QT Data Visualization Line through Points

[BadHombre]

Hi Guys :)

I am currently working with the scatter of the QT Example.

I am now Adding Points to this Scatter and everthing wirks fine.

    QScatterDataArray *dataArray = new QScatterDataArray;
    dataArray->resize(m_itemCount);
    QScatterDataItem *ptrToDataArray = &dataArray->first();
    ptrToDataArray->setPosition(QVector3D(PositionSC[0],PositionSC[1],PositionSC[2]));
    ptrToDataArray++;

Now i want to show a line through the Points i am adding to the scatter.
Do sb now how i can realize this ?

Hope that sb can Help me :)
Thanks in advance!