#include <iostream>
#include <boost/format.hpp>
#include <QtGui>
#include <CGAL/Qt/GraphicsViewNavigation.h>
#include <QLineF>
#include <QRectF>
#include <QApplication>
#include <QGraphicsScene>
#include <QGraphicsView>

int main(int argc, char **argv)
{
    QApplication app(argc, argv);


    QGraphicsScene scene;
    scene.setSceneRect(0,0, 100, 100);
    scene.addRect(QRectF(0,0, 100, 100));
    scene.addLine(QLineF(0,0, 100, 100));
    scene.addLine(QLineF(0,100, 100, 0));

    QGraphicsView* view = new QGraphicsView(&scene);
    CGAL::Qt::GraphicsViewNavigation navigation;
    view->installEventFilter(&navigation);
    view->viewport()->installEventFilter(&navigation);
    view->setRenderHint(QPainter::Antialiasing);

    view->show();
    return app.exec();
}