#include <QtGui>

class MyGraphicsView : public QGraphicsView
{
    Q_OBJECT
public:
    MyGraphicsView(QWidget *parent = 0) : QGraphicsView(parent)
    {
        QGraphicsScene *s = new QGraphicsScene(-50,-50,500,500);
        setScene(s);
        QTimer *t = new QTimer(this);
        t->setInterval(1000);
        connect(t, SIGNAL(timeout()), this, SLOT(addWidget()));
        t->start();
        QPushButton *pb = new QPushButton("Menu button");
    }
    public slots:
        void addWidget()
        {
            static int x = 0;
            QGraphicsWidget *w = scene()->addWidget(new QWidget);
            w->setPos(x, x);
            x += 2;
        }
};

#include "main.moc"

int main(int argc, char **argv)
{
    QApplication a(argc, argv);
    QTabWidget tabWidget;
    QPushButton menuButton("Menu button");
    MyGraphicsView gv;

    QMenu *menu = new QMenu(&menuButton);
    menu->addAction("Dummy");
    menuButton.setMenu(menu);

    tabWidget.addTab(&gv, "Insert Widget Test");
    tabWidget.setCornerWidget(&menuButton);
    tabWidget.show();
    return a.exec();
}