Plot method not drawing smooth circles

[jinuthomas]

Hi,
I am using the CWindowGc::Plot() method to draw the two circle, one outer(gray) and the other inner(white). But the circles are not dosplayed properly(border). Image attached. Code snippet is also given below. Whst th solution for this? Pls help

CWindowGc& gc = SystemGc();
gc.SetBrushStyle(CGraphicsContext::ENullBrush);
gc.SetPenStyle(CGraphicsContext::ESolidPen);

TSize penSize(13, 13);
gc.SetPenSize(penSize);
gc.SetPenColor(KRgbDarkGray);
TPoint point(aRect.iTl.iX+10, aRect.iTl.iY+10);

gc.Plot(point);
penSize.SetSize(9, 9);
gc.SetPenSize(penSize);
gc.SetPenColor(KRgbWhite);
gc.Plot(point);


Thanks,
Jinu