stretch ChartView on full Widget

[fender]

Good afternoon. Tell me how to stretch QchartView the whole screen? Specific sizes are now specified, but I need the size to vary depending on the size of the base window

        QChartView *chartView = new QChartView(ui->tabChart);
        chartView->resize(1070, 700); // swap?
        chartView->setChart(chart);
        chartView->setRenderHint(QPainter::Antialiasing);

[VRonin]

http://doc.qt.io/qt-5/examples-layouts.html