protected override GraphicsPath CreateBorderRectPath(RectangleF innerBorderRect) { SizeF headerLabelSize = _headerLabel.DesiredSize; return(GraphicsPathHelper.CreateRoundedRectWithTitleRegionPath(innerBorderRect, (float)CornerRadius, (float)CornerRadius, true, HEADER_INSET_LINE, headerLabelSize.Width + HEADER_INSET_SPACE * 2)); }