uses clipbrd;

procedure TShowVRML.Kopieren1Click(Sender: TObject);
var
  bitmap: tbitmap;
begin
  bitmap := tbitmap.create;
  bitmap.width := clientwidth;
  bitmap.height := clientheight;
  try
    with bitmap.Canvas do
      CopyRect(clientrect, canvas, clientrect);
    clipboard.assign(bitmap);
  finally
    bitmap.free;
  end;
end;