problem with QGraphicsPixmapItem

[JustJ]

Hello everyone,
I am trying to display an image using QGraphicsView but all I get is a blank window.
Here is the code:

int main(int argc, char *argv[])
{
    QApplication a(argc, argv)
    QGraphicsView view;
    QGraphicsScene* scene = new QGraphicsScene(QRect(0, 0, 600, 400));
    QPixmap Pix("king.png");
    //does not work either
    //QGraphicsPixmapItem *item1 = scene->addPixmap(Pix);
    QGraphicsPixmapItem *item = new QGraphicsPixmapItem(Pix);
    scene->addItem(item);
    view.setScene(scene);
    view.show();
    return a.exec();
}

int main(int argc, char *argv[])
{
    QApplication a(argc, argv)
    QGraphicsView view;
    QGraphicsScene* scene = new QGraphicsScene(QRect(0, 0, 600, 400));
    QPixmap Pix("king.png");
    //does not work either
    //QGraphicsPixmapItem *item1 = scene->addPixmap(Pix);
    QGraphicsPixmapItem *item = new QGraphicsPixmapItem(Pix);
    scene->addItem(item);
    view.setScene(scene);
    view.show();
    return a.exec();
}

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I think that I'm missing something obvious, but still I'm unable to find it on my own.
Any suggestions?