[ecfisa]

Hola rruffino.

Para el ejemplo agrega cuatro buttons (Left, Right, Up, Down).

Código Delphi [-]
...
implementation

const
   DELTA = 10;

procedure TForm1.FormCreate(Sender: TObject);
begin
  with SCrollBox1 do
  begin
    HorzScrollBar.Visible := False;
    VertScrollBar.Visible := False;
  end;
end;

procedure TForm1.btnScrollRightClick(Sender: TObject);
begin
  TWinControl(ScrollBox1).ScrollBy(DELTA, 0);
end;

procedure TForm1.btnScrollLeftClick(Sender: TObject);
begin
  TWinControl(ScrollBox1).ScrollBy(-DELTA, 0);
end;

procedure TForm1.btnScrollDownClick(Sender: TObject);
begin
   TWinControl(ScrollBox1).ScrollBy(0, DELTA);
end;

procedure TForm1.btnScrollUpClick(Sender: TObject);
begin
   TWinControl(ScrollBox1).ScrollBy(0, -DELTA);
end;

Saludos.