Replace Q_NULLPTR with nullptr where possible

Remaining uses of Q_NULLPTR are in:
src/corelib/global/qcompilerdetection.h
  (definition and documentation of Q_NULLPTR)
tests/manual/qcursor/qcursorhighdpi/main.cpp
  (a test executable compilable both under Qt4 and Qt5)

Change-Id: If6b074d91486e9b784138f4514f5c6d072acda9a
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

11 files changed, 69 insertions, 69 deletions

diff --git a/src/widgets/styles/qcommonstyle.h b/src/widgets/styles/qcommonstyle.h
index 96a26edf7d..f39915295e 100644
--- a/src/widgets/styles/qcommonstyle.h
+++ b/src/widgets/styles/qcommonstyle.h
@@ -56,34 +56,34 @@ public:
     ~QCommonStyle();
 
     void drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, QPainter *p,
-                       const QWidget *w = Q_NULLPTR) const override;
+                       const QWidget *w = nullptr) const override;
     void drawControl(ControlElement element, const QStyleOption *opt, QPainter *p,
-                     const QWidget *w = Q_NULLPTR) const override;
-    QRect subElementRect(SubElement r, const QStyleOption *opt, const QWidget *widget = Q_NULLPTR) const override;
+                     const QWidget *w = nullptr) const override;
+    QRect subElementRect(SubElement r, const QStyleOption *opt, const QWidget *widget = nullptr) const override;
     void drawComplexControl(ComplexControl cc, const QStyleOptionComplex *opt, QPainter *p,
-                            const QWidget *w = Q_NULLPTR) const override;
+                            const QWidget *w = nullptr) const override;
     SubControl hitTestComplexControl(ComplexControl cc, const QStyleOptionComplex *opt,
-                                     const QPoint &pt, const QWidget *w = Q_NULLPTR) const override;
+                                     const QPoint &pt, const QWidget *w = nullptr) const override;
     QRect subControlRect(ComplexControl cc, const QStyleOptionComplex *opt, SubControl sc,
-                         const QWidget *w = Q_NULLPTR) const override;
+                         const QWidget *w = nullptr) const override;
     QSize sizeFromContents(ContentsType ct, const QStyleOption *opt,
-                           const QSize &contentsSize, const QWidget *widget = Q_NULLPTR) const override;
+                           const QSize &contentsSize, const QWidget *widget = nullptr) const override;
 
-    int pixelMetric(PixelMetric m, const QStyleOption *opt = Q_NULLPTR, const QWidget *widget = Q_NULLPTR) const override;
+    int pixelMetric(PixelMetric m, const QStyleOption *opt = nullptr, const QWidget *widget = nullptr) const override;
 
-    int styleHint(StyleHint sh, const QStyleOption *opt = Q_NULLPTR, const QWidget *w = Q_NULLPTR,
-                  QStyleHintReturn *shret = Q_NULLPTR) const override;
+    int styleHint(StyleHint sh, const QStyleOption *opt = nullptr, const QWidget *w = nullptr,
+                  QStyleHintReturn *shret = nullptr) const override;
 
-    QIcon standardIcon(StandardPixmap standardIcon, const QStyleOption *opt = Q_NULLPTR,
-                       const QWidget *widget = Q_NULLPTR) const override;
-    QPixmap standardPixmap(StandardPixmap sp, const QStyleOption *opt = Q_NULLPTR,
-                           const QWidget *widget = Q_NULLPTR) const override;
+    QIcon standardIcon(StandardPixmap standardIcon, const QStyleOption *opt = nullptr,
+                       const QWidget *widget = nullptr) const override;
+    QPixmap standardPixmap(StandardPixmap sp, const QStyleOption *opt = nullptr,
+                           const QWidget *widget = nullptr) const override;
 
     QPixmap generatedIconPixmap(QIcon::Mode iconMode, const QPixmap &pixmap,
                                 const QStyleOption *opt) const override;
     int layoutSpacing(QSizePolicy::ControlType control1, QSizePolicy::ControlType control2,
-                      Qt::Orientation orientation, const QStyleOption *option = Q_NULLPTR,
-                      const QWidget *widget = Q_NULLPTR) const override;
+                      Qt::Orientation orientation, const QStyleOption *option = nullptr,
+                      const QWidget *widget = nullptr) const override;
 
     void polish(QPalette &) override;
     void polish(QApplication *app) override;
diff --git a/src/widgets/styles/qdrawutil.h b/src/widgets/styles/qdrawutil.h
index d5582f2c90..346029e1b4 100644
--- a/src/widgets/styles/qdrawutil.h
+++ b/src/widgets/styles/qdrawutil.h
@@ -70,42 +70,42 @@ Q_WIDGETS_EXPORT void qDrawShadeLine(QPainter *p, const QPoint &p1, const QPoint
 Q_WIDGETS_EXPORT void qDrawShadeRect(QPainter *p, int x, int y, int w, int h,
                               const QPalette &pal, bool sunken = false,
                               int lineWidth = 1, int midLineWidth = 0,
-                              const QBrush *fill = Q_NULLPTR);
+                              const QBrush *fill = nullptr);
 
 Q_WIDGETS_EXPORT void qDrawShadeRect(QPainter *p, const QRect &r,
                               const QPalette &pal, bool sunken = false,
                               int lineWidth = 1, int midLineWidth = 0,
-                              const QBrush *fill = Q_NULLPTR);
+                              const QBrush *fill = nullptr);
 
 Q_WIDGETS_EXPORT void qDrawShadePanel(QPainter *p, int x, int y, int w, int h,
                                const QPalette &pal, bool sunken = false,
-                               int lineWidth = 1, const QBrush *fill = Q_NULLPTR);
+                               int lineWidth = 1, const QBrush *fill = nullptr);
 
 Q_WIDGETS_EXPORT void qDrawShadePanel(QPainter *p, const QRect &r,
                                const QPalette &pal, bool sunken = false,
-                               int lineWidth = 1, const QBrush *fill = Q_NULLPTR);
+                               int lineWidth = 1, const QBrush *fill = nullptr);
 
 Q_WIDGETS_EXPORT void qDrawWinButton(QPainter *p, int x, int y, int w, int h,
                               const QPalette &pal, bool sunken = false,
-                              const QBrush *fill = Q_NULLPTR);
+                              const QBrush *fill = nullptr);
 
 Q_WIDGETS_EXPORT void qDrawWinButton(QPainter *p, const QRect &r,
                               const QPalette &pal, bool sunken = false,
-                              const QBrush *fill = Q_NULLPTR);
+                              const QBrush *fill = nullptr);
 
 Q_WIDGETS_EXPORT void qDrawWinPanel(QPainter *p, int x, int y, int w, int h,
                               const QPalette &pal, bool sunken = false,
-                             const QBrush *fill = Q_NULLPTR);
+                             const QBrush *fill = nullptr);
 
 Q_WIDGETS_EXPORT void qDrawWinPanel(QPainter *p, const QRect &r,
                               const QPalette &pal, bool sunken = false,
-                             const QBrush *fill = Q_NULLPTR);
+                             const QBrush *fill = nullptr);
 
 Q_WIDGETS_EXPORT void qDrawPlainRect(QPainter *p, int x, int y, int w, int h, const QColor &,
-                              int lineWidth = 1, const QBrush *fill = Q_NULLPTR);
+                              int lineWidth = 1, const QBrush *fill = nullptr);
 
 Q_WIDGETS_EXPORT void qDrawPlainRect(QPainter *p, const QRect &r, const QColor &,
-                              int lineWidth = 1, const QBrush *fill = Q_NULLPTR);
+                              int lineWidth = 1, const QBrush *fill = nullptr);
 
 
 
diff --git a/src/widgets/styles/qpixmapstyle_p.h b/src/widgets/styles/qpixmapstyle_p.h
index 6ec42eec34..590434d95e 100644
--- a/src/widgets/styles/qpixmapstyle_p.h
+++ b/src/widgets/styles/qpixmapstyle_p.h
@@ -143,21 +143,21 @@ public:
     void unpolish(QWidget *widget) override;
 
     void drawPrimitive(PrimitiveElement element, const QStyleOption *option,
-            QPainter *painter, const QWidget *widget = Q_NULLPTR) const override;
+            QPainter *painter, const QWidget *widget = nullptr) const override;
     void drawControl(ControlElement element, const QStyleOption *option,
-            QPainter *painter, const QWidget *widget = Q_NULLPTR) const override;
+            QPainter *painter, const QWidget *widget = nullptr) const override;
     void drawComplexControl(ComplexControl cc, const QStyleOptionComplex *option,
                             QPainter *painter, const QWidget *widget=0) const override;
 
     QSize sizeFromContents(ContentsType type, const QStyleOption *option,
-            const QSize &contentsSize, const QWidget *widget = Q_NULLPTR) const override;
+            const QSize &contentsSize, const QWidget *widget = nullptr) const override;
     QRect subElementRect(SubElement element, const QStyleOption *option,
-            const QWidget *widget = Q_NULLPTR) const override;
+            const QWidget *widget = nullptr) const override;
     QRect subControlRect(ComplexControl cc, const QStyleOptionComplex *option,
-                         SubControl sc, const QWidget *widget = Q_NULLPTR) const override;
+                         SubControl sc, const QWidget *widget = nullptr) const override;
 
-    int pixelMetric(PixelMetric metric, const QStyleOption *option = Q_NULLPTR,
-            const QWidget *widget = Q_NULLPTR) const override;
+    int pixelMetric(PixelMetric metric, const QStyleOption *option = nullptr,
+            const QWidget *widget = nullptr) const override;
     int styleHint(StyleHint hint, const QStyleOption *option,
                   const QWidget *widget, QStyleHintReturn *returnData) const override;
     SubControl hitTestComplexControl(ComplexControl control, const QStyleOptionComplex *option,
diff --git a/src/widgets/styles/qproxystyle.h b/src/widgets/styles/qproxystyle.h
index 99cde75bb9..c26d9abf59 100644
--- a/src/widgets/styles/qproxystyle.h
+++ b/src/widgets/styles/qproxystyle.h
@@ -54,16 +54,16 @@ class Q_WIDGETS_EXPORT QProxyStyle : public QCommonStyle
     Q_OBJECT
 
 public:
-    QProxyStyle(QStyle *style = Q_NULLPTR);
+    QProxyStyle(QStyle *style = nullptr);
     QProxyStyle(const QString &key);
     ~QProxyStyle();
 
     QStyle *baseStyle() const;
     void setBaseStyle(QStyle *style);
 
-    void drawPrimitive(PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget = Q_NULLPTR) const override;
-    void drawControl(ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget = Q_NULLPTR) const override;
-    void drawComplexControl(ComplexControl control, const QStyleOptionComplex *option, QPainter *painter, const QWidget *widget = Q_NULLPTR) const override;
+    void drawPrimitive(PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget = nullptr) const override;
+    void drawControl(ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget = nullptr) const override;
+    void drawComplexControl(ComplexControl control, const QStyleOptionComplex *option, QPainter *painter, const QWidget *widget = nullptr) const override;
     void drawItemText(QPainter *painter, const QRect &rect, int flags, const QPalette &pal, bool enabled,
                       const QString &text, QPalette::ColorRole textRole = QPalette::NoRole) const override;
     virtual void drawItemPixmap(QPainter *painter, const QRect &rect, int alignment, const QPixmap &pixmap) const override;
@@ -75,14 +75,14 @@ public:
     QRect itemTextRect(const QFontMetrics &fm, const QRect &r, int flags, bool enabled, const QString &text) const override;
     QRect itemPixmapRect(const QRect &r, int flags, const QPixmap &pixmap) const override;
 
-    SubControl hitTestComplexControl(ComplexControl control, const QStyleOptionComplex *option, const QPoint &pos, const QWidget *widget = Q_NULLPTR) const override;
-    int styleHint(StyleHint hint, const QStyleOption *option = Q_NULLPTR, const QWidget *widget = Q_NULLPTR, QStyleHintReturn *returnData = Q_NULLPTR) const override;
-    int pixelMetric(PixelMetric metric, const QStyleOption *option = Q_NULLPTR, const QWidget *widget = Q_NULLPTR) const override;
+    SubControl hitTestComplexControl(ComplexControl control, const QStyleOptionComplex *option, const QPoint &pos, const QWidget *widget = nullptr) const override;
+    int styleHint(StyleHint hint, const QStyleOption *option = nullptr, const QWidget *widget = nullptr, QStyleHintReturn *returnData = nullptr) const override;
+    int pixelMetric(PixelMetric metric, const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const override;
     int layoutSpacing(QSizePolicy::ControlType control1, QSizePolicy::ControlType control2,
-                      Qt::Orientation orientation, const QStyleOption *option = Q_NULLPTR, const QWidget *widget = Q_NULLPTR) const override;
+                      Qt::Orientation orientation, const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const override;
 
-    QIcon standardIcon(StandardPixmap standardIcon, const QStyleOption *option = Q_NULLPTR, const QWidget *widget = Q_NULLPTR) const override;
-    QPixmap standardPixmap(StandardPixmap standardPixmap, const QStyleOption *opt, const QWidget *widget = Q_NULLPTR) const override;
+    QIcon standardIcon(StandardPixmap standardIcon, const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const override;
+    QPixmap standardPixmap(StandardPixmap standardPixmap, const QStyleOption *opt, const QWidget *widget = nullptr) const override;
     QPixmap generatedIconPixmap(QIcon::Mode iconMode, const QPixmap &pixmap, const QStyleOption *opt) const override;
     QPalette standardPalette() const override;
 
diff --git a/src/widgets/styles/qstyle.h b/src/widgets/styles/qstyle.h
index b4936a3e0a..f922aff7f1 100644
--- a/src/widgets/styles/qstyle.h
+++ b/src/widgets/styles/qstyle.h
@@ -202,7 +202,7 @@ public:
     Q_ENUM(PrimitiveElement)
 
     virtual void drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, QPainter *p,
-                               const QWidget *w = Q_NULLPTR) const = 0;
+                               const QWidget *w = nullptr) const = 0;
     enum ControlElement {
         CE_PushButton,
         CE_PushButtonBevel,
@@ -273,7 +273,7 @@ public:
     Q_ENUM(ControlElement)
 
     virtual void drawControl(ControlElement element, const QStyleOption *opt, QPainter *p,
-                             const QWidget *w = Q_NULLPTR) const = 0;
+                             const QWidget *w = nullptr) const = 0;
 
     enum SubElement {
         SE_PushButtonContents,
@@ -362,7 +362,7 @@ public:
     Q_ENUM(SubElement)
 
     virtual QRect subElementRect(SubElement subElement, const QStyleOption *option,
-                                 const QWidget *widget = Q_NULLPTR) const = 0;
+                                 const QWidget *widget = nullptr) const = 0;
 
 
     enum ComplexControl {
@@ -441,11 +441,11 @@ public:
 
 
     virtual void drawComplexControl(ComplexControl cc, const QStyleOptionComplex *opt, QPainter *p,
-                                    const QWidget *widget = Q_NULLPTR) const = 0;
+                                    const QWidget *widget = nullptr) const = 0;
     virtual SubControl hitTestComplexControl(ComplexControl cc, const QStyleOptionComplex *opt,
-                                             const QPoint &pt, const QWidget *widget = Q_NULLPTR) const = 0;
+                                             const QPoint &pt, const QWidget *widget = nullptr) const = 0;
     virtual QRect subControlRect(ComplexControl cc, const QStyleOptionComplex *opt,
-                                 SubControl sc, const QWidget *widget = Q_NULLPTR) const = 0;
+                                 SubControl sc, const QWidget *widget = nullptr) const = 0;
 
     enum PixelMetric {
         PM_ButtonMargin,
@@ -579,8 +579,8 @@ public:
     };
     Q_ENUM(PixelMetric)
 
-    virtual int pixelMetric(PixelMetric metric, const QStyleOption *option = Q_NULLPTR,
-                            const QWidget *widget = Q_NULLPTR) const = 0;
+    virtual int pixelMetric(PixelMetric metric, const QStyleOption *option = nullptr,
+                            const QWidget *widget = nullptr) const = 0;
 
     enum ContentsType {
         CT_PushButton,
@@ -612,7 +612,7 @@ public:
     Q_ENUM(ContentsType)
 
     virtual QSize sizeFromContents(ContentsType ct, const QStyleOption *opt,
-                                   const QSize &contentsSize, const QWidget *w = Q_NULLPTR) const = 0;
+                                   const QSize &contentsSize, const QWidget *w = nullptr) const = 0;
 
     enum RequestSoftwareInputPanel {
         RSIP_OnMouseClickAndAlreadyFocused,
@@ -745,8 +745,8 @@ public:
     };
     Q_ENUM(StyleHint)
 
-    virtual int styleHint(StyleHint stylehint, const QStyleOption *opt = Q_NULLPTR,
-                          const QWidget *widget = Q_NULLPTR, QStyleHintReturn* returnData = Q_NULLPTR) const = 0;
+    virtual int styleHint(StyleHint stylehint, const QStyleOption *opt = nullptr,
+                          const QWidget *widget = nullptr, QStyleHintReturn* returnData = nullptr) const = 0;
 
     enum StandardPixmap {
         SP_TitleBarMenuButton,
@@ -825,11 +825,11 @@ public:
     };
     Q_ENUM(StandardPixmap)
 
-    virtual QPixmap standardPixmap(StandardPixmap standardPixmap, const QStyleOption *opt = Q_NULLPTR,
-                                   const QWidget *widget = Q_NULLPTR) const = 0;
+    virtual QPixmap standardPixmap(StandardPixmap standardPixmap, const QStyleOption *opt = nullptr,
+                                   const QWidget *widget = nullptr) const = 0;
 
-    virtual QIcon standardIcon(StandardPixmap standardIcon, const QStyleOption *option = Q_NULLPTR,
-                               const QWidget *widget = Q_NULLPTR) const = 0;
+    virtual QIcon standardIcon(StandardPixmap standardIcon, const QStyleOption *option = nullptr,
+                               const QWidget *widget = nullptr) const = 0;
 
     virtual QPixmap generatedIconPixmap(QIcon::Mode iconMode, const QPixmap &pixmap,
                                         const QStyleOption *opt) const = 0;
@@ -848,10 +848,10 @@ public:
 
     virtual int layoutSpacing(QSizePolicy::ControlType control1,
                               QSizePolicy::ControlType control2, Qt::Orientation orientation,
-                              const QStyleOption *option = Q_NULLPTR, const QWidget *widget = Q_NULLPTR) const = 0;
+                              const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const = 0;
     int combinedLayoutSpacing(QSizePolicy::ControlTypes controls1,
                               QSizePolicy::ControlTypes controls2, Qt::Orientation orientation,
-                              QStyleOption *option = Q_NULLPTR, QWidget *widget = Q_NULLPTR) const;
+                              QStyleOption *option = nullptr, QWidget *widget = nullptr) const;
 
     const QStyle * proxy() const;
 
diff --git a/src/widgets/styles/qstyleoption.h b/src/widgets/styles/qstyleoption.h
index af97479ef0..36dc65151c 100644
--- a/src/widgets/styles/qstyleoption.h
+++ b/src/widgets/styles/qstyleoption.h
@@ -677,7 +677,7 @@ T qstyleoption_cast(const QStyleOption *opt)
         || (int(Opt::Type) == QStyleOption::SO_Complex
             && opt->type > QStyleOption::SO_Complex)))
         return static_cast<T>(opt);
-    return Q_NULLPTR;
+    return nullptr;
 }
 
 template <typename T>
@@ -689,7 +689,7 @@ T qstyleoption_cast(QStyleOption *opt)
         || (int(Opt::Type) == QStyleOption::SO_Complex
             && opt->type > QStyleOption::SO_Complex)))
         return static_cast<T>(opt);
-    return Q_NULLPTR;
+    return nullptr;
 }
 
 // -------------------------- QStyleHintReturn -------------------------------
@@ -738,7 +738,7 @@ T qstyleoption_cast(const QStyleHintReturn *hint)
     if (hint && hint->version <= Opt::Version &&
         (hint->type == Opt::Type || int(Opt::Type) == QStyleHintReturn::SH_Default))
         return static_cast<T>(hint);
-    return Q_NULLPTR;
+    return nullptr;
 }
 
 template <typename T>
@@ -748,7 +748,7 @@ T qstyleoption_cast(QStyleHintReturn *hint)
     if (hint && hint->version <= Opt::Version &&
         (hint->type == Opt::Type || int(Opt::Type) == QStyleHintReturn::SH_Default))
         return static_cast<T>(hint);
-    return Q_NULLPTR;
+    return nullptr;
 }
 
 #if !defined(QT_NO_DEBUG_STREAM)
diff --git a/src/widgets/styles/qstylepainter.h b/src/widgets/styles/qstylepainter.h
index 191360727e..b5e7956cb1 100644
--- a/src/widgets/styles/qstylepainter.h
+++ b/src/widgets/styles/qstylepainter.h
@@ -51,7 +51,7 @@ QT_BEGIN_NAMESPACE
 class QStylePainter : public QPainter
 {
 public:
-    inline QStylePainter() : QPainter(), widget(Q_NULLPTR), wstyle(Q_NULLPTR) {}
+    inline QStylePainter() : QPainter(), widget(nullptr), wstyle(nullptr) {}
     inline explicit QStylePainter(QWidget *w) { begin(w, w); }
     inline QStylePainter(QPaintDevice *pd, QWidget *w) { begin(pd, w); }
     inline bool begin(QWidget *w) { return begin(w, w); }
diff --git a/src/widgets/styles/qstyleplugin.h b/src/widgets/styles/qstyleplugin.h
index d44f57d208..e9a26f9127 100644
--- a/src/widgets/styles/qstyleplugin.h
+++ b/src/widgets/styles/qstyleplugin.h
@@ -55,7 +55,7 @@ class Q_WIDGETS_EXPORT QStylePlugin : public QObject
 {
     Q_OBJECT
 public:
-    explicit QStylePlugin(QObject *parent = Q_NULLPTR);
+    explicit QStylePlugin(QObject *parent = nullptr);
     ~QStylePlugin();
 
     virtual QStyle *create(const QString &key) = 0;
diff --git a/src/widgets/styles/qstylesheetstyle.cpp b/src/widgets/styles/qstylesheetstyle.cpp
index c3e25cfd1b..6b611ab2b4 100644
--- a/src/widgets/styles/qstylesheetstyle.cpp
+++ b/src/widgets/styles/qstylesheetstyle.cpp
@@ -4250,7 +4250,7 @@ void QStyleSheetStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *op
     switch (pe) {
 
     case PE_FrameStatusBar: {
-        QRenderRule subRule = renderRule(w ? w->parentWidget() : Q_NULLPTR, opt, PseudoElement_Item);
+        QRenderRule subRule = renderRule(w ? w->parentWidget() : nullptr, opt, PseudoElement_Item);
         if (subRule.hasDrawable()) {
             subRule.drawRule(p, opt->rect);
             return;
diff --git a/src/widgets/styles/qwindowsstyle.cpp b/src/widgets/styles/qwindowsstyle.cpp
index 818c3ea07e..9aaf9c6be0 100644
--- a/src/widgets/styles/qwindowsstyle.cpp
+++ b/src/widgets/styles/qwindowsstyle.cpp
@@ -374,7 +374,7 @@ int QWindowsStylePrivate::fixedPixelMetric(QStyle::PixelMetric pm)
 
 static QWindow *windowOf(const QWidget *w)
 {
-    QWindow *result = Q_NULLPTR;
+    QWindow *result = nullptr;
     if (w) {
         result = w->windowHandle();
         if (!result) {
diff --git a/src/widgets/styles/qwindowsstyle_p_p.h b/src/widgets/styles/qwindowsstyle_p_p.h
index 8b387b6ab9..67fa6a2f86 100644
--- a/src/widgets/styles/qwindowsstyle_p_p.h
+++ b/src/widgets/styles/qwindowsstyle_p_p.h
@@ -73,7 +73,7 @@ public:
     static int fixedPixelMetric(QStyle::PixelMetric pm);
     static qreal devicePixelRatio(const QWidget *widget = 0)
         { return widget ? widget->devicePixelRatioF() : QWindowsStylePrivate::appDevicePixelRatio(); }
-    static qreal nativeMetricScaleFactor(const QWidget *widget = Q_NULLPTR);
+    static qreal nativeMetricScaleFactor(const QWidget *widget = nullptr);
 
     bool hasSeenAlt(const QWidget *widget) const;
     bool altDown() const { return alt_down; }