Code:

procedure TForm1.Button1Click(Sender: TObject);

var

mf: TMetaFile;

mfc: TMetaFileCanvas;

i: integer;

ClipBrdFormat: word;

data: cardinal;

palette: hPalette;

p: array [0..90] of TPoint;

begin

mf := TMetaFile.Create;

mf.Width := 100;

mf.Height := 100;

mfc := TMetafileCanvas.Create(mf, 0);

with mfc do

begin

   Pen.Color := clBlack;

   FrameRect(ClipRect);

   MoveTo(0, 50);

   LineTo(100, 50);

   LineTo(95, 48);

   MoveTo(100, 50);

   LineTo(95, 52);

   MoveTo(50, 100);

   LineTo(50, 0);

   LineTo(48, 5);

   MoveTo(50, 0);

   LineTo(52, 5);

   Brush.Style := bsClear;

   Font.name := 'arial';

   Font.Size := 6;

   TextOut(55, 0, 'Y');

   TextOut(95, 38, 'X');

   Pen.Color := clRed;

   for i := low(p) to high(p) do

     p[i] := Point(i, round(50 - 30 * sin((i - 50) / 5)));

   Polyline(p);

end;

mfc.Free;

mf.SaveToClipboardFormat(ClipBrdFormat, data, palette);

OpenClipboard(Application.Handle);

EmptyClipboard;

SetClipboardData(ClipBrdFormat, data);

CloseClipboard;

mf.Inch := 200;

Form1.Canvas.Draw(0, 0, mf);

mf.Free;

end;