DoubleBuffered verunstaltet meine Form

[xZise]

Delphi-Quellcode:

  DoubleBuffered := true;
  while (gbChangeLog.Top > 8) and (cbVisSkin.Checked) do begin
    gbChangeLog.Top := gbChangeLog.Top - 4;
    gbChangeLog.Height := gbChangeLog.Height + 4;
    Application.ProcessMessages;
    Sleep(20);
  end;
  DoubleBuffered := false;

Da bringts ein .Refresh nicht.