protected override void OnRender(System.Windows.Media.DrawingContext drawingContext)
        {
            F14BDevice _F14Bdevice = Visual as F14BDevice;

            if (_F14Bdevice != null)
            {
                drawingContext.DrawRectangle(_bezel, null, _bezelRectangle);
            }
        }
        protected override void OnRefresh()
        {
            F14BDevice _F14Bdevice = Visual as F14BDevice;

            if (_F14Bdevice != null)
            {
                _bezelRectangle = new Rect(0, 0, _F14Bdevice.Width, _F14Bdevice.Height);

                _bezel = CreateImageBrush(_F14Bdevice.BezelImage);
            }
            else
            {
                _bezel = null;
            }
        }