QQuickWidget inside QDockWidget: resize() not working

[Fheanor]

I use a QML with a C++ model.

My QML is set in a QQuickWidget that I put in a QDockWidget.

I need sometimes to resize my QDockWidget. However, when I call resize() function, nothing is happening.

What am I doing wrong ?

Code example:

MainWindow::MainWindow() {    
    QQuickWidget *view = new QQuickWidget;
    QQmlContext *ctxt = view->rootContext();

    ctxt->setContextProperty("myModel", m_model);

    view->setSource(QUrl::fromLocalFile(QML_FILE_DEFINITION));
    view->setGeometry(0, 200, 200, 400);
    view->setResizeMode(QQuickWidget::SizeRootObjectToView);
    view->setMinimumSize(QSize(200,200));
  
    m_dock->setWidget(view); //QDockWidget
    addDockWidget(Qt::LeftDockWidgetArea, m_dock);

    m_dock->resize(500,200); //This is not working
    view->resize(500,200); //Not either    
}