QChart *chart = new QChart();

    //prepare data
    QLineSeries *series = new QLineSeries();
    QLineSeries *series2 = new QLineSeries();

    for (int i=0;i<100;i++)
    {
        series->append(i, i*i);
        series2->append(i, i*10);
    }

    //name it
    series->setName("Square");
    series2->setName("Multiplied by 10");

    //add data series ti the chart
    chart->addSeries(series);
    chart->addSeries(series2);

    //specify legend position
    chart->legend()->setAlignment(Qt::AlignBottom);

    //set chart title
    chart->setTitle("QT Charts example");

    //add axis to the chart
    QDateTimeAxis *axisX = new QDateTimeAxis;
    axisX->setTickCount(10);
    axisX->setFormat("MMM yyyy");
    axisX->setTitleText("Date");
    chart->addAxis(axisX, Qt::AlignBottom);
    series->attachAxis(axisX);

    QValueAxis *axisY = new QValueAxis;
    axisY->setLabelFormat("%i");
    axisY->setTitleText("Money");
    chart->addAxis(axisY, Qt::AlignLeft);
    series->attachAxis(axisY);

    //create new view
    QChartView *chartView = new QChartView(chart);
    chartView->setRenderHint(QPainter::Antialiasing);

    //plase it in this widget
    setCentralWidget(chartView);