QCustomPlot Discussion and Comments

How to get the current background?

  void MultiCurvesPlot::mouseReleaseEvent(QMouseEvent* event)
{
    QCustomPlot::mouseReleaseEvent(event);

    if (event->button() == Qt::LeftButton)
        {
            textLabel->setVisible(false);
            arrow->setVisible(false);
            qDebug() << customPlot->axisRect()->background();
}

the output is

QPixmap(null)