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.

Change-Id: I79c74046eaf224235cc80a4323fefd2c083b007f
Task-number: QTBUG-45291
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>

7 files changed, 13 insertions, 13 deletions

diff --git a/src/charts/legend/qarealegendmarker.h b/src/charts/legend/qarealegendmarker.h
index 70386899..1f0adc61 100644
--- a/src/charts/legend/qarealegendmarker.h
+++ b/src/charts/legend/qarealegendmarker.h
@@ -35,7 +35,7 @@ class QT_CHARTS_EXPORT QAreaLegendMarker : public QLegendMarker
     Q_OBJECT
 
 public:
-    explicit QAreaLegendMarker(QAreaSeries *series, QLegend *legend, QObject *parent = 0);
+    explicit QAreaLegendMarker(QAreaSeries *series, QLegend *legend, QObject *parent = Q_NULLPTR);
     virtual ~QAreaLegendMarker();
 
     virtual LegendMarkerType type() { return LegendMarkerTypeArea; }
@@ -44,7 +44,7 @@ public:
     virtual QAreaSeries* series();
 
 protected:
-    QAreaLegendMarker(QAreaLegendMarkerPrivate &d, QObject *parent = 0);
+    QAreaLegendMarker(QAreaLegendMarkerPrivate &d, QObject *parent = Q_NULLPTR);
 
 private:
     Q_DECLARE_PRIVATE(QAreaLegendMarker)
diff --git a/src/charts/legend/qbarlegendmarker.h b/src/charts/legend/qbarlegendmarker.h
index 02822df1..3d8e022a 100644
--- a/src/charts/legend/qbarlegendmarker.h
+++ b/src/charts/legend/qbarlegendmarker.h
@@ -35,7 +35,7 @@ class QT_CHARTS_EXPORT QBarLegendMarker : public QLegendMarker
 {
     Q_OBJECT
 public:
-    explicit QBarLegendMarker(QAbstractBarSeries *series, QBarSet *barset, QLegend *legend, QObject *parent = 0);
+    explicit QBarLegendMarker(QAbstractBarSeries *series, QBarSet *barset, QLegend *legend, QObject *parent = Q_NULLPTR);
     virtual ~QBarLegendMarker();
 
     virtual LegendMarkerType type() { return LegendMarkerTypeBar; }
@@ -45,7 +45,7 @@ public:
     QBarSet* barset();
 
 protected:
-    QBarLegendMarker(QBarLegendMarkerPrivate &d, QObject *parent = 0);
+    QBarLegendMarker(QBarLegendMarkerPrivate &d, QObject *parent = Q_NULLPTR);
 
 private:
     Q_DECLARE_PRIVATE(QBarLegendMarker)
diff --git a/src/charts/legend/qboxplotlegendmarker.h b/src/charts/legend/qboxplotlegendmarker.h
index d98a33e1..95264796 100644
--- a/src/charts/legend/qboxplotlegendmarker.h
+++ b/src/charts/legend/qboxplotlegendmarker.h
@@ -35,7 +35,7 @@ class QT_CHARTS_EXPORT QBoxPlotLegendMarker : public QLegendMarker
     Q_OBJECT
 
 public:
-    explicit QBoxPlotLegendMarker(QBoxPlotSeries *series, QLegend *legend, QObject *parent = 0);
+    explicit QBoxPlotLegendMarker(QBoxPlotSeries *series, QLegend *legend, QObject *parent = Q_NULLPTR);
     virtual ~QBoxPlotLegendMarker();
 
     virtual LegendMarkerType type() { return LegendMarkerTypeBoxPlot; }
@@ -44,7 +44,7 @@ public:
     virtual QBoxPlotSeries* series();
 
 protected:
-    QBoxPlotLegendMarker(QBoxPlotLegendMarkerPrivate &d, QObject *parent = 0);
+    QBoxPlotLegendMarker(QBoxPlotLegendMarkerPrivate &d, QObject *parent = Q_NULLPTR);
 
 private:
     Q_DECLARE_PRIVATE(QBoxPlotLegendMarker)
diff --git a/src/charts/legend/qlegend.h b/src/charts/legend/qlegend.h
index ad1d0a7d..7e352396 100644
--- a/src/charts/legend/qlegend.h
+++ b/src/charts/legend/qlegend.h
@@ -51,7 +51,7 @@ private:
 public:
     ~QLegend();
 
-    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = Q_NULLPTR);
 
     void setBrush(const QBrush &brush);
     QBrush brush() const;
@@ -81,7 +81,7 @@ public:
     void setBackgroundVisible(bool visible = true);
     bool isBackgroundVisible() const;
 
-    QList <QLegendMarker*> markers(QAbstractSeries *series = 0) const;
+    QList <QLegendMarker*> markers(QAbstractSeries *series = Q_NULLPTR) const;
 
     bool reverseMarkers();
     void setReverseMarkers(bool reverseMarkers = true);
diff --git a/src/charts/legend/qlegendmarker.h b/src/charts/legend/qlegendmarker.h
index 2f3b8cdc..39c6caf9 100644
--- a/src/charts/legend/qlegendmarker.h
+++ b/src/charts/legend/qlegendmarker.h
@@ -90,7 +90,7 @@ Q_SIGNALS:
     void visibleChanged();
 
 protected:
-    explicit QLegendMarker(QLegendMarkerPrivate &d, QObject *parent = 0);
+    explicit QLegendMarker(QLegendMarkerPrivate &d, QObject *parent = Q_NULLPTR);
 
     QScopedPointer<QLegendMarkerPrivate> d_ptr;
     friend class QLegendPrivate;
diff --git a/src/charts/legend/qpielegendmarker.h b/src/charts/legend/qpielegendmarker.h
index 20adaabc..81276848 100644
--- a/src/charts/legend/qpielegendmarker.h
+++ b/src/charts/legend/qpielegendmarker.h
@@ -36,7 +36,7 @@ class QT_CHARTS_EXPORT QPieLegendMarker : public QLegendMarker
     Q_OBJECT
 
 public:
-    explicit QPieLegendMarker(QPieSeries *series, QPieSlice *slice, QLegend *legend, QObject *parent = 0);
+    explicit QPieLegendMarker(QPieSeries *series, QPieSlice *slice, QLegend *legend, QObject *parent = Q_NULLPTR);
     virtual ~QPieLegendMarker();
 
     virtual LegendMarkerType type() { return LegendMarkerTypePie; }
@@ -46,7 +46,7 @@ public:
     QPieSlice* slice();
 
 protected:
-    QPieLegendMarker(QPieLegendMarkerPrivate &d, QObject *parent = 0);
+    QPieLegendMarker(QPieLegendMarkerPrivate &d, QObject *parent = Q_NULLPTR);
 
 private:
     Q_DECLARE_PRIVATE(QPieLegendMarker)
diff --git a/src/charts/legend/qxylegendmarker.h b/src/charts/legend/qxylegendmarker.h
index 601ffcaa..3c879cb6 100644
--- a/src/charts/legend/qxylegendmarker.h
+++ b/src/charts/legend/qxylegendmarker.h
@@ -34,7 +34,7 @@ class QT_CHARTS_EXPORT QXYLegendMarker : public QLegendMarker
 {
     Q_OBJECT
 public:
-    explicit QXYLegendMarker(QXYSeries *series, QLegend *legend, QObject *parent = 0);
+    explicit QXYLegendMarker(QXYSeries *series, QLegend *legend, QObject *parent = Q_NULLPTR);
     virtual ~QXYLegendMarker();
 
     virtual LegendMarkerType type() { return LegendMarkerTypeXY; }
@@ -43,7 +43,7 @@ public:
     virtual QXYSeries* series();
 
 protected:
-    QXYLegendMarker(QXYLegendMarkerPrivate &d, QObject *parent = 0);
+    QXYLegendMarker(QXYLegendMarkerPrivate &d, QObject *parent = Q_NULLPTR);
 
 private:
     Q_DECLARE_PRIVATE(QXYLegendMarker)