Moving Items with itemChange?

[konvex]

Hi,
I have problems with itemChange. I use it like the example "Diagram Scene".
I have two ellipse and a line between them and if I move the ellipse the line should move too.
ellipseitem.cpp

QVariant EllipseItem::itemChange(GraphicsItemChange change, const QVariant &value)
{
 if (change == QGraphicsItem::ItemPositionChange) 
  {
  foreach (LineItem *arrow, arrows) 
    {
     arrow->updatePosition();
    }
   }
  return value;
}

QVariant EllipseItem::itemChange(GraphicsItemChange change, const QVariant &value)
{
 if (change == QGraphicsItem::ItemPositionChange) 
  {
  foreach (LineItem *arrow, arrows) 
    {
     arrow->updatePosition();
    }
   }
  return value;
}

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ellipseitem.h

...
protected:
	QVariant itemChange(GraphicsItemChange change, const QVariant &value);
private:
	QList<LineItem *> arrows;

...
protected:
	QVariant itemChange(GraphicsItemChange change, const QVariant &value);
private:
	QList<LineItem *> arrows;

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but I get
LineItem was not declared in this scope
C++ forbids declaration of arrows with no type

My LineItem is like this: LineItem(qreal x1, qreal y1, qreal x2, qreal y2);
Can somebody tell me whats wrong?