Revision control
++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QApplication>
++ #include <QGraphicsView>
++
++ #include "knob.h"
++
++ int main(int argc, char **argv)
++ {
++ QApplication app(argc, argv);
++
++ QGraphicsScene scene;
++ QGraphicsView view(&scene);
++ view.setRenderHints(QPainter::Antialiasing);
++
++ Knob *knob1 = new Knob;
++ knob1->setPos(-110, 0);
++ Knob *knob2 = new Knob;
++
++ scene.addItem(knob1);
++ scene.addItem(knob2);
++
++ view.showMaximized();
++ view.fitInView(scene.sceneRect().adjusted(-20, -20, 20, 20), Qt::KeepAspectRatio);
++
++ return app.exec();
++ }