protected override void DoPaint(HCStyle aStyle, RECT aDrawRect, int aDataDrawTop, int aDataDrawBottom, int aDataScreenTop, int aDataScreenBottom, HCCanvas aCanvas, PaintInfo aPaintInfo) { aCanvas.Pen.BeginUpdate(); try { aCanvas.Pen.Width = FLineHeight; aCanvas.Pen.Style = FLineStyle; aCanvas.Pen.Color = Color.Black; } finally { aCanvas.Pen.EndUpdate(); } if (this.Height > 1) { IntPtr vExtPen = HC.CreateExtPen(aCanvas.Pen, GDI.PS_ENDCAP_FLAT); IntPtr vOldPen = (IntPtr)GDI.SelectObject(aCanvas.Handle, vExtPen); try { PaintLine(aCanvas, aDrawRect); } finally { GDI.SelectObject(aCanvas.Handle, vOldPen); GDI.DeleteObject(vExtPen); } } else { PaintLine(aCanvas, aDrawRect); } }