System.Windows.Forms.CommandBar.TrackDropDownNext C# (CSharp) Method

        private void TrackDropDownNext(int index)
        {
            if (index != this.trackHotItem)
            {
                NativeMethods.PostMessage(Handle, NativeMethods.WM_CANCELMODE, 0, 0);
                this.trackNextItem = index;
            }
        }