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50
51#include <QtCore/QObject>
52#include <QtCore/QDebug>
53#include <QtCore/QVariant>
54#include <QtPositioning/QGeoAddress>
55#include <QtPositioning/QGeoLocation>
56#include <QtPositioning/QGeoCircle>
57#include <QtPositioning/QGeoAreaMonitorSource>
58
59void cppQmlInterface(QObject *qmlObject)
60{
61 //! [Address get]
62 QGeoAddress geoAddress = qmlObject->property(name: "address").value<QGeoAddress>();
63 //! [Address get]
64
65 //! [Address set]
66 qmlObject->setProperty(name: "address", value: QVariant::fromValue(value: geoAddress));
67 //! [Address set]
68
69 //! [Location get]
70 QGeoLocation geoLocation = qmlObject->property(name: "location").value<QGeoLocation>();
71 //! [Location get]
72
73 //! [Location set]
74 qmlObject->setProperty(name: "location", value: QVariant::fromValue(value: geoLocation));
75 //! [Location set]
76}
77
78class MyClass : public QObject
79{
80 Q_OBJECT
81//! [BigBen]
82public:
83 MyClass() : QObject()
84 {
85 QGeoAreaMonitorSource *monitor = QGeoAreaMonitorSource::createDefaultSource(parent: this);
86 if (monitor) {
87 connect(sender: monitor, SIGNAL(areaEntered(QGeoAreaMonitorInfo,QGeoPositionInfo)),
88 receiver: this, SLOT(areaEntered(QGeoAreaMonitorInfo,QGeoPositionInfo)));
89 connect(sender: monitor, SIGNAL(areaExited(QGeoAreaMonitorInfo,QGeoPositionInfo)),
90 receiver: this, SLOT(areaExited(QGeoAreaMonitorInfo,QGeoPositionInfo)));
91
92 QGeoAreaMonitorInfo bigBen("Big Ben");
93 QGeoCoordinate position(51.50104, -0.124632);
94 bigBen.setArea(QGeoCircle(position, 100));
95
96 monitor->startMonitoring(monitor: bigBen);
97
98 } else {
99 qDebug() << "Could not create default area monitor";
100 }
101 }
102
103public Q_SLOTS:
104 void areaEntered(const QGeoAreaMonitorInfo &mon, const QGeoPositionInfo &update)
105 {
106 Q_UNUSED(mon);
107
108 qDebug() << "Now within 100 meters, current position is" << update.coordinate();
109 }
110
111 void areaExited(const QGeoAreaMonitorInfo &mon, const QGeoPositionInfo &update)
112 {
113 Q_UNUSED(mon);
114
115 qDebug() << "No longer within 100 meters, current position is" << update.coordinate();
116 }
117//! [BigBen]
118};
119

source code of qtlocation/src/positioning/doc/snippets/cpp/cppqml.cpp