多邊形 - Polygon

//多邊形描邊與填充

var
　g: TGPGraphics;
　p: TGPPen;
　sb: TGPSolidBrush;
　pts: array[0..4] of TGPPoint;
begin
　g := TGPGraphics.Create(Canvas.Handle);
　sb := TGPSolidBrush.Create(MakeColor(255,255,255));
　p := TGPPen.Create(MakeColor(255,0,0),4);
　pts[0].X := 11;　pts[0].Y := 11;
　pts[1].X := 66;　pts[1].Y := 111;
　pts[2].X := 88;　pts[2].Y := 222;
　pts[3].X := 111; pts[3].Y := 88;
　pts[4].X := 222; pts[4].Y := 66;
　g.DrawPolygon(p, PGPPoint(@pts), Length(pts));　{第二個參數是指針類型, 需亞轉換}
　g.FillPolygon(sb, PGPPoint(@pts), Length(pts)); {第三個參數是頂點數}
　p.Free;
　sb.Free;
　g.Free;
end;