private void SetFormRegion() { if (base.Region != null) { base.Region.Dispose(); } Rectangle rect = new Rectangle(Point.Empty, base.Size); GraphicsPath path; if (XTheme.UseDefaultTopRoundingFormRegion) { path = GraphicsPathHelper.CreateTopRoundedPathForFormRegion(rect); } else { path = GraphicsPathHelper.CreateRoundedRect(rect, Radius, Round, false); } this.Region = new Region(path); }