digraph QtClasses
{
    node[shape=box];

    QGraphicsView->QAbstractScrollArea->QFrame->QWidget[arrowhead=onormal color=chocolate4];

    QGraphicsView->QGraphicsScene[style=dashed color=blue];

    QGraphicsScene->QObject[arrowhead=onormal color=chocolate4];

    QGraphicsProxyWidget->QGraphicsWidget->QGraphicsObject->QGraphicsItem[arrowhead=onormal color=chocolate4];
    QGraphicsObject->QObject[arrowhead=onormal color=chocolate4];
    QGraphicsWidget->QGraphicsLayoutItem[arrowhead=onormal color=chocolate4];

}