protected override void PaintElement(Telerik.WinControls.Paint.IGraphics graphics, float angle, SizeF scale)
{
base.PaintElement(graphics, angle, scale);
PointF[] points = new PointF[4];
points[0] = new PointF(this.loadingElement.BoundingRectangle.X, this.Size.Height - 1);
points[1] = new PointF(this.loadingElement.BoundingRectangle.Right, this.Size.Height * 0.35f);
points[2] = new PointF(this.unloadingElement.BoundingRectangle.X, this.Size.Height * 0.35f);
points[3] = new PointF(this.unloadingElement.BoundingRectangle.Right, this.Size.Height - 1);
graphics.ChangeSmoothingMode(System.Drawing.Drawing2D.SmoothingMode.AntiAlias);
graphics.FillPolygon(Color.FromArgb(100, Color.Gray), points);
graphics.RestoreSmoothingMode();
}
