Make QtSensors use Q_DECL_OVERRIDE

This patch aims to make QtSensors uses Q_DECL_OVERRIDE uniformly across
the module

Task-number: QTBUG-27392
Change-Id: I5f814f93307159175f92e29a9990587c03cce96f
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>

64 files changed, 177 insertions, 173 deletions

diff --git a/src/plugins/sensorgestures/qtsensors/qcoversensorgesturerecognizer.h b/src/plugins/sensorgestures/qtsensors/qcoversensorgesturerecognizer.h
index 8df8e65e..5df98cc2 100644
--- a/src/plugins/sensorgestures/qtsensors/qcoversensorgesturerecognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qcoversensorgesturerecognizer.h
@@ -57,12 +57,12 @@ public:
     explicit QCoverSensorGestureRecognizer(QObject *parent = 0);
     ~QCoverSensorGestureRecognizer();
 
-    void create();
+    void create() Q_DECL_OVERRIDE;
 
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
 Q_SIGNALS:
     void cover();
diff --git a/src/plugins/sensorgestures/qtsensors/qdoubletapsensorgesturerecognizer.h b/src/plugins/sensorgestures/qtsensors/qdoubletapsensorgesturerecognizer.h
index a4e74cce..e1e660b3 100644
--- a/src/plugins/sensorgestures/qtsensors/qdoubletapsensorgesturerecognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qdoubletapsensorgesturerecognizer.h
@@ -58,11 +58,12 @@ public:
     explicit QDoubleTapSensorGestureRecognizer(QObject *parent = 0);
     ~QDoubleTapSensorGestureRecognizer();
 
-    void create();
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    void create() Q_DECL_OVERRIDE;
+
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
 Q_SIGNALS:
     void doubletap();
diff --git a/src/plugins/sensorgestures/qtsensors/qfreefallsensorgesturerecognizer.h b/src/plugins/sensorgestures/qtsensors/qfreefallsensorgesturerecognizer.h
index 094d0c6e..9f72582a 100644
--- a/src/plugins/sensorgestures/qtsensors/qfreefallsensorgesturerecognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qfreefallsensorgesturerecognizer.h
@@ -57,12 +57,12 @@ public:
     explicit QFreefallSensorGestureRecognizer(QObject *parent = 0);
     ~QFreefallSensorGestureRecognizer();
 
-    void create();
+    void create() Q_DECL_OVERRIDE;
 
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
 Q_SIGNALS:
     void freefall();
diff --git a/src/plugins/sensorgestures/qtsensors/qhoversensorgesturerecognizer.h b/src/plugins/sensorgestures/qtsensors/qhoversensorgesturerecognizer.h
index cb9d81aa..d8dc0097 100644
--- a/src/plugins/sensorgestures/qtsensors/qhoversensorgesturerecognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qhoversensorgesturerecognizer.h
@@ -57,11 +57,12 @@ public:
     explicit QHoverSensorGestureRecognizer(QObject *parent = 0);
     ~QHoverSensorGestureRecognizer();
 
-    void create();
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    void create() Q_DECL_OVERRIDE;
+
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
 Q_SIGNALS:
     void hover();
diff --git a/src/plugins/sensorgestures/qtsensors/qpickupsensorgesturerecognizer.h b/src/plugins/sensorgestures/qtsensors/qpickupsensorgesturerecognizer.h
index 2fd249fc..37f66058 100644
--- a/src/plugins/sensorgestures/qtsensors/qpickupsensorgesturerecognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qpickupsensorgesturerecognizer.h
@@ -55,12 +55,12 @@ public:
     explicit QPickupSensorGestureRecognizer(QObject *parent = 0);
     ~QPickupSensorGestureRecognizer();
 
-    void create();
+    void create() Q_DECL_OVERRIDE;
 
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
 Q_SIGNALS:
     void pickup();
diff --git a/src/plugins/sensorgestures/qtsensors/qshake2recognizer.h b/src/plugins/sensorgestures/qtsensors/qshake2recognizer.h
index 232d2adc..647b713f 100644
--- a/src/plugins/sensorgestures/qtsensors/qshake2recognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qshake2recognizer.h
@@ -73,12 +73,12 @@ public:
     QShake2SensorGestureRecognizer(QObject *parent = 0);
     ~QShake2SensorGestureRecognizer();
 
-    void create();
+    void create() Q_DECL_OVERRIDE;
 
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
     int timerTimeout;
 
diff --git a/src/plugins/sensorgestures/qtsensors/qslamgesturerecognizer.h b/src/plugins/sensorgestures/qtsensors/qslamgesturerecognizer.h
index 49450334..5dba87a5 100644
--- a/src/plugins/sensorgestures/qtsensors/qslamgesturerecognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qslamgesturerecognizer.h
@@ -56,12 +56,12 @@ public:
     explicit QSlamSensorGestureRecognizer(QObject *parent = 0);
     ~QSlamSensorGestureRecognizer();
 
-    void create();
+    void create() Q_DECL_OVERRIDE;
 
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
 Q_SIGNALS:
     void slam();
diff --git a/src/plugins/sensorgestures/qtsensors/qtsensorgestureplugin.h b/src/plugins/sensorgestures/qtsensors/qtsensorgestureplugin.h
index 848a4f08..34455ace 100644
--- a/src/plugins/sensorgestures/qtsensors/qtsensorgestureplugin.h
+++ b/src/plugins/sensorgestures/qtsensors/qtsensorgestureplugin.h
@@ -58,11 +58,11 @@ class QtSensorGesturePlugin : public QObject, public QSensorGesturePluginInterfa
 public:
     explicit QtSensorGesturePlugin();
     ~QtSensorGesturePlugin();
-    QList <QSensorGestureRecognizer *> createRecognizers();
+    QList <QSensorGestureRecognizer *> createRecognizers() Q_DECL_OVERRIDE;
 
     QStringList gestureSignals() const;
-    QStringList supportedIds() const;
-    QString name() const { return "QtSensorGestures"; }
+    QStringList supportedIds() const Q_DECL_OVERRIDE;
+    QString name() const Q_DECL_OVERRIDE { return "QtSensorGestures"; }
 
 };
 
diff --git a/src/plugins/sensorgestures/qtsensors/qturnoversensorgesturerecognizer.h b/src/plugins/sensorgestures/qtsensors/qturnoversensorgesturerecognizer.h
index 3319ac50..1729f3ee 100644
--- a/src/plugins/sensorgestures/qtsensors/qturnoversensorgesturerecognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qturnoversensorgesturerecognizer.h
@@ -53,11 +53,13 @@ class QTurnoverSensorGestureRecognizer : public QSensorGestureRecognizer
 public:
     explicit QTurnoverSensorGestureRecognizer(QObject *parent = 0);
     ~QTurnoverSensorGestureRecognizer();
-    void create();
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+
+    void create() Q_DECL_OVERRIDE;
+
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
 Q_SIGNALS:
     void turnover();
diff --git a/src/plugins/sensorgestures/qtsensors/qtwistsensorgesturerecognizer.h b/src/plugins/sensorgestures/qtsensors/qtwistsensorgesturerecognizer.h
index a4b9ceb4..5db192af 100644
--- a/src/plugins/sensorgestures/qtsensors/qtwistsensorgesturerecognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qtwistsensorgesturerecognizer.h
@@ -63,12 +63,12 @@ public:
     explicit QTwistSensorGestureRecognizer(QObject *parent = 0);
     ~QTwistSensorGestureRecognizer();
 
-    void create();
+    void create() Q_DECL_OVERRIDE;
 
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
 Q_SIGNALS:
     void twistLeft();
diff --git a/src/plugins/sensorgestures/qtsensors/qwhipsensorgesturerecognizer.h b/src/plugins/sensorgestures/qtsensors/qwhipsensorgesturerecognizer.h
index e3ad7a05..a8aef52e 100644
--- a/src/plugins/sensorgestures/qtsensors/qwhipsensorgesturerecognizer.h
+++ b/src/plugins/sensorgestures/qtsensors/qwhipsensorgesturerecognizer.h
@@ -56,12 +56,12 @@ public:
     explicit QWhipSensorGestureRecognizer(QObject *parent = 0);
     ~QWhipSensorGestureRecognizer();
 
-    void create();
+    void create() Q_DECL_OVERRIDE;
 
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
 Q_SIGNALS:
     void whip();
diff --git a/src/plugins/sensorgestures/shake/qshakerecognizer.h b/src/plugins/sensorgestures/shake/qshakerecognizer.h
index f34a3770..e7478b6a 100644
--- a/src/plugins/sensorgestures/shake/qshakerecognizer.h
+++ b/src/plugins/sensorgestures/shake/qshakerecognizer.h
@@ -66,12 +66,12 @@ public:
     QShakeSensorGestureRecognizer(QObject *parent = 0);
     ~QShakeSensorGestureRecognizer();
 
-    void create();
+    void create() Q_DECL_OVERRIDE;
 
-    QString id() const;
-    bool start();
-    bool stop();
-    bool isActive();
+    QString id() const Q_DECL_OVERRIDE;
+    bool start() Q_DECL_OVERRIDE;
+    bool stop() Q_DECL_OVERRIDE;
+    bool isActive() Q_DECL_OVERRIDE;
 
     QTimer *timer;
     int timerTimeout;
diff --git a/src/plugins/sensorgestures/shake/qshakesensorgestureplugin.h b/src/plugins/sensorgestures/shake/qshakesensorgestureplugin.h
index ea69dd0a..939b2a9c 100644
--- a/src/plugins/sensorgestures/shake/qshakesensorgestureplugin.h
+++ b/src/plugins/sensorgestures/shake/qshakesensorgestureplugin.h
@@ -57,11 +57,11 @@ public:
     explicit QShakeSensorGesturePlugin();
     ~QShakeSensorGesturePlugin();
 
-    QList <QSensorGestureRecognizer *> createRecognizers();
+    QList <QSensorGestureRecognizer *> createRecognizers() Q_DECL_OVERRIDE;
 
     QStringList gestureSignals() const;
-    QStringList supportedIds() const;
-    QString name() const { return "ShakeGestures"; }
+    QStringList supportedIds() const Q_DECL_OVERRIDE;
+    QString name() const Q_DECL_OVERRIDE { return "ShakeGestures"; }
 };
 
 #endif // QSHAKESENSORGESTUREPLUGIN_H
diff --git a/src/plugins/sensors/android/src/androidaccelerometer.h b/src/plugins/sensors/android/src/androidaccelerometer.h
index 6c95fdb3..31363014 100644
--- a/src/plugins/sensors/android/src/androidaccelerometer.h
+++ b/src/plugins/sensors/android/src/androidaccelerometer.h
@@ -51,8 +51,8 @@ public:
     AndroidAccelerometer(AndroidSensors::AndroidSensorType type, QSensor *sensor);
 
 private:
-    virtual void onAccuracyChanged(jint accuracy);
-    virtual void onSensorChanged(jlong timestamp, const jfloat *values, uint size);
+    void onAccuracyChanged(jint accuracy) Q_DECL_OVERRIDE;
+    void onSensorChanged(jlong timestamp, const jfloat *values, uint size) Q_DECL_OVERRIDE;
 
 };
 
diff --git a/src/plugins/sensors/android/src/androidcommonsensor.h b/src/plugins/sensors/android/src/androidcommonsensor.h
index 40f118ed..396f4105 100644
--- a/src/plugins/sensors/android/src/androidcommonsensor.h
+++ b/src/plugins/sensors/android/src/androidcommonsensor.h
@@ -63,13 +63,13 @@ public:
         if (m_isStarted)
             stop();
     }
-    virtual void start()
+    void start() Q_DECL_OVERRIDE
     {
         if (AndroidSensors::registerListener(m_type, this, sensor()->dataRate()))
             m_isStarted = true;
     }
 
-    virtual void stop()
+    void stop() Q_DECL_OVERRIDE
     {
         if (m_isStarted) {
             m_isStarted = false;
diff --git a/src/plugins/sensors/android/src/androidgyroscope.h b/src/plugins/sensors/android/src/androidgyroscope.h
index 3b633b7c..15e1ebbd 100644
--- a/src/plugins/sensors/android/src/androidgyroscope.h
+++ b/src/plugins/sensors/android/src/androidgyroscope.h
@@ -50,8 +50,8 @@ class AndroidGyroscope : public AndroidCommonSensor<QGyroscopeReading>
 public:
     AndroidGyroscope(AndroidSensors::AndroidSensorType type, QSensor *sensor);
 private:
-    virtual void onAccuracyChanged(jint accuracy);
-    virtual void onSensorChanged(jlong timestamp, const jfloat *values, uint size);
+    void onAccuracyChanged(jint accuracy) Q_DECL_OVERRIDE;
+    void onSensorChanged(jlong timestamp, const jfloat *values, uint size) Q_DECL_OVERRIDE;
 };
 
 #endif // ANDROIDGYROSCOPE_H
diff --git a/src/plugins/sensors/android/src/androidlight.h b/src/plugins/sensors/android/src/androidlight.h
index fdea3edb..5cf44286 100644
--- a/src/plugins/sensors/android/src/androidlight.h
+++ b/src/plugins/sensors/android/src/androidlight.h
@@ -50,8 +50,8 @@ class AndroidLight : public AndroidCommonSensor<QLightReading>
 public:
     AndroidLight(AndroidSensors::AndroidSensorType type, QSensor *sensor);
 private:
-    virtual void onAccuracyChanged(jint accuracy);
-    virtual void onSensorChanged(jlong timestamp, const jfloat *values, uint size);
+    void onAccuracyChanged(jint accuracy) Q_DECL_OVERRIDE;
+    void onSensorChanged(jlong timestamp, const jfloat *values, uint size) Q_DECL_OVERRIDE;
 };
 
 #endif // ANDROIDLIGHT_H
diff --git a/src/plugins/sensors/android/src/androidmagnetometer.h b/src/plugins/sensors/android/src/androidmagnetometer.h
index 57d9f36d..3f1a59c2 100644
--- a/src/plugins/sensors/android/src/androidmagnetometer.h
+++ b/src/plugins/sensors/android/src/androidmagnetometer.h
@@ -50,8 +50,8 @@ class AndroidMagnetometer : public AndroidCommonSensor<QMagnetometerReading>
 public:
     AndroidMagnetometer(AndroidSensors::AndroidSensorType type, QSensor *sensor);
 private:
-    virtual void onAccuracyChanged(jint accuracy);
-    virtual void onSensorChanged(jlong timestamp, const jfloat *values, uint size);
+    void onAccuracyChanged(jint accuracy) Q_DECL_OVERRIDE;
+    void onSensorChanged(jlong timestamp, const jfloat *values, uint size) Q_DECL_OVERRIDE;
 };
 
 #endif // ANDROIDMAGNETOMETER_H
diff --git a/src/plugins/sensors/android/src/androidproximity.h b/src/plugins/sensors/android/src/androidproximity.h
index 1911798d..b036d896 100644
--- a/src/plugins/sensors/android/src/androidproximity.h
+++ b/src/plugins/sensors/android/src/androidproximity.h
@@ -51,8 +51,8 @@ class AndroidProximity : public AndroidCommonSensor<QProximityReading>
 public:
     AndroidProximity(AndroidSensors::AndroidSensorType type, QSensor *sensor);
 private:
-    virtual void onAccuracyChanged(jint accuracy);
-    virtual void onSensorChanged(jlong timestamp, const jfloat *values, uint size);
+    void onAccuracyChanged(jint accuracy) Q_DECL_OVERRIDE;
+    void onSensorChanged(jlong timestamp, const jfloat *values, uint size) Q_DECL_OVERRIDE;
     qreal m_maximumRange;
 };
 
diff --git a/src/plugins/sensors/android/src/androidrotation.h b/src/plugins/sensors/android/src/androidrotation.h
index cd2c4d65..63a8e0f1 100644
--- a/src/plugins/sensors/android/src/androidrotation.h
+++ b/src/plugins/sensors/android/src/androidrotation.h
@@ -49,8 +49,8 @@ class AndroidRotation : public AndroidCommonSensor<QRotationReading>
 public:
     AndroidRotation(AndroidSensors::AndroidSensorType type, QSensor *sensor);
 private:
-    virtual void onAccuracyChanged(jint accuracy);
-    virtual void onSensorChanged(jlong timestamp, const jfloat *values, uint size);
+    void onAccuracyChanged(jint accuracy) Q_DECL_OVERRIDE;
+    void onSensorChanged(jlong timestamp, const jfloat *values, uint size) Q_DECL_OVERRIDE;
 };
 
 #endif // ANDROIDROTATION_H
diff --git a/src/plugins/sensors/android/src/androidtemperature.h b/src/plugins/sensors/android/src/androidtemperature.h
index 667169cd..67250931 100644
--- a/src/plugins/sensors/android/src/androidtemperature.h
+++ b/src/plugins/sensors/android/src/androidtemperature.h
@@ -51,8 +51,8 @@ class AndroidTemperature : public AndroidCommonSensor<QAmbientTemperatureReading
 public:
     AndroidTemperature(AndroidSensors::AndroidSensorType type, QSensor *sensor);
 private:
-    virtual void onAccuracyChanged(jint accuracy);
-    virtual void onSensorChanged(jlong timestamp, const jfloat *values, uint size);
+    void onAccuracyChanged(jint accuracy) Q_DECL_OVERRIDE;
+    void onSensorChanged(jlong timestamp, const jfloat *values, uint size) Q_DECL_OVERRIDE;
 };
 
 #endif // ANDROIDTEMPERATURE_H
diff --git a/src/plugins/sensors/dummy/dummyaccelerometer.h b/src/plugins/sensors/dummy/dummyaccelerometer.h
index a469e395..ae48dd0e 100644
--- a/src/plugins/sensors/dummy/dummyaccelerometer.h
+++ b/src/plugins/sensors/dummy/dummyaccelerometer.h
@@ -52,7 +52,7 @@ public:
 
     dummyaccelerometer(QSensor *sensor);
 
-    void poll();
+    void poll() Q_DECL_OVERRIDE;
 private:
     QAccelerometerReading m_reading;
 };
diff --git a/src/plugins/sensors/dummy/dummycommon.h b/src/plugins/sensors/dummy/dummycommon.h
index a17bd9dd..5816e895 100644
--- a/src/plugins/sensors/dummy/dummycommon.h
+++ b/src/plugins/sensors/dummy/dummycommon.h
@@ -50,10 +50,10 @@ class dummycommon : public QSensorBackend
 public:
     dummycommon(QSensor *sensor);
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
     virtual void poll() = 0;
-    void timerEvent(QTimerEvent * /*event*/);
+    void timerEvent(QTimerEvent * /*event*/) Q_DECL_OVERRIDE;
 
 protected:
     quint64 getTimestamp();
diff --git a/src/plugins/sensors/dummy/dummylightsensor.h b/src/plugins/sensors/dummy/dummylightsensor.h
index edd95a3a..7279ea29 100644
--- a/src/plugins/sensors/dummy/dummylightsensor.h
+++ b/src/plugins/sensors/dummy/dummylightsensor.h
@@ -52,7 +52,7 @@ public:
 
     dummylightsensor(QSensor *sensor);
 
-    void poll();
+    void poll() Q_DECL_OVERRIDE;
 private:
     QAmbientLightReading m_reading;
 };
diff --git a/src/plugins/sensors/generic/genericalssensor.h b/src/plugins/sensors/generic/genericalssensor.h
index 9665745f..1ed6e76e 100644
--- a/src/plugins/sensors/generic/genericalssensor.h
+++ b/src/plugins/sensors/generic/genericalssensor.h
@@ -53,10 +53,10 @@ public:
 
     genericalssensor(QSensor *sensor);
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
-    bool filter(QLightReading *reading);
+    bool filter(QLightReading *reading) Q_DECL_OVERRIDE;
 
 private:
     QAmbientLightReading m_reading;
diff --git a/src/plugins/sensors/generic/genericorientationsensor.h b/src/plugins/sensors/generic/genericorientationsensor.h
index c212c1be..d1e7d343 100644
--- a/src/plugins/sensors/generic/genericorientationsensor.h
+++ b/src/plugins/sensors/generic/genericorientationsensor.h
@@ -53,10 +53,10 @@ public:
 
     genericorientationsensor(QSensor *sensor);
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
-    bool filter(QAccelerometerReading *reading);
+    bool filter(QAccelerometerReading *reading) Q_DECL_OVERRIDE;
 
 private:
     QOrientationReading m_reading;
diff --git a/src/plugins/sensors/generic/genericrotationsensor.h b/src/plugins/sensors/generic/genericrotationsensor.h
index ffa48ea3..693528fa 100644
--- a/src/plugins/sensors/generic/genericrotationsensor.h
+++ b/src/plugins/sensors/generic/genericrotationsensor.h
@@ -54,10 +54,10 @@ public:
 
     genericrotationsensor(QSensor *sensor);
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 
 private:
     QRotationReading m_reading;
diff --git a/src/plugins/sensors/generic/generictiltsensor.h b/src/plugins/sensors/generic/generictiltsensor.h
index 0f84ca6f..f62c1f58 100644
--- a/src/plugins/sensors/generic/generictiltsensor.h
+++ b/src/plugins/sensors/generic/generictiltsensor.h
@@ -56,12 +56,12 @@ public:
 
     GenericTiltSensor(QSensor *sensor);
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
     void calibrate();
 
-    bool filter(QAccelerometerReading *reading);
+    bool filter(QAccelerometerReading *reading) Q_DECL_OVERRIDE;
 
     bool isFeatureSupported(QSensor::Feature feature) const Q_DECL_OVERRIDE;
 
diff --git a/src/plugins/sensors/ios/iosaccelerometer.h b/src/plugins/sensors/ios/iosaccelerometer.h
index 1a6560b1..ba6235f3 100644
--- a/src/plugins/sensors/ios/iosaccelerometer.h
+++ b/src/plugins/sensors/ios/iosaccelerometer.h
@@ -55,10 +55,10 @@ public:
     static char const * const id;
 
     explicit IOSAccelerometer(QSensor *sensor);
-    void timerEvent(QTimerEvent *);
+    void timerEvent(QTimerEvent *) Q_DECL_OVERRIDE;
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
 private:
     CMMotionManager *m_motionManager;
diff --git a/src/plugins/sensors/ios/ioscompass.h b/src/plugins/sensors/ios/ioscompass.h
index c33cf1fd..849da9fb 100644
--- a/src/plugins/sensors/ios/ioscompass.h
+++ b/src/plugins/sensors/ios/ioscompass.h
@@ -57,8 +57,8 @@ public:
     explicit IOSCompass(QSensor *sensor);
     ~IOSCompass();
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
     void headingChanged(qreal heading, quint64 timestamp, qreal calibrationLevel);
 
diff --git a/src/plugins/sensors/ios/iosgyroscope.h b/src/plugins/sensors/ios/iosgyroscope.h
index 4f4c399a..31f89e3a 100644
--- a/src/plugins/sensors/ios/iosgyroscope.h
+++ b/src/plugins/sensors/ios/iosgyroscope.h
@@ -55,10 +55,10 @@ public:
     static char const * const id;
 
     explicit IOSGyroscope(QSensor *sensor);
-    void timerEvent(QTimerEvent *);
+    void timerEvent(QTimerEvent *) Q_DECL_OVERRIDE;
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
 private:
     CMMotionManager *m_motionManager;
diff --git a/src/plugins/sensors/ios/iosmagnetometer.h b/src/plugins/sensors/ios/iosmagnetometer.h
index b0dc848a..7f95faf8 100644
--- a/src/plugins/sensors/ios/iosmagnetometer.h
+++ b/src/plugins/sensors/ios/iosmagnetometer.h
@@ -55,10 +55,10 @@ public:
     static char const * const id;
 
     explicit IOSMagnetometer(QSensor *sensor);
-    void timerEvent(QTimerEvent *);
+    void timerEvent(QTimerEvent *) Q_DECL_OVERRIDE;
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
     void startMagnetometer();
     void startDeviceMotion();
diff --git a/src/plugins/sensors/ios/iosproximitysensor.h b/src/plugins/sensors/ios/iosproximitysensor.h
index 67885126..52da8d2b 100644
--- a/src/plugins/sensors/ios/iosproximitysensor.h
+++ b/src/plugins/sensors/ios/iosproximitysensor.h
@@ -57,8 +57,8 @@ public:
     explicit IOSProximitySensor(QSensor *sensor);
     ~IOSProximitySensor();
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
     void proximityChanged(bool close);
     static bool available();
diff --git a/src/plugins/sensors/linux/linuxsysaccelerometer.h b/src/plugins/sensors/linux/linuxsysaccelerometer.h
index 8ffc28fa..76dfe3ba 100644
--- a/src/plugins/sensors/linux/linuxsysaccelerometer.h
+++ b/src/plugins/sensors/linux/linuxsysaccelerometer.h
@@ -55,10 +55,10 @@ public:
     LinuxSysAccelerometer(QSensor *sensor);
     ~LinuxSysAccelerometer();
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
     void poll();
-    void timerEvent(QTimerEvent * /*event*/);
+    void timerEvent(QTimerEvent * /*event*/) Q_DECL_OVERRIDE;
 
 private:
     QAccelerometerReading m_reading;
diff --git a/src/plugins/sensors/sensorfw/sensorfwaccelerometer.h b/src/plugins/sensors/sensorfw/sensorfwaccelerometer.h
index 25ef1443..e0e84cc3 100644
--- a/src/plugins/sensors/sensorfw/sensorfwaccelerometer.h
+++ b/src/plugins/sensors/sensorfw/sensorfwaccelerometer.h
@@ -57,10 +57,10 @@ public:
     static char const * const id;
     sensorfwaccelerometer(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual QString sensorName() const;
-    virtual qreal correctionFactor() const;
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    qreal correctionFactor() const Q_DECL_OVERRIDE;
+    virtual void init();
 
 private:
     QAccelerometerReading m_reading;
diff --git a/src/plugins/sensors/sensorfw/sensorfwals.h b/src/plugins/sensors/sensorfw/sensorfwals.h
index f0b91a9a..b3325f03 100644
--- a/src/plugins/sensors/sensorfw/sensorfwals.h
+++ b/src/plugins/sensors/sensorfw/sensorfwals.h
@@ -57,10 +57,10 @@ public:
     static char const * const id;
     Sensorfwals(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual QString sensorName() const;
-    virtual void start();
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    void start() Q_DECL_OVERRIDE;
+    virtual void init();
 
 private:
     QAmbientLightReading m_reading;
diff --git a/src/plugins/sensors/sensorfw/sensorfwcompass.h b/src/plugins/sensors/sensorfw/sensorfwcompass.h
index 1bb7e6ea..951435c8 100644
--- a/src/plugins/sensors/sensorfw/sensorfwcompass.h
+++ b/src/plugins/sensors/sensorfw/sensorfwcompass.h
@@ -57,9 +57,9 @@ public:
     static char const * const id;
     SensorfwCompass(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual QString sensorName() const;
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    virtual void init();
 private:
     QCompassReading m_reading;
     bool m_initDone;
diff --git a/src/plugins/sensors/sensorfw/sensorfwgyroscope.h b/src/plugins/sensors/sensorfw/sensorfwgyroscope.h
index 30b95791..f489bf6b 100644
--- a/src/plugins/sensors/sensorfw/sensorfwgyroscope.h
+++ b/src/plugins/sensors/sensorfw/sensorfwgyroscope.h
@@ -59,10 +59,10 @@ public:
     static char const * const id;
     SensorfwGyroscope(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual QString sensorName() const;
-    virtual qreal correctionFactor() const;
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    qreal correctionFactor() const Q_DECL_OVERRIDE;
+    virtual void init();
 
 private:
     QGyroscopeReading m_reading;
diff --git a/src/plugins/sensors/sensorfw/sensorfwirproximitysensor.h b/src/plugins/sensors/sensorfw/sensorfwirproximitysensor.h
index fce0234b..642570d3 100644
--- a/src/plugins/sensors/sensorfw/sensorfwirproximitysensor.h
+++ b/src/plugins/sensors/sensorfw/sensorfwirproximitysensor.h
@@ -56,9 +56,9 @@ public:
 
     SensorfwIrProximitySensor(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual QString sensorName() const;
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    virtual void init();
 private:
     QIRProximityReading m_reading;
     bool m_initDone;
diff --git a/src/plugins/sensors/sensorfw/sensorfwlightsensor.h b/src/plugins/sensors/sensorfw/sensorfwlightsensor.h
index f9394c3d..244f795f 100644
--- a/src/plugins/sensors/sensorfw/sensorfwlightsensor.h
+++ b/src/plugins/sensors/sensorfw/sensorfwlightsensor.h
@@ -57,9 +57,9 @@ public:
     static char const * const id;
     SensorfwLightSensor(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual QString sensorName() const;
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    virtual void init();
 private:
     QLightReading m_reading;
     bool m_initDone;
diff --git a/src/plugins/sensors/sensorfw/sensorfwmagnetometer.h b/src/plugins/sensors/sensorfw/sensorfwmagnetometer.h
index d86bd043..162fa065 100644
--- a/src/plugins/sensors/sensorfw/sensorfwmagnetometer.h
+++ b/src/plugins/sensors/sensorfw/sensorfwmagnetometer.h
@@ -58,11 +58,11 @@ public:
     static char const * const id;
     SensorfwMagnetometer(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual void start();
-    virtual QString sensorName() const;
-    virtual qreal correctionFactor() const;
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    void start() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    qreal correctionFactor() const Q_DECL_OVERRIDE;
+    virtual void init();
 
 private:
     static const float NANO;
diff --git a/src/plugins/sensors/sensorfw/sensorfworientationsensor.h b/src/plugins/sensors/sensorfw/sensorfworientationsensor.h
index 139761a5..9e55ff34 100644
--- a/src/plugins/sensors/sensorfw/sensorfworientationsensor.h
+++ b/src/plugins/sensors/sensorfw/sensorfworientationsensor.h
@@ -57,10 +57,10 @@ public:
     static char const * const id;
     SensorfwOrientationSensor(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual QString sensorName() const;
-    virtual void start();
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    void start() Q_DECL_OVERRIDE;
+    virtual void init();
 private:
     QOrientationReading m_reading;
     static QOrientationReading::Orientation getOrientation(int orientation);
diff --git a/src/plugins/sensors/sensorfw/sensorfwproximitysensor.h b/src/plugins/sensors/sensorfw/sensorfwproximitysensor.h
index 6558447d..caaa9b97 100644
--- a/src/plugins/sensors/sensorfw/sensorfwproximitysensor.h
+++ b/src/plugins/sensors/sensorfw/sensorfwproximitysensor.h
@@ -57,10 +57,10 @@ public:
     static char const * const id;
     SensorfwProximitySensor(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual QString sensorName() const;
-    virtual void start();
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    void start() Q_DECL_OVERRIDE;
+    virtual void init();
 
 private:
     QProximityReading m_reading;
diff --git a/src/plugins/sensors/sensorfw/sensorfwrotationsensor.h b/src/plugins/sensors/sensorfw/sensorfwrotationsensor.h
index 1f237cf4..dd415201 100644
--- a/src/plugins/sensors/sensorfw/sensorfwrotationsensor.h
+++ b/src/plugins/sensors/sensorfw/sensorfwrotationsensor.h
@@ -59,9 +59,9 @@ public:
     static char const * const id;
     SensorfwRotationSensor(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual QString sensorName() const;
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    virtual void init();
 private:
     QRotationReading m_reading;
     bool m_initDone;
diff --git a/src/plugins/sensors/sensorfw/sensorfwsensorbase.h b/src/plugins/sensors/sensorfw/sensorfwsensorbase.h
index 2fc8238d..769a8cbb 100644
--- a/src/plugins/sensors/sensorfw/sensorfwsensorbase.h
+++ b/src/plugins/sensors/sensorfw/sensorfwsensorbase.h
@@ -62,8 +62,8 @@ public:
 
 protected:
     virtual bool doConnect()=0;
-    virtual void start();
-    virtual void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
 
     static const float GRAVITY_EARTH;
     static const float GRAVITY_EARTH_THOUSANDTH;    //for speed
diff --git a/src/plugins/sensors/sensorfw/sensorfwtapsensor.h b/src/plugins/sensors/sensorfw/sensorfwtapsensor.h
index c8298761..4373385a 100644
--- a/src/plugins/sensors/sensorfw/sensorfwtapsensor.h
+++ b/src/plugins/sensors/sensorfw/sensorfwtapsensor.h
@@ -57,10 +57,10 @@ public:
     static char const * const id;
     SensorfwTapSensor(QSensor *sensor);
 protected:
-    virtual bool doConnect();
-    virtual void start();
-    virtual QString sensorName() const;
-    virtual void init() Q_DECL_OVERRIDE;
+    bool doConnect() Q_DECL_OVERRIDE;
+    void start() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    virtual void init();
 private:
     QTapReading m_reading;
     bool m_initDone;
diff --git a/src/plugins/sensors/simulator/simulatoraccelerometer.h b/src/plugins/sensors/simulator/simulatoraccelerometer.h
index 2658e9b6..00aacb89 100644
--- a/src/plugins/sensors/simulator/simulatoraccelerometer.h
+++ b/src/plugins/sensors/simulator/simulatoraccelerometer.h
@@ -52,7 +52,7 @@ public:
 
     SimulatorAccelerometer(QSensor *sensor);
 
-    void poll();
+    void poll() Q_DECL_OVERRIDE;
 private:
     QAccelerometerReading m_reading;
 };
diff --git a/src/plugins/sensors/simulator/simulatorambientlightsensor.h b/src/plugins/sensors/simulator/simulatorambientlightsensor.h
index 3f4dca49..6154fdce 100644
--- a/src/plugins/sensors/simulator/simulatorambientlightsensor.h
+++ b/src/plugins/sensors/simulator/simulatorambientlightsensor.h
@@ -52,7 +52,7 @@ public:
 
     SimulatorAmbientLightSensor(QSensor *sensor);
 
-    void poll();
+    void poll() Q_DECL_OVERRIDE;
 private:
     QAmbientLightReading m_reading;
 };
diff --git a/src/plugins/sensors/simulator/simulatorcommon.h b/src/plugins/sensors/simulator/simulatorcommon.h
index 96ef69a6..a1c13991 100644
--- a/src/plugins/sensors/simulator/simulatorcommon.h
+++ b/src/plugins/sensors/simulator/simulatorcommon.h
@@ -94,10 +94,10 @@ class SimulatorCommon : public QSensorBackend
 public:
     SimulatorCommon(QSensor *sensor);
 
-    void start();
-    void stop();
+    void start() Q_DECL_OVERRIDE;
+    void stop() Q_DECL_OVERRIDE;
     virtual void poll() = 0;
-    void timerEvent(QTimerEvent * /*event*/);
+    void timerEvent(QTimerEvent * /*event*/) Q_DECL_OVERRIDE;
 
 private:
     int m_timerid;
diff --git a/src/plugins/sensors/simulator/simulatorcompass.h b/src/plugins/sensors/simulator/simulatorcompass.h
index 9dfea0ce..d10ce98b 100644
--- a/src/plugins/sensors/simulator/simulatorcompass.h
+++ b/src/plugins/sensors/simulator/simulatorcompass.h
@@ -52,7 +52,7 @@ public:
 
     SimulatorCompass(QSensor *sensor);
 
-    void poll();
+    void poll() Q_DECL_OVERRIDE;
 private:
     QCompassReading m_reading;
 };
diff --git a/src/plugins/sensors/simulator/simulatorirproximitysensor.h b/src/plugins/sensors/simulator/simulatorirproximitysensor.h
index 25af1462..c8107473 100644
--- a/src/plugins/sensors/simulator/simulatorirproximitysensor.h
+++ b/src/plugins/sensors/simulator/simulatorirproximitysensor.h
@@ -52,7 +52,7 @@ public:
 
     SimulatorIRProximitySensor(QSensor *sensor);
 
-    void poll();
+    void poll() Q_DECL_OVERRIDE;
 private:
     QIRProximityReading m_reading;
 };
diff --git a/src/plugins/sensors/simulator/simulatorlightsensor.h b/src/plugins/sensors/simulator/simulatorlightsensor.h
index e9cd3594..68a50952 100644
--- a/src/plugins/sensors/simulator/simulatorlightsensor.h
+++ b/src/plugins/sensors/simulator/simulatorlightsensor.h
@@ -52,7 +52,7 @@ public:
 
     SimulatorLightSensor(QSensor *sensor);
 
-    void poll();
+    void poll() Q_DECL_OVERRIDE;
 private:
     QLightReading m_reading;
 };
diff --git a/src/plugins/sensors/simulator/simulatormagnetometer.h b/src/plugins/sensors/simulator/simulatormagnetometer.h
index d1188edc..9d8c3fb6 100644
--- a/src/plugins/sensors/simulator/simulatormagnetometer.h
+++ b/src/plugins/sensors/simulator/simulatormagnetometer.h
@@ -52,7 +52,7 @@ public:
 
     SimulatorMagnetometer(QSensor *sensor);
 
-    void poll();
+    void poll() Q_DECL_OVERRIDE;
 private:
     QMagnetometerReading m_reading;
 };
diff --git a/src/plugins/sensors/simulator/simulatorproximitysensor.h b/src/plugins/sensors/simulator/simulatorproximitysensor.h
index a06e64d2..d7a9e744 100644
--- a/src/plugins/sensors/simulator/simulatorproximitysensor.h
+++ b/src/plugins/sensors/simulator/simulatorproximitysensor.h
@@ -52,7 +52,7 @@ public:
 
     SimulatorProximitySensor(QSensor *sensor);
 
-    void poll();
+    void poll() Q_DECL_OVERRIDE;
 private:
     QProximityReading m_reading;
 };
diff --git a/src/sensors/qcompass.h b/src/sensors/qcompass.h
index 75b68692..53510629 100644
--- a/src/sensors/qcompass.h
+++ b/src/sensors/qcompass.h
@@ -67,7 +67,7 @@ class Q_SENSORS_EXPORT QCompassFilter : public QSensorFilter
 public:
     virtual bool filter(QCompassReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class Q_SENSORS_EXPORT QCompass : public QSensor
diff --git a/src/sensors/qgyroscope.h b/src/sensors/qgyroscope.h
index 31ed23bc..95d751bf 100644
--- a/src/sensors/qgyroscope.h
+++ b/src/sensors/qgyroscope.h
@@ -71,7 +71,7 @@ class Q_SENSORS_EXPORT QGyroscopeFilter : public QSensorFilter
 public:
     virtual bool filter(QGyroscopeReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class Q_SENSORS_EXPORT QGyroscope : public QSensor
diff --git a/src/sensors/qirproximitysensor.h b/src/sensors/qirproximitysensor.h
index c4ecba4e..04ad1919 100644
--- a/src/sensors/qirproximitysensor.h
+++ b/src/sensors/qirproximitysensor.h
@@ -63,7 +63,7 @@ class Q_SENSORS_EXPORT QIRProximityFilter : public QSensorFilter
 public:
     virtual bool filter(QIRProximityReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class Q_SENSORS_EXPORT QIRProximitySensor : public QSensor
diff --git a/src/sensors/qlightsensor.h b/src/sensors/qlightsensor.h
index 26240b46..f54b986e 100644
--- a/src/sensors/qlightsensor.h
+++ b/src/sensors/qlightsensor.h
@@ -63,7 +63,7 @@ class Q_SENSORS_EXPORT QLightFilter : public QSensorFilter
 public:
     virtual bool filter(QLightReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class QLightSensorPrivate;
diff --git a/src/sensors/qmagnetometer.h b/src/sensors/qmagnetometer.h
index 9d754fc7..6af8bfa5 100644
--- a/src/sensors/qmagnetometer.h
+++ b/src/sensors/qmagnetometer.h
@@ -75,7 +75,7 @@ class Q_SENSORS_EXPORT QMagnetometerFilter : public QSensorFilter
 public:
     virtual bool filter(QMagnetometerReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class QMagnetometerPrivate;
diff --git a/src/sensors/qorientationsensor.h b/src/sensors/qorientationsensor.h
index a6fccb87..dccf6ca3 100644
--- a/src/sensors/qorientationsensor.h
+++ b/src/sensors/qorientationsensor.h
@@ -74,7 +74,7 @@ class Q_SENSORS_EXPORT QOrientationFilter : public QSensorFilter
 public:
     virtual bool filter(QOrientationReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class Q_SENSORS_EXPORT QOrientationSensor : public QSensor
diff --git a/src/sensors/qproximitysensor.h b/src/sensors/qproximitysensor.h
index 162334f7..1b974a72 100644
--- a/src/sensors/qproximitysensor.h
+++ b/src/sensors/qproximitysensor.h
@@ -63,7 +63,7 @@ class Q_SENSORS_EXPORT QProximityFilter : public QSensorFilter
 public:
     virtual bool filter(QProximityReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class Q_SENSORS_EXPORT QProximitySensor : public QSensor
diff --git a/src/sensors/qrotationsensor.h b/src/sensors/qrotationsensor.h
index e7d0e2e9..e1fd94ec 100644
--- a/src/sensors/qrotationsensor.h
+++ b/src/sensors/qrotationsensor.h
@@ -68,7 +68,7 @@ class Q_SENSORS_EXPORT QRotationFilter : public QSensorFilter
 public:
     virtual bool filter(QRotationReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class QRotationSensorPrivate;
diff --git a/src/sensors/qtapsensor.h b/src/sensors/qtapsensor.h
index 688781eb..5170eeb1 100644
--- a/src/sensors/qtapsensor.h
+++ b/src/sensors/qtapsensor.h
@@ -84,7 +84,7 @@ class Q_SENSORS_EXPORT QTapFilter : public QSensorFilter
 public:
     virtual bool filter(QTapReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class QTapSensorPrivate;
diff --git a/src/sensors/qtiltsensor.h b/src/sensors/qtiltsensor.h
index 4d7e4c76..64b7fff7 100644
--- a/src/sensors/qtiltsensor.h
+++ b/src/sensors/qtiltsensor.h
@@ -69,7 +69,7 @@ class Q_SENSORS_EXPORT QTiltFilter : public QSensorFilter
 public:
     virtual bool filter(QTiltReading *reading) = 0;
 private:
-    bool filter(QSensorReading *reading);
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
 };
 
 class Q_SENSORS_EXPORT QTiltSensor : public QSensor