Make public headers compile with -Wzero-as-null-pointer-constant

... or equivalent.

QtBase 5.6 headers already compile that way, so let the other
modules follow suit.

Task-number: QTBUG-45291
Change-Id: Iaa6ea07220566adc323010c52233416e6ae2b726
Reviewed-by: Lorn Potter <lorn.potter@canonical.com>

22 files changed, 25 insertions, 25 deletions

diff --git a/src/sensors/gestures/qsensorgesture.h b/src/sensors/gestures/qsensorgesture.h
index 46d7e77c..dda7d255 100644
--- a/src/sensors/gestures/qsensorgesture.h
+++ b/src/sensors/gestures/qsensorgesture.h
@@ -52,7 +52,7 @@ class Q_SENSORS_EXPORT QSensorGesture : public QObject
 {
     //Do not use Q_OBJECT here
 public:
-    QSensorGesture(const QStringList &ids, QObject *parent = 0);
+    QSensorGesture(const QStringList &ids, QObject *parent = Q_NULLPTR);
     ~QSensorGesture();
 
     bool isActive();
diff --git a/src/sensors/gestures/qsensorgesturemanager.h b/src/sensors/gestures/qsensorgesturemanager.h
index cda4e18b..ee7e77aa 100644
--- a/src/sensors/gestures/qsensorgesturemanager.h
+++ b/src/sensors/gestures/qsensorgesturemanager.h
@@ -49,7 +49,7 @@ class Q_SENSORS_EXPORT QSensorGestureManager : public QObject
     Q_DECLARE_PRIVATE(QSensorGestureManager)
 
 public:
-    explicit QSensorGestureManager(QObject *parent = 0);
+    explicit QSensorGestureManager(QObject *parent = Q_NULLPTR);
 
     ~QSensorGestureManager();
 
diff --git a/src/sensors/gestures/qsensorgesturerecognizer.h b/src/sensors/gestures/qsensorgesturerecognizer.h
index de6ad022..675ff612 100644
--- a/src/sensors/gestures/qsensorgesturerecognizer.h
+++ b/src/sensors/gestures/qsensorgesturerecognizer.h
@@ -47,7 +47,7 @@ class Q_SENSORS_EXPORT QSensorGestureRecognizer : public QObject
 {
     Q_OBJECT
 public:
-    QSensorGestureRecognizer(QObject *parent = 0);
+    QSensorGestureRecognizer(QObject *parent = Q_NULLPTR);
     virtual ~QSensorGestureRecognizer();
 
     virtual QString id() const = 0;
diff --git a/src/sensors/qaccelerometer.h b/src/sensors/qaccelerometer.h
index 9f8cd8c9..2db65c90 100644
--- a/src/sensors/qaccelerometer.h
+++ b/src/sensors/qaccelerometer.h
@@ -75,7 +75,7 @@ class Q_SENSORS_EXPORT QAccelerometer : public QSensor
     Q_PROPERTY(AccelerationMode accelerationMode READ accelerationMode WRITE setAccelerationMode
                NOTIFY accelerationModeChanged)
 public:
-    explicit QAccelerometer(QObject *parent = 0);
+    explicit QAccelerometer(QObject *parent = Q_NULLPTR);
     virtual ~QAccelerometer();
 
     // Keep this enum in sync with QmlAccelerometer::AccelerationMode
diff --git a/src/sensors/qaltimeter.h b/src/sensors/qaltimeter.h
index 46be7695..85b353e8 100644
--- a/src/sensors/qaltimeter.h
+++ b/src/sensors/qaltimeter.h
@@ -61,7 +61,7 @@ class Q_SENSORS_EXPORT QAltimeter : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QAltimeter(QObject *parent = 0);
+    explicit QAltimeter(QObject *parent = Q_NULLPTR);
     ~QAltimeter();
     QAltimeterReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qambientlightsensor.h b/src/sensors/qambientlightsensor.h
index 37f37234..53182f94 100644
--- a/src/sensors/qambientlightsensor.h
+++ b/src/sensors/qambientlightsensor.h
@@ -72,7 +72,7 @@ class Q_SENSORS_EXPORT QAmbientLightSensor : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QAmbientLightSensor(QObject *parent = 0);
+    explicit QAmbientLightSensor(QObject *parent = Q_NULLPTR);
     virtual ~QAmbientLightSensor();
     QAmbientLightReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qambienttemperaturesensor.h b/src/sensors/qambienttemperaturesensor.h
index 5dabac5d..93f3efd3 100644
--- a/src/sensors/qambienttemperaturesensor.h
+++ b/src/sensors/qambienttemperaturesensor.h
@@ -61,7 +61,7 @@ class Q_SENSORS_EXPORT QAmbientTemperatureSensor : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QAmbientTemperatureSensor(QObject *parent = 0);
+    explicit QAmbientTemperatureSensor(QObject *parent = Q_NULLPTR);
     ~QAmbientTemperatureSensor();
     QAmbientTemperatureReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qcompass.h b/src/sensors/qcompass.h
index acb76536..1069b6ce 100644
--- a/src/sensors/qcompass.h
+++ b/src/sensors/qcompass.h
@@ -66,7 +66,7 @@ class Q_SENSORS_EXPORT QCompass : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QCompass(QObject *parent = 0);
+    explicit QCompass(QObject *parent = Q_NULLPTR);
     virtual ~QCompass();
     QCompassReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qdistancesensor.h b/src/sensors/qdistancesensor.h
index bcc1e73a..e1819233 100644
--- a/src/sensors/qdistancesensor.h
+++ b/src/sensors/qdistancesensor.h
@@ -62,7 +62,7 @@ class Q_SENSORS_EXPORT QDistanceSensor : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QDistanceSensor(QObject *parent = 0);
+    explicit QDistanceSensor(QObject *parent = Q_NULLPTR);
     ~QDistanceSensor();
     QDistanceReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qgyroscope.h b/src/sensors/qgyroscope.h
index 59ea405e..202503d5 100644
--- a/src/sensors/qgyroscope.h
+++ b/src/sensors/qgyroscope.h
@@ -70,7 +70,7 @@ class Q_SENSORS_EXPORT QGyroscope : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QGyroscope(QObject *parent = 0);
+    explicit QGyroscope(QObject *parent = Q_NULLPTR);
     virtual ~QGyroscope();
     QGyroscopeReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qholstersensor.h b/src/sensors/qholstersensor.h
index b201a61c..6f9d1d89 100644
--- a/src/sensors/qholstersensor.h
+++ b/src/sensors/qholstersensor.h
@@ -61,7 +61,7 @@ class Q_SENSORS_EXPORT QHolsterSensor : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QHolsterSensor(QObject *parent = 0);
+    explicit QHolsterSensor(QObject *parent = Q_NULLPTR);
     ~QHolsterSensor();
     QHolsterReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qirproximitysensor.h b/src/sensors/qirproximitysensor.h
index 32f0c880..f81f1163 100644
--- a/src/sensors/qirproximitysensor.h
+++ b/src/sensors/qirproximitysensor.h
@@ -62,7 +62,7 @@ class Q_SENSORS_EXPORT QIRProximitySensor : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QIRProximitySensor(QObject *parent = 0);
+    explicit QIRProximitySensor(QObject *parent = Q_NULLPTR);
     virtual ~QIRProximitySensor();
     QIRProximityReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qlightsensor.h b/src/sensors/qlightsensor.h
index fdebeb1d..b56b2840 100644
--- a/src/sensors/qlightsensor.h
+++ b/src/sensors/qlightsensor.h
@@ -65,7 +65,7 @@ class Q_SENSORS_EXPORT QLightSensor : public QSensor
     Q_OBJECT
     Q_PROPERTY(qreal fieldOfView READ fieldOfView NOTIFY fieldOfViewChanged)
 public:
-    explicit QLightSensor(QObject *parent = 0);
+    explicit QLightSensor(QObject *parent = Q_NULLPTR);
     virtual ~QLightSensor();
     QLightReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qmagnetometer.h b/src/sensors/qmagnetometer.h
index 8a0c6d2a..8020c02d 100644
--- a/src/sensors/qmagnetometer.h
+++ b/src/sensors/qmagnetometer.h
@@ -77,7 +77,7 @@ class Q_SENSORS_EXPORT QMagnetometer : public QSensor
     Q_OBJECT
     Q_PROPERTY(bool returnGeoValues READ returnGeoValues WRITE setReturnGeoValues NOTIFY returnGeoValuesChanged)
 public:
-    explicit QMagnetometer(QObject *parent = 0);
+    explicit QMagnetometer(QObject *parent = Q_NULLPTR);
     virtual ~QMagnetometer();
     QMagnetometerReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qorientationsensor.h b/src/sensors/qorientationsensor.h
index c92f64f9..badb67e9 100644
--- a/src/sensors/qorientationsensor.h
+++ b/src/sensors/qorientationsensor.h
@@ -73,7 +73,7 @@ class Q_SENSORS_EXPORT QOrientationSensor : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QOrientationSensor(QObject *parent = 0);
+    explicit QOrientationSensor(QObject *parent = Q_NULLPTR);
     virtual ~QOrientationSensor();
     QOrientationReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qpressuresensor.h b/src/sensors/qpressuresensor.h
index a9bfaaaf..1a907c06 100644
--- a/src/sensors/qpressuresensor.h
+++ b/src/sensors/qpressuresensor.h
@@ -65,7 +65,7 @@ class Q_SENSORS_EXPORT QPressureSensor : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QPressureSensor(QObject *parent = 0);
+    explicit QPressureSensor(QObject *parent = Q_NULLPTR);
     ~QPressureSensor();
     QPressureReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qproximitysensor.h b/src/sensors/qproximitysensor.h
index d44a0505..a55c3d7f 100644
--- a/src/sensors/qproximitysensor.h
+++ b/src/sensors/qproximitysensor.h
@@ -62,7 +62,7 @@ class Q_SENSORS_EXPORT QProximitySensor : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QProximitySensor(QObject *parent = 0);
+    explicit QProximitySensor(QObject *parent = Q_NULLPTR);
     virtual ~QProximitySensor();
     QProximityReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qrotationsensor.h b/src/sensors/qrotationsensor.h
index 3b21493b..1da85edd 100644
--- a/src/sensors/qrotationsensor.h
+++ b/src/sensors/qrotationsensor.h
@@ -70,7 +70,7 @@ class Q_SENSORS_EXPORT QRotationSensor : public QSensor
     Q_OBJECT
     Q_PROPERTY(bool hasZ READ hasZ NOTIFY hasZChanged)
 public:
-    explicit QRotationSensor(QObject *parent = 0);
+    explicit QRotationSensor(QObject *parent = Q_NULLPTR);
     virtual ~QRotationSensor();
     QRotationReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qsensor.h b/src/sensors/qsensor.h
index a5f78f9c..cb86e53b 100644
--- a/src/sensors/qsensor.h
+++ b/src/sensors/qsensor.h
@@ -110,7 +110,7 @@ public:
         UserOrientation
     };
 
-    explicit QSensor(const QByteArray &type, QObject *parent = 0);
+    explicit QSensor(const QByteArray &type, QObject *parent = Q_NULLPTR);
     virtual ~QSensor();
 
     QByteArray identifier() const;
@@ -201,7 +201,7 @@ Q_SIGNALS:
     void bufferSizeChanged(int bufferSize);
 
 protected:
-    explicit QSensor(const QByteArray &type, QSensorPrivate &dd, QObject* parent = 0);
+    explicit QSensor(const QByteArray &type, QSensorPrivate &dd, QObject* parent = Q_NULLPTR);
     QSensorBackend *backend() const;
 
 private:
@@ -255,7 +255,7 @@ private:
 
 #define DECLARE_READING_D(classname, pclassname)\
     public:\
-        classname(QObject *parent = 0);\
+        classname(QObject *parent = Q_NULLPTR);\
         virtual ~classname();\
         void copyValuesFrom(QSensorReading *other);\
     private:\
@@ -266,7 +266,7 @@ private:
 
 #define IMPLEMENT_READING_D(classname, pclassname)\
     classname::classname(QObject *parent)\
-        : QSensorReading(parent, 0)\
+        : QSensorReading(parent, Q_NULLPTR)\
         , d(new pclassname)\
         {}\
     classname::~classname() {}\
diff --git a/src/sensors/qsensorbackend.h b/src/sensors/qsensorbackend.h
index 460d318f..753cab9e 100644
--- a/src/sensors/qsensorbackend.h
+++ b/src/sensors/qsensorbackend.h
@@ -45,7 +45,7 @@ class Q_SENSORS_EXPORT QSensorBackend : public QObject
 {
     Q_OBJECT
 public:
-    explicit QSensorBackend(QSensor *sensor, QObject *parent = 0);
+    explicit QSensorBackend(QSensor *sensor, QObject *parent = Q_NULLPTR);
     virtual ~QSensorBackend();
 
     virtual void start() = 0;
diff --git a/src/sensors/qtapsensor.h b/src/sensors/qtapsensor.h
index ada6a658..0d6b70eb 100644
--- a/src/sensors/qtapsensor.h
+++ b/src/sensors/qtapsensor.h
@@ -87,7 +87,7 @@ class Q_SENSORS_EXPORT QTapSensor : public QSensor
     Q_PROPERTY(bool returnDoubleTapEvents READ returnDoubleTapEvents WRITE setReturnDoubleTapEvents
                NOTIFY returnDoubleTapEventsChanged)
 public:
-    explicit QTapSensor(QObject *parent = 0);
+    explicit QTapSensor(QObject *parent = Q_NULLPTR);
     virtual ~QTapSensor();
     QTapReading *reading() const;
     static char const * const type;
diff --git a/src/sensors/qtiltsensor.h b/src/sensors/qtiltsensor.h
index 6aac3217..cbc1ba37 100644
--- a/src/sensors/qtiltsensor.h
+++ b/src/sensors/qtiltsensor.h
@@ -68,7 +68,7 @@ class Q_SENSORS_EXPORT QTiltSensor : public QSensor
 {
     Q_OBJECT
 public:
-    explicit QTiltSensor(QObject *parent = 0);
+    explicit QTiltSensor(QObject *parent = Q_NULLPTR);
     ~QTiltSensor();
     QTiltReading *reading() const;
     static char const * const type;