connecting lines?

[konvex]

Hi, I can draw a line between two points and if the point moves the line moves too.
But now I would like to draw a second line between the first point and another one. This works, but then the line isn't connected to the points.
I don't know what's wrong, can somebody help me?

void GraphicsScene::mousePressEvent(QGraphicsSceneMouseEvent *e)
{
pos=e->scenePos();
end=e->scenePos();
item = new EllipseItem(pos.x(), pos.y(),10,10);
item2 = new EllipseItem(end.x(), end.y(),10,10);
item->setFlags(QGraphicsItem::ItemIsMovable);
item2->setFlags(QGraphicsItem::ItemIsMovable);
 
if(e->button() == Qt::LeftButton)
{
	if(itemAt(pos))
	{QGraphicsScene::mousePressEvent(e); }
 
        else
	{addItem(item);
	linie = new LineItem(item,item2);
	QObject::connect(item, SIGNAL(positionchanged()), linie , SLOT(updatePosition()));
	QObject::connect(item2, SIGNAL(positionchanged()), linie , SLOT(updatePosition()));
	addItem(linie);
	}
}
 
if(e->button() == Qt::RightButton)
{
	if(itemAt(pos))
	{
	linie = new LineItem(item,item2);
	QObject::connect(item, SIGNAL(positionchanged()), linie , SLOT(updatePosition()));
	QObject::connect(item2, SIGNAL(positionchanged()), linie , SLOT(updatePosition()));
	addItem(linie);
	}
	else
	{ QGraphicsScene::mousePressEvent(e); }
}
}
 
void GraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent *e)
{
if((e->buttons()==Qt::LeftButton) || (e->buttons()==Qt::RightButton))
	{item2->setPos(e->scenePos());
	item2->update();
	linie->updatePosition();
	linie->update();
	}
 QGraphicsScene::mouseMoveEvent(e);
}

void GraphicsScene::mousePressEvent(QGraphicsSceneMouseEvent *e)
{
pos=e->scenePos();
end=e->scenePos();
item = new EllipseItem(pos.x(), pos.y(),10,10);
item2 = new EllipseItem(end.x(), end.y(),10,10);
item->setFlags(QGraphicsItem::ItemIsMovable);
item2->setFlags(QGraphicsItem::ItemIsMovable);

if(e->button() == Qt::LeftButton)
{
	if(itemAt(pos))
	{QGraphicsScene::mousePressEvent(e); }

        else
	{addItem(item);
	linie = new LineItem(item,item2);
	QObject::connect(item, SIGNAL(positionchanged()), linie , SLOT(updatePosition()));
	QObject::connect(item2, SIGNAL(positionchanged()), linie , SLOT(updatePosition()));
	addItem(linie);
	}
}

if(e->button() == Qt::RightButton)
{
	if(itemAt(pos))
	{
	linie = new LineItem(item,item2);
	QObject::connect(item, SIGNAL(positionchanged()), linie , SLOT(updatePosition()));
	QObject::connect(item2, SIGNAL(positionchanged()), linie , SLOT(updatePosition()));
	addItem(linie);
	}
	else
	{ QGraphicsScene::mousePressEvent(e); }
}
}

void GraphicsScene::mouseMoveEvent(QGraphicsSceneMouseEvent *e)
{
if((e->buttons()==Qt::LeftButton) || (e->buttons()==Qt::RightButton))
	{item2->setPos(e->scenePos());
	item2->update();
	linie->updatePosition();
	linie->update();
	}
 QGraphicsScene::mouseMoveEvent(e);
}

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