QGraphicsView subclass fails

ofmrew

I am creating a subclass of QGraphicsView and promoting the GraphicsView widget to that subclass, MyView, using Qt5.10 under Mint Linux. Before I promote MyView, the item show, but when promoted it fails to display the items.

#include <QObject>
#include <QGraphicsView>
class MyView : public QGraphicsView
{
Q_OBJECT
public:
    MyView(QWidget *parent);
};
MyView::MyView(QWidget *parent)
{}
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    QGraphicsScene *scene = new QGraphicsScene(QRect(0, 0, 1000, 1000), this);
    scene->setBackgroundBrush(Qt::yellow);
    ui->view->setScene(scene);
    scene->addItem(new RocketLauncher(this));
    scene->addLine(0, 0, 1000, 1000);
}

Any ideas as to where I can begin to solve this problem?

ofmrew

Found the Problem! The following is the fix:
MyView::MyView(QWidget *parent) : QGraphicsView(parent)
{}