QApplication a(argc, argv);

// create a scene

QGraphicsScene * scene = new QGraphicsScene();

// create an item to add to the scene

MyRect * rect = new MyRect();

rect->setRect(0,0,100,100); // change the rect from 0x0 (default) to 100x100 pixels

// add the item to the scene

scene->addItem(rect);

// make rect focusable

rect->setFlag(QGraphicsItem::ItemIsFocusable);

rect->setFocus();

// create a view to visualize the scene

QGraphicsView * view = new QGraphicsView(scene);

view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

// show the view

view->show();

//==new code==

return a.exec();