procedure TForm1.Button1Click(Sender: TObject);
var
        ptArray : array[0..9] of TPOINT;
        PtCounts : array[0..1] of integer;
begin
        PtArray[0] := Point(0, 0);
        PtArray[1] := Point(0, 100);
        PtArray[2] := Point(100, 100);
        PtArray[3] := Point(100, 0);
        PtArray[4] := Point(0, 0);
        PtCounts[0] := 5;
        PtArray[5] := Point(25, 25);
        PtArray[6] := Point(25, 75);
        PtArray[7] := Point(75, 75);
        PtArray[8] := Point(75, 25);
        PtArray[9] := Point(25, 25);
        PtCounts[1] := 5;
        PolyPolygon(Form1.Canvas.Handle,
        PtArray,PtCounts,2);
end;