How to use QGraphicsView?

I'm trying to get QGraphicsView and QGraphicsScene work (in one file), but it doesnt. Dont laugh, im beginner:D

Code:

#include <QApplication>
#include <QFont>
#include <QPushButton>
#include <QWidget>
#include <QGraphicsView>
 
class graphics : QGraphicsScene {
    Q_OBJECT;
public:
    graphics(QWidget* parent = 0);
};
 
graphics::graphics(QWidget * parent) : QGraphicsScene {
    QGraphicsView view(this);
}
 
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    graphics Graphics;
    Graphics.show();
    return app.exec();
}

Oh and if you have a tutorial it would be great.. I googled for 15 min.

Added after 11 minutes:

Np fixed it!!