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#include <QtCore>

#include <qproximitysensor.h>

QTM_USE_NAMESPACE

class ProximitySensorFilter : public QProximityFilter

{

public:

    qtimestamp stamp;

    bool filter(QProximityReading *reading)

    {

        int diff = ( reading->timestamp() - stamp );

        stamp = reading->timestamp();

        QTextStream out(stdout);

        out << "Proximity: ";

        if (reading->close())

            out << "Close    ";

        else

            out << "Not close";

        out << QString(" (%1 ms since last, %2 Hz)").arg(diff / 1000, 5).arg( 1000000.0 / diff, 3, 'f', 1) << endl;

        return false; // don't store the reading in the sensor

    }

};

int main(int argc, char **argv)

{

    QCoreApplication app(argc, argv);

    QProximitySensor sensor;

    }

    ProximitySensorFilter filter;

    sensor.addFilter(&filter);

    sensor.start();

    return app.exec();

}