuickAccessToolbar(Ribbon ownerRibbon)
        {
            if (ownerRibbon == null) throw new ArgumentNullException("ownerRibbon");

             SetOwner(ownerRibbon);

             _dropDownButton = new RibbonButton();
             _dropDownButton.SetOwner(ownerRibbon);
             _dropDownButton.SmallImage = CreateDropDownButtonImage();

             _margin = new Padding(9);
             _padding = new Padding(3, 0, 0, 0);
             _items = new RibbonQuickAccessToolbarItemCollection(this);
             _sensor = new RibbonMouseSensor(ownerRibbon, ownerRibbon, Items);
             _DropDownButtonVisible = true;
        }
        internal RibbonQuickAccessToolbar(Ribbon ownerRibbon)
        {
            if (ownerRibbon == null)
            {
                throw new ArgumentNullException("ownerRibbon");
            }

            SetOwner(ownerRibbon);

            _dropDownButton = new RibbonButton();
            _dropDownButton.SetOwner(ownerRibbon);
            _dropDownButton.SmallImage = CreateDropDownButtonImage();

            _margin  = new Padding(9);
            _padding = new Padding(3, 0, 0, 0);
            _items   = new RibbonQuickAccessToolbarItemCollection(this);
            _sensor  = new RibbonMouseSensor(ownerRibbon, ownerRibbon, Items);
            _DropDownButtonVisible = true;
        }