Another round of replacing 0 with nullptr

This time based on grepping to also include documentation, tests and
examples previously missed by the automatic tool.

Change-Id: Ied1703f4bcc470fbc275f759ed5b7c588a5c4e9f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

examples/dbus/chat/chat.h

@@ -85,7 +85,7 @@ class NicknameDialog: public QDialog, public Ui::NicknameDialog
 {
     Q_OBJECT
 public:
-    NicknameDialog(QWidget *parent = 0);
+    NicknameDialog(QWidget *parent = nullptr);
 };
 
 #endif // CHAT_H

examples/dbus/remotecontrolledcar/car/car.h

@@ -71,7 +71,7 @@ Q_SIGNALS:
     void crashed();
 
 protected:
-    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
+    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr);
     void timerEvent(QTimerEvent *event);
 
 private:

examples/dbus/remotecontrolledcar/controller/controller.h

@@ -59,7 +59,7 @@ class Controller : public QWidget
     Q_OBJECT
 
 public:
-    Controller(QWidget *parent = 0);
+    Controller(QWidget *parent = nullptr);
 
 protected:
     void timerEvent(QTimerEvent *event);

examples/embedded/digiflip/digiflip.cpp

@@ -298,7 +298,7 @@ class DigiFlip : public QMainWindow
     Q_OBJECT
 
 public:
-    DigiFlip(QWidget *parent = 0)
+    DigiFlip(QWidget *parent = nullptr)
         : QMainWindow(parent)
     {
         m_hour = new Digits(this);

examples/embedded/flickable/main.cpp

@@ -87,7 +87,7 @@ class ColorList : public QWidget, public Flickable
     Q_OBJECT
 
 public:
-    ColorList(QWidget *parent = 0)
+    ColorList(QWidget *parent = nullptr)
             : QWidget(parent) {
         m_offset = 0;
         m_height = QFontMetrics(font()).height() + 5;

examples/embedded/flightinfo/flightinfo.cpp

@@ -110,7 +110,7 @@ private:
 
 public:
 
-    FlightInfo(QMainWindow *parent = 0): QMainWindow(parent) {
+    FlightInfo(QMainWindow *parent = nullptr): QMainWindow(parent) {
 
         QWidget *w = new QWidget(this);
         ui.setupUi(w);

examples/embedded/lightmaps/lightmaps.h

@@ -61,7 +61,7 @@ class LightMaps: public QWidget
     Q_OBJECT
 
 public:
-    LightMaps(QWidget *parent = 0);
+    LightMaps(QWidget *parent = nullptr);
     void setCenter(qreal lat, qreal lng);
 
 public slots:
@@ -94,4 +94,4 @@ private:
     bool invert;
 };
 
-#endif
+#endif

examples/embedded/lightmaps/slippymap.h

@@ -65,7 +65,7 @@ class SlippyMap: public QObject
     Q_OBJECT
 
 public:
-    SlippyMap(QObject *parent = 0);
+    SlippyMap(QObject *parent = nullptr);
     void invalidate();
     void render(QPainter *p, const QRect &rect);
     void pan(const QPoint &delta);

examples/embedded/raycasting/raycasting.cpp

@@ -70,7 +70,7 @@ int world_map[WORLD_SIZE][WORLD_SIZE] = {
 class Raycasting: public QWidget
 {
 public:
-    Raycasting(QWidget *parent = 0)
+    Raycasting(QWidget *parent = nullptr)
             : QWidget(parent)
             , angle(0.5)
             , playerPos(1.5, 1.5)

examples/embedded/styleexample/stylewidget.h

@@ -58,7 +58,7 @@ class StyleWidget : public QFrame
 {
     Q_OBJECT
 public:
-    StyleWidget(QWidget *parent = 0);
+    StyleWidget(QWidget *parent = nullptr);
 
 private:
     Ui_StyleWidget m_ui;

examples/gui/rasterwindow/rasterwindow.h

@@ -58,7 +58,7 @@ class RasterWindow : public QWindow
 {
     Q_OBJECT
 public:
-    explicit RasterWindow(QWindow *parent = 0);
+    explicit RasterWindow(QWindow *parent = nullptr);
 
     virtual void render(QPainter *painter);
 

examples/qmake/precompile/mydialog.h

@@ -58,7 +58,7 @@ class MyDialog : public QDialog, public Ui::MyDialog
     Q_OBJECT
 
 public:
-    MyDialog(QWidget *parent = 0);
+    MyDialog(QWidget *parent = nullptr);
 };
 
 #endif

examples/qpa/windows/window.h

@@ -54,7 +54,7 @@
 class Window : public QWindow
 {
 public:
-    Window(QWindow *parent = 0);
+    Window(QWindow *parent = nullptr);
     Window(QScreen *screen);
 
 protected:

examples/widgets/itemviews/combowidgetmapper/window.h

@@ -70,7 +70,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window(QWidget *parent = 0);
+    Window(QWidget *parent = nullptr);
 
 private slots:
     void updateButtons(int row);

examples/widgets/itemviews/customsortfiltermodel/mysortfilterproxymodel.h

@@ -60,7 +60,7 @@ class MySortFilterProxyModel : public QSortFilterProxyModel
     Q_OBJECT
 
 public:
-    MySortFilterProxyModel(QObject *parent = 0);
+    MySortFilterProxyModel(QObject *parent = nullptr);
 
     QDate filterMinimumDate() const { return minDate; }
     void setFilterMinimumDate(QDate date);

examples/widgets/itemviews/pixelator/imagemodel.h

@@ -60,7 +60,7 @@ class ImageModel : public QAbstractTableModel
     Q_OBJECT
 
 public:
-    ImageModel(QObject *parent = 0);
+    ImageModel(QObject *parent = nullptr);
 
     void setImage(const QImage &image);
 

examples/widgets/layouts/dynamiclayouts/dialog.h

@@ -68,7 +68,7 @@ class Dialog : public QDialog
     Q_OBJECT
 
 public:
-    Dialog(QWidget *parent = 0);
+    Dialog(QWidget *parent = nullptr);
 
 private slots:
     void buttonsOrientationChanged(int index);

examples/widgets/painting/concentriccircles/circlewidget.h

@@ -59,7 +59,7 @@ class CircleWidget : public QWidget
     Q_OBJECT
 
 public:
-    CircleWidget(QWidget *parent = 0);
+    CircleWidget(QWidget *parent = nullptr);
 
     void setFloatBased(bool floatBased);
     void setAntialiased(bool antialiased);

examples/widgets/richtext/syntaxhighlighter/highlighter.h

@@ -65,7 +65,7 @@ class Highlighter : public QSyntaxHighlighter
     Q_OBJECT
 
 public:
-    Highlighter(QTextDocument *parent = 0);
+    Highlighter(QTextDocument *parent = nullptr);
 
 protected:
     void highlightBlock(const QString &text) override;

examples/widgets/richtext/syntaxhighlighter/mainwindow.h

@@ -65,7 +65,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
 
 public slots:
     void about();

examples/widgets/richtext/textedit/textedit.h

@@ -70,7 +70,7 @@ class TextEdit : public QMainWindow
     Q_OBJECT
 
 public:
-    TextEdit(QWidget *parent = 0);
+    TextEdit(QWidget *parent = nullptr);
 
     bool load(const QString &f);
 

examples/xml/dombookmarks/xbeltree.h

@@ -60,7 +60,7 @@ class XbelTree : public QTreeWidget
     Q_OBJECT
 
 public:
-    XbelTree(QWidget *parent = 0);
+    XbelTree(QWidget *parent = nullptr);
 
     bool read(QIODevice *device);
     bool write(QIODevice *device) const;
@@ -75,9 +75,9 @@ private slots:
 
 private:
     void parseFolderElement(const QDomElement &element,
-                            QTreeWidgetItem *parentItem = 0);
+                            QTreeWidgetItem *parentItem = nullptr);
     QTreeWidgetItem *createItem(const QDomElement &element,
-                                QTreeWidgetItem *parentItem = 0);
+                                QTreeWidgetItem *parentItem = nullptr);
 
     QDomDocument domDocument;
     QIcon folderIcon;

examples/xml/rsslisting/rsslisting.h

@@ -70,7 +70,7 @@ class RSSListing : public QWidget
 {
     Q_OBJECT
 public:
-    RSSListing(QWidget *widget = 0);
+    RSSListing(QWidget *widget = nullptr);
 
 public slots:
     void fetch();

src/corelib/doc/snippets/code/doc_src_properties.cpp

@@ -106,7 +106,7 @@ class MyClass : public QObject
     Q_PROPERTY(Priority priority READ priority WRITE setPriority NOTIFY priorityChanged)
 
 public:
-    MyClass(QObject *parent = 0);
+    MyClass(QObject *parent = nullptr);
     ~MyClass();
 
     enum Priority { High, Low, VeryHigh, VeryLow };

src/corelib/doc/snippets/eventfilters/filterobject.h

@@ -58,7 +58,7 @@ class FilterObject : public QObject
     Q_OBJECT
 
 public:
-    FilterObject(QObject *parent = 0);
+    FilterObject(QObject *parent = nullptr);
     bool eventFilter(QObject *object, QEvent *event) override;
     void setFilteredObject(QObject *object);
 

src/corelib/doc/snippets/qsortfilterproxymodel-details/main.cpp

@@ -55,7 +55,7 @@
 class MyItemModel : public QStandardItemModel
 {
 public:
-    MyItemModel(QWidget *parent = 0);
+    MyItemModel(QWidget *parent = nullptr);
 };
 
 MyItemModel::MyItemModel(QWidget *parent)
@@ -65,7 +65,7 @@ MyItemModel::MyItemModel(QWidget *parent)
 class Widget : public QWidget
 {
 public:
-    Widget(QWidget *parent = 0);
+    Widget(QWidget *parent = nullptr);
 };
 
 Widget::Widget(QWidget *parent)

src/corelib/doc/snippets/qstring/main.cpp

@@ -55,7 +55,7 @@
 class Widget : public QWidget
 {
 public:
-    Widget(QWidget *parent = 0);
+    Widget(QWidget *parent = nullptr);
 
     void constCharPointer();
     void constCharArray();

src/corelib/doc/snippets/qstringlist/main.cpp

@@ -55,7 +55,7 @@ using namespace std;
 class Widget : public QWidget
 {
 public:
-    Widget(QWidget *parent = 0);
+    Widget(QWidget *parent = nullptr);
 };
 
 Widget::Widget(QWidget *parent)

src/corelib/doc/snippets/qstringlistmodel/main.cpp

@@ -53,7 +53,7 @@
 class Widget : public QWidget
 {
 public:
-    Widget(QWidget *parent = 0);
+    Widget(QWidget *parent = nullptr);
 };
 
 Widget::Widget(QWidget *parent)

src/corelib/global/qglobal.h

@@ -1184,7 +1184,7 @@ Q_CORE_EXPORT QString qtTrId(const char *id, int n = -1);
 #  define dynamic_cast QT_PREPEND_NAMESPACE(qt_dynamic_cast_check)
 
   template<typename T, typename X>
-  T qt_dynamic_cast_check(X, T* = 0)
+  T qt_dynamic_cast_check(X, T* = nullptr)
   { return T::dynamic_cast_will_always_fail_because_rtti_is_disabled; }
 #endif
 

src/corelib/io/qfilesystemengine_win.cpp

@@ -567,7 +567,7 @@ QString QFileSystemEngine::nativeAbsoluteFilePath(const QString &path)
     // can be //server or //server/share
     QString absPath;
     QVarLengthArray<wchar_t, MAX_PATH> buf(qMax(MAX_PATH, path.size() + 1));
-    wchar_t *fileName = 0;
+    wchar_t *fileName = nullptr;
     DWORD retLen = GetFullPathName((wchar_t*)path.utf16(), buf.size(), buf.data(), &fileName);
     if (retLen > (DWORD)buf.size()) {
         buf.resize(retLen);

src/corelib/io/qfilesystemwatcher_win.cpp

@@ -406,7 +406,7 @@ QStringList QWindowsFileSystemWatcherEngine::addPaths(const QStringList &paths,
         pathInfo = fileInfo;
 
         // Look for a thread
-        QWindowsFileSystemWatcherEngineThread *thread = 0;
+        QWindowsFileSystemWatcherEngineThread *thread = nullptr;
         QWindowsFileSystemWatcherEngine::Handle handle;
         QList<QWindowsFileSystemWatcherEngineThread *>::const_iterator jt, end;
         end = threads.constEnd();

src/corelib/io/qstandardpaths_android.cpp

@@ -134,7 +134,7 @@ static QString getExternalStoragePublicDirectory(const char *directoryField)
  * Locations where applications can place persistent files it owns.
  * E.g., /storage/org.app/Music
  */
-static QString getExternalFilesDir(const char *directoryField = 0)
+static QString getExternalFilesDir(const char *directoryField = nullptr)
 {
     QString &path = (*androidDirCache)[QLatin1String("APPNAME_%1").arg(QLatin1String(directoryField))];
     if (!path.isEmpty())

src/corelib/io/qwindowspipereader_p.h

@@ -62,7 +62,7 @@ class Q_CORE_EXPORT QWindowsPipeReader : public QObject
 {
     Q_OBJECT
 public:
-    explicit QWindowsPipeReader(QObject *parent = 0);
+    explicit QWindowsPipeReader(QObject *parent = nullptr);
     ~QWindowsPipeReader();
 
     void setHandle(HANDLE hPipeReadEnd);

src/corelib/io/qwindowspipewriter_p.h

@@ -111,7 +111,7 @@ class Q_CORE_EXPORT QWindowsPipeWriter : public QObject
 {
     Q_OBJECT
 public:
-    explicit QWindowsPipeWriter(HANDLE pipeWriteEnd, QObject *parent = 0);
+    explicit QWindowsPipeWriter(HANDLE pipeWriteEnd, QObject *parent = nullptr);
     ~QWindowsPipeWriter();
 
     bool write(const QByteArray &ba);

src/corelib/kernel/qeventdispatcher_cf_p.h

@@ -209,7 +209,7 @@ class Q_CORE_EXPORT QEventDispatcherCoreFoundation : public QAbstractEventDispat
     Q_OBJECT
 
 public:
-    explicit QEventDispatcherCoreFoundation(QObject *parent = 0);
+    explicit QEventDispatcherCoreFoundation(QObject *parent = nullptr);
     void startingUp() override;
     ~QEventDispatcherCoreFoundation();
 

src/corelib/kernel/qeventdispatcher_win.cpp

@@ -162,8 +162,8 @@ LRESULT QT_WIN_CALLBACK qt_internal_proc(HWND hwnd, UINT message, WPARAM wp, LPA
 #else
     auto q = reinterpret_cast<QEventDispatcherWin32 *>(GetWindowLong(hwnd, GWL_USERDATA));
 #endif
-    QEventDispatcherWin32Private *d = 0;
-    if (q != 0)
+    QEventDispatcherWin32Private *d = nullptr;
+    if (q != nullptr)
         d = q->d_func();
 
     switch (message) {
@@ -187,7 +187,7 @@ LRESULT QT_WIN_CALLBACK qt_internal_proc(HWND hwnd, UINT message, WPARAM wp, LPA
             break;
         }
         if (type >= 0) {
-            Q_ASSERT(d != 0);
+            Q_ASSERT(d != nullptr);
             QSNDict *sn_vec[4] = { &d->sn_read, &d->sn_write, &d->sn_except, &d->sn_read };
             QSNDict *dict = sn_vec[type];
 
@@ -217,7 +217,7 @@ LRESULT QT_WIN_CALLBACK qt_internal_proc(HWND hwnd, UINT message, WPARAM wp, LPA
         return 0;
     }
     case WM_QT_ACTIVATENOTIFIERS: {
-        Q_ASSERT(d != 0);
+        Q_ASSERT(d != nullptr);
 
         // Postpone activation if we have unhandled socket notifier messages
         // in the queue. WM_QT_ACTIVATENOTIFIERS will be posted again as a result of
@@ -242,7 +242,7 @@ LRESULT QT_WIN_CALLBACK qt_internal_proc(HWND hwnd, UINT message, WPARAM wp, LPA
         return 0;
     }
     case WM_TIMER:
-        Q_ASSERT(d != 0);
+        Q_ASSERT(d != nullptr);
 
         if (wp == d->sendPostedEventsTimerId)
             q->sendPostedEvents();
@@ -250,7 +250,7 @@ LRESULT QT_WIN_CALLBACK qt_internal_proc(HWND hwnd, UINT message, WPARAM wp, LPA
             d->sendTimerEvent(wp);
         return 0;
     case WM_QT_SENDPOSTEDEVENTS:
-        Q_ASSERT(d != 0);
+        Q_ASSERT(d != nullptr);
 
         // We send posted events manually, if the window procedure was invoked
         // by the foreign event loop (e.g. from the native modal dialog).
@@ -268,7 +268,7 @@ LRESULT QT_WIN_CALLBACK qt_internal_proc(HWND hwnd, UINT message, WPARAM wp, LPA
 LRESULT QT_WIN_CALLBACK qt_GetMessageHook(int code, WPARAM wp, LPARAM lp)
 {
     QEventDispatcherWin32 *q = qobject_cast<QEventDispatcherWin32 *>(QAbstractEventDispatcher::instance());
-    Q_ASSERT(q != 0);
+    Q_ASSERT(q != nullptr);
     QEventDispatcherWin32Private *d = q->d_func();
     MSG *msg = reinterpret_cast<MSG *>(lp);
     // Windows unexpectedly passes PM_NOYIELD flag to the hook procedure,

src/corelib/kernel/qeventdispatcher_win_p.h

@@ -73,7 +73,7 @@ class Q_CORE_EXPORT QEventDispatcherWin32 : public QAbstractEventDispatcher
     Q_DECLARE_PRIVATE(QEventDispatcherWin32)
 
 public:
-    explicit QEventDispatcherWin32(QObject *parent = 0);
+    explicit QEventDispatcherWin32(QObject *parent = nullptr);
     ~QEventDispatcherWin32();
 
     bool QT_ENSURE_STACK_ALIGNED_FOR_SSE processEvents(QEventLoop::ProcessEventsFlags flags) override;
@@ -103,7 +103,7 @@ public:
     HWND internalHwnd();
 
 protected:
-    QEventDispatcherWin32(QEventDispatcherWin32Private &dd, QObject *parent = 0);
+    QEventDispatcherWin32(QEventDispatcherWin32Private &dd, QObject *parent = nullptr);
     virtual void sendPostedEvents();
     void doUnregisterSocketNotifier(QSocketNotifier *notifier);
     void doUnregisterEventNotifier(QWinEventNotifier *notifier);

src/corelib/kernel/qjni.cpp

@@ -81,7 +81,7 @@ static QByteArray toBinaryEncClassName(const QByteArray &className)
     return QByteArray(className).replace('/', '.');
 }
 
-static jclass getCachedClass(const QByteArray &classBinEnc, bool *isCached = 0)
+static jclass getCachedClass(const QByteArray &classBinEnc, bool *isCached = nullptr)
 {
     QReadLocker locker(cachedClassesLock);
     const QHash<QString, jclass>::const_iterator &it = cachedClasses->constFind(QString::fromLatin1(classBinEnc));

src/corelib/kernel/qjni_p.h

@@ -72,7 +72,7 @@ public:
     ~QJNIEnvironmentPrivate();
     JNIEnv *operator->();
     operator JNIEnv*() const;
-    static jclass findClass(const char *className, JNIEnv *env = 0);
+    static jclass findClass(const char *className, JNIEnv *env = nullptr);
 
 private:
     friend class QAndroidJniEnvironment;

src/corelib/kernel/qmetatype.cpp

@@ -579,7 +579,7 @@ const QMetaObject *QMetaType::metaObject() const
 }
 
 /*!
-    \fn void *QMetaType::create(const void *copy = 0) const
+    \fn void *QMetaType::create(const void *copy = nullptr) const
     \since 5.0
 
     Returns a copy of \a copy, assuming it is of the type that this
@@ -624,7 +624,7 @@ void QMetaType::destroy(void *data) const
 }
 
 /*!
-    \fn void *QMetaType::construct(void *where, const void *copy = 0) const
+    \fn void *QMetaType::construct(void *where, const void *copy = nullptr) const
     \since 5.0
 
     Constructs a value of the type that this QMetaType instance

src/corelib/kernel/qpoll.cpp

@@ -177,7 +177,7 @@ int qt_poll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout_ts)
     }
 
     fd_set read_fds, write_fds, except_fds;
-    struct timeval tv, *ptv = 0;
+    struct timeval tv, *ptv = nullptr;
 
     if (timeout_ts) {
         tv = timespecToTimeval(*timeout_ts);

src/corelib/kernel/qproperty.h

@@ -207,7 +207,7 @@ public:
 namespace Qt {
     template <typename Functor>
     auto makePropertyBinding(Functor &&f, const QPropertyBindingSourceLocation &location = QT_PROPERTY_DEFAULT_BINDING_LOCATION,
-                             std::enable_if_t<std::is_invocable_v<Functor>> * = 0)
+                             std::enable_if_t<std::is_invocable_v<Functor>> * = nullptr)
     {
         return QPropertyBinding<std::invoke_result_t<Functor>>(std::forward<Functor>(f), location);
     }
@@ -321,7 +321,7 @@ public:
 #ifndef Q_CLANG_QDOC
     template <typename Functor>
     explicit QProperty(Functor &&f, const QPropertyBindingSourceLocation &location = QT_PROPERTY_DEFAULT_BINDING_LOCATION,
-                       typename std::enable_if_t<std::is_invocable_r_v<T, Functor&>> * = 0)
+                       typename std::enable_if_t<std::is_invocable_r_v<T, Functor&>> * = nullptr)
         : QProperty(QPropertyBinding<T>(std::forward<Functor>(f), location))
     {}
 #else
@@ -821,7 +821,7 @@ public:
 #ifndef Q_CLANG_QDOC
     template <typename Functor>
     explicit QObjectBindableProperty(Functor &&f, const QPropertyBindingSourceLocation &location = QT_PROPERTY_DEFAULT_BINDING_LOCATION,
-                       typename std::enable_if_t<std::is_invocable_r_v<T, Functor&>> * = 0)
+                       typename std::enable_if_t<std::is_invocable_r_v<T, Functor&>> * = nullptr)
         : QObjectBindableProperty(QPropertyBinding<T>(std::forward<Functor>(f), location))
     {}
 #else

src/corelib/kernel/qsystemerror.cpp

@@ -76,7 +76,7 @@ namespace {
 static QString windowsErrorString(int errorCode)
 {
     QString ret;
-    wchar_t *string = 0;
+    wchar_t *string = nullptr;
     FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
                   NULL,
                   errorCode,

src/corelib/plugin/qmachparser.cpp

@@ -103,7 +103,7 @@ int QMachOParser::parse(const char *m_s, ulong fdlen, const QString &library, QS
         return ns(QLibrary::tr("file too small"), library, errorString);
 
     // find out if this is a fat Mach-O binary first
-    const my_mach_header *header = 0;
+    const my_mach_header *header = nullptr;
     const fat_header *fat = reinterpret_cast<const fat_header *>(m_s);
     if (fat->magic == qToBigEndian(FAT_MAGIC)) {
         // find our architecture in the binary

src/corelib/thread/qthread.cpp

@@ -895,7 +895,7 @@ bool QThread::isRunning() const
 }
 
 // No threads: so we can just use static variables
-static QThreadData *data = 0;
+static QThreadData *data = nullptr;
 
 QThreadData *QThreadData::current(bool createIfNecessary)
 {

src/corelib/thread/qthread_p.h

@@ -208,7 +208,7 @@ public:
 class QThreadPrivate : public QObjectPrivate
 {
 public:
-    QThreadPrivate(QThreadData *d = 0);
+    QThreadPrivate(QThreadData *d = nullptr);
     ~QThreadPrivate();
 
     mutable QMutex mutex;

src/corelib/tools/qscopedpointer.cpp

@@ -126,7 +126,7 @@ QT_BEGIN_NAMESPACE
  */
 
 /*!
-    \fn template <typename T, typename Cleanup> QScopedPointer<T, Cleanup>::QScopedPointer(T *p = 0)
+    \fn template <typename T, typename Cleanup> QScopedPointer<T, Cleanup>::QScopedPointer(T *p = nullptr)
 
     Constructs this QScopedPointer instance and sets its pointer to \a p.
 */
@@ -242,7 +242,7 @@ QT_BEGIN_NAMESPACE
 */
 
 /*!
-    \fn template <typename T, typename Cleanup> void QScopedPointer<T, Cleanup>::reset(T *other = 0)
+    \fn template <typename T, typename Cleanup> void QScopedPointer<T, Cleanup>::reset(T *other = nullptr)
 
     Deletes the existing object it is pointing to (if any), and sets its pointer to
     \a other. QScopedPointer now owns \a other and will delete it in its

src/corelib/tools/qscopedpointer_p.h

@@ -64,7 +64,7 @@ template <typename T, typename Cleanup = QScopedPointerDeleter<T> >
 class QCustomScopedPointer : public QScopedPointer<T, Cleanup>
 {
 public:
-    explicit inline QCustomScopedPointer(T *p = 0)
+    explicit inline QCustomScopedPointer(T *p = nullptr)
         : QScopedPointer<T, Cleanup>(p)
     {
     }
@@ -107,7 +107,7 @@ template <typename T>
 class QScopedSharedPointer : public QCustomScopedPointer<T, QScopedPointerSharedDeleter<T> >
 {
 public:
-    explicit inline QScopedSharedPointer(T *p = 0)
+    explicit inline QScopedSharedPointer(T *p = nullptr)
         : QCustomScopedPointer<T, QScopedPointerSharedDeleter<T> >(p)
     {
     }

src/dbus/qdbus_symbols.cpp

@@ -56,7 +56,7 @@ void (*qdbus_resolve_me(const char *name))();
 #if !defined QT_LINKED_LIBDBUS
 
 #if QT_CONFIG(library)
-static QLibrary *qdbus_libdbus = 0;
+static QLibrary *qdbus_libdbus = nullptr;
 
 void qdbus_unloadLibDBus()
 {
@@ -66,7 +66,7 @@ void qdbus_unloadLibDBus()
         qdbus_libdbus->unload();
     }
     delete qdbus_libdbus;
-    qdbus_libdbus = 0;
+    qdbus_libdbus = nullptr;
 }
 #endif
 
@@ -118,7 +118,7 @@ bool qdbus_loadLibDBus()
     }
 
     delete lib;
-    lib = 0;
+    lib = nullptr;
     return false;
 #else
     return true;

src/gui/doc/snippets/textdocument-listitems/mainwindow.cpp

@@ -130,9 +130,9 @@ void MainWindow::showList()
     headerLabels << tr("Lists");
     treeWidget->setHeaderLabels(headerLabels);
 
-    QTreeWidgetItem *parentItem = 0;
+    QTreeWidgetItem *parentItem = nullptr;
     QTreeWidgetItem *item;
-    QTreeWidgetItem *lastItem = 0;
+    QTreeWidgetItem *lastItem = nullptr;
     parentItems.clear();
     previousItems.clear();
 

src/gui/kernel/qguiapplication.cpp

@@ -1752,7 +1752,7 @@ void restoreOverrideCursor();
 static QFont font();
 static QFont font(const QWidget*);
 static QFont font(const char *className);
-static void setFont(const QFont &, const char* className = 0);
+static void setFont(const QFont &, const char *className = nullptr);
 static QFontMetrics fontMetrics();
 
 #ifndef QT_NO_CLIPBOARD

src/gui/opengl/qopenglfunctions.h

@@ -68,7 +68,7 @@ typedef double GLdouble;
         unsigned clamped = qMin(unsigned(error - GL_INVALID_ENUM), 4U); \
         const char *errors[] = { "GL_INVALID_ENUM", "GL_INVALID_VALUE", "GL_INVALID_OPERATION", "Unknown" }; \
         printf("GL error at %s:%d: %s\n", __FILE__, __LINE__, errors[clamped]); \
-        int *value = 0; \
+        int *value = nullptr; \
         *value = 0; \
     }
 #else

src/gui/painting/qcoregraphics.mm

@@ -510,7 +510,7 @@ void QMacCGContext::initialize(const QImage *image, QPainter *painter)
                 clip &= painterClip;
         }
 
-        qt_mac_clip_cg(context, clip, 0);
+        qt_mac_clip_cg(context, clip, nullptr);
 
         CGContextTranslateCTM(context, deviceTransform.dx(), deviceTransform.dy());
     }

src/gui/platform/windows/qwindowsguieventdispatcher_p.h

@@ -60,7 +60,7 @@ class Q_GUI_EXPORT QWindowsGuiEventDispatcher : public QEventDispatcherWin32
 {
     Q_OBJECT
 public:
-    explicit QWindowsGuiEventDispatcher(QObject *parent = 0);
+    explicit QWindowsGuiEventDispatcher(QObject *parent = nullptr);
 
     static const char *windowsMessageName(UINT msg);
 

src/gui/text/qstatictext.cpp

@@ -84,7 +84,7 @@ QStaticTextUserData::~QStaticTextUserData()
     class MyWidget: public QWidget
     {
     public:
-        MyWidget(QWidget *parent = 0) : QWidget(parent), m_staticText("This is static text")
+        MyWidget(QWidget *parent = nullptr) : QWidget(parent), m_staticText("This is static text")
 
     protected:
         void paintEvent(QPaintEvent *)

src/gui/text/windows/qwindowsfontdatabase.cpp

@@ -1139,7 +1139,7 @@ QFontEngine *QWindowsFontDatabase::createEngine(const QFontDef &request, const Q
                                                 int dpi,
                                                 const QSharedPointer<QWindowsFontEngineData> &data)
 {
-    QFontEngine *fe = 0;
+    QFontEngine *fe = nullptr;
 
     LOGFONT lf = fontDefToLOGFONT(request, faceName);
     const bool preferClearTypeAA = lf.lfQuality == CLEARTYPE_QUALITY;

src/gui/text/windows/qwindowsfontengine.cpp

@@ -642,7 +642,7 @@ qreal QWindowsFontEngine::minRightBearing() const
         HDC hdc = m_fontEngineData->hdc;
         SelectObject(hdc, hfont);
         if (ttf) {
-            ABC *abc = 0;
+            ABC *abc = nullptr;
             int n = tm.tmLastChar - tm.tmFirstChar;
             if (n <= max_font_count) {
                 abc = new ABC[n+1];
@@ -706,7 +706,7 @@ static inline QPointF qt_to_qpointf(const POINTFX &pt, qreal scale, qreal stretc
 #endif
 
 static bool addGlyphToPath(glyph_t glyph, const QFixedPoint &position, HDC hdc,
-                           QPainterPath *path, bool ttf, glyph_metrics_t *metric = 0,
+                           QPainterPath *path, bool ttf, glyph_metrics_t *metric = nullptr,
                            qreal scale = 1.0, qreal stretch = 1.0)
 {
     MAT2 mat;

src/gui/text/windows/qwindowsfontengine_p.h

@@ -115,7 +115,7 @@ public:
     bool supportsTransformation(const QTransform &transform) const override;
 
 #ifndef Q_CC_MINGW
-    void getGlyphBearings(glyph_t glyph, qreal *leftBearing = 0, qreal *rightBearing = 0) override;
+    void getGlyphBearings(glyph_t glyph, qreal *leftBearing = nullptr, qreal *rightBearing = nullptr) override;
 #endif
 
     bool hasUnreliableGlyphOutline() const override;

src/network/kernel/qnetworkinterface_unix.cpp

@@ -209,7 +209,7 @@ static QSet<QByteArray> interfaceNames(int socket)
 static QNetworkInterfacePrivate *findInterface(int socket, QList<QNetworkInterfacePrivate *> &interfaces,
                                                struct ifreq &req)
 {
-    QNetworkInterfacePrivate *iface = 0;
+    QNetworkInterfacePrivate *iface = nullptr;
     int ifindex = 0;
 
 #if !defined(QT_NO_IPV6IFNAME) || defined(SIOCGIFINDEX)
@@ -618,7 +618,7 @@ static QList<QNetworkInterfacePrivate *> interfaceListing()
     for (ifaddrs *ptr = interfaceListing; ptr; ptr = ptr->ifa_next) {
         // Find the interface
         QLatin1String name(ptr->ifa_name);
-        QNetworkInterfacePrivate *iface = 0;
+        QNetworkInterfacePrivate *iface = nullptr;
         QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
         for ( ; if_it != interfaces.end(); ++if_it)
             if ((*if_it)->name == name) {

src/platformsupport/devicediscovery/qdevicediscovery_dummy_p.h

@@ -60,7 +60,7 @@ class QDeviceDiscoveryDummy : public QDeviceDiscovery
     Q_OBJECT
 
 public:
-    QDeviceDiscoveryDummy(QDeviceTypes types, QObject *parent = 0);
+    QDeviceDiscoveryDummy(QDeviceTypes types, QObject *parent = nullptr);
     QStringList scanConnectedDevices() override;
 };
 

src/platformsupport/devicediscovery/qdevicediscovery_static_p.h

@@ -60,7 +60,7 @@ class QDeviceDiscoveryStatic : public QDeviceDiscovery
     Q_OBJECT
 
 public:
-    QDeviceDiscoveryStatic(QDeviceTypes types, QObject *parent = 0);
+    QDeviceDiscoveryStatic(QDeviceTypes types, QObject *parent = nullptr);
     QStringList scanConnectedDevices() override;
 
 private:

src/platformsupport/devicediscovery/qdevicediscovery_udev.cpp

@@ -60,7 +60,7 @@ QDeviceDiscovery *QDeviceDiscovery::create(QDeviceTypes types, QObject *parent)
 {
     qCDebug(lcDD) << "udev device discovery for type" << types;
 
-    QDeviceDiscovery *helper = 0;
+    QDeviceDiscovery *helper = nullptr;
     struct udev *udev;
 
     udev = udev_new();

src/platformsupport/input/evdevkeyboard/qevdevkeyboardhandler.cpp

@@ -250,8 +250,8 @@ QEvdevKeyboardHandler::KeycodeAction QEvdevKeyboardHandler::processKeycode(quint
     KeycodeAction result = None;
     bool first_press = pressed && !autorepeat;
 
-    const QEvdevKeyboardMap::Mapping *map_plain = 0;
-    const QEvdevKeyboardMap::Mapping *map_withmod = 0;
+    const QEvdevKeyboardMap::Mapping *map_plain = nullptr;
+    const QEvdevKeyboardMap::Mapping *map_withmod = nullptr;
 
     quint8 modifiers = m_modifiers;
 

src/platformsupport/input/tslib/qtslib_p.h

@@ -64,7 +64,7 @@ class QTsLibMouseHandler : public QObject
     Q_OBJECT
 
 public:
-    QTsLibMouseHandler(const QString &key, const QString &specification, QObject *parent = 0);
+    QTsLibMouseHandler(const QString &key, const QString &specification, QObject *parent = nullptr);
     ~QTsLibMouseHandler();
 
 private slots:

src/plugins/platforms/android/androidjniaccessibility.cpp

@@ -98,7 +98,7 @@ namespace QtAndroidAccessibility
 
     QAccessibleInterface *interfaceFromId(jint objectId)
     {
-        QAccessibleInterface *iface = 0;
+        QAccessibleInterface *iface = nullptr;
         if (objectId == -1) {
             QWindow *win = qApp->focusWindow();
             if (win)
@@ -164,7 +164,7 @@ namespace QtAndroidAccessibility
             QPoint pos = QHighDpi::fromNativePixels(QPoint(int(x), int(y)), root->window());
 
             QAccessibleInterface *child = root->childAt(pos.x(), pos.y());
-            QAccessibleInterface *lastChild = 0;
+            QAccessibleInterface *lastChild = nullptr;
             while (child && (child != lastChild)) {
                 lastChild = child;
                 child = child->childAt(pos.x(), pos.y());

src/plugins/platforms/android/androidjnimain.h

@@ -96,9 +96,9 @@ namespace QtAndroid
     };
     void setSystemUiVisibility(SystemUiVisibility uiVisibility);
 
-    jobject createBitmap(QImage img, JNIEnv *env = 0);
+    jobject createBitmap(QImage img, JNIEnv *env = nullptr);
     jobject createBitmap(int width, int height, QImage::Format format, JNIEnv *env);
-    jobject createBitmapDrawable(jobject bitmap, JNIEnv *env = 0);
+    jobject createBitmapDrawable(jobject bitmap, JNIEnv *env = nullptr);
 
     const char *classErrorMsgFmt();
     const char *methodErrorMsgFmt();

src/plugins/platforms/android/androidjnimenu.cpp

@@ -59,12 +59,12 @@ using namespace QtAndroid;
 namespace QtAndroidMenu
 {
     static QList<QAndroidPlatformMenu *> pendingContextMenus;
-    static QAndroidPlatformMenu *visibleMenu = 0;
+    static QAndroidPlatformMenu *visibleMenu = nullptr;
     static QRecursiveMutex visibleMenuMutex;
 
     static QSet<QAndroidPlatformMenuBar *> menuBars;
-    static QAndroidPlatformMenuBar *visibleMenuBar = 0;
-    static QWindow *activeTopLevelWindow = 0;
+    static QAndroidPlatformMenuBar *visibleMenuBar = nullptr;
+    static QWindow *activeTopLevelWindow = nullptr;
     static QRecursiveMutex menuBarMutex;
 
     static jmethodID openContextMenuMethodID = 0;

src/plugins/platforms/android/qandroideventdispatcher.h

@@ -48,7 +48,7 @@ class QAndroidEventDispatcher : public QUnixEventDispatcherQPA
 {
     Q_OBJECT
 public:
-    explicit QAndroidEventDispatcher(QObject *parent = 0);
+    explicit QAndroidEventDispatcher(QObject *parent = nullptr);
     ~QAndroidEventDispatcher();
     void start();
     void stop();

src/plugins/platforms/android/qandroidinputcontext.cpp

@@ -91,7 +91,7 @@ private:
 
 } // namespace anonymous
 
-static QAndroidInputContext *m_androidInputContext = 0;
+static QAndroidInputContext *m_androidInputContext = nullptr;
 static char const *const QtNativeInputConnectionClassName = "org/qtproject/qt/android/QtNativeInputConnection";
 static char const *const QtExtractedTextClassName = "org/qtproject/qt/android/QtExtractedText";
 static jclass m_extractedTextClass = 0;

src/plugins/platforms/directfb/main.cpp

@@ -64,7 +64,7 @@ public:
 QPlatformIntegration * QDirectFbIntegrationPlugin::create(const QString& system, const QStringList& paramList)
 {
     Q_UNUSED(paramList);
-    QDirectFbIntegration *integration = 0;
+    QDirectFbIntegration *integration = nullptr;
 
     if (!system.compare(QLatin1String("directfb"), Qt::CaseInsensitive))
         integration = new QDirectFbIntegration;

src/plugins/platforms/directfb/qdirectfb_egl.cpp

@@ -58,7 +58,7 @@ QT_BEGIN_NAMESPACE
 extern QDirectFBEGLHooks platform_hook;
 static QDirectFBEGLHooks *hooks = &platform_hook;
 #else
-static QDirectFBEGLHooks *hooks = 0;
+static QDirectFBEGLHooks *hooks = nullptr;
 #endif
 
 /**

src/plugins/platforms/directfb/qdirectfbconvenience.cpp

@@ -50,7 +50,7 @@ QT_BEGIN_NAMESPACE
 
 IDirectFB *QDirectFbConvenience::dfbInterface()
 {
-    static IDirectFB *dfb = 0;
+    static IDirectFB *dfb = nullptr;
     if (!dfb) {
         DFBResult result = DirectFBCreate(&dfb);
         if (result != DFB_OK) {
@@ -247,7 +247,7 @@ QEvent::Type QDirectFbConvenience::eventType(DFBWindowEventType type)
         return QEvent::None;
     }
 }
-QDirectFbKeyMap *QDirectFbConvenience::dfbKeymap = 0;
+QDirectFbKeyMap *QDirectFbConvenience::dfbKeymap = nullptr;
 QDirectFbKeyMap *QDirectFbConvenience::keyMap()
 {
     if (!dfbKeymap)

src/plugins/platforms/directfb/qdirectfbconvenience.h

@@ -98,13 +98,13 @@ template <typename T>
 class QDirectFBPointer : public QScopedPointer<T, QDirectFBInterfaceCleanupHandler<T> >
 {
 public:
-    QDirectFBPointer(T *t = 0)
+    QDirectFBPointer(T *t = nullptr)
         : QScopedPointer<T, QDirectFBInterfaceCleanupHandler<T> >(t)
     {}
 
     T** outPtr()
     {
-        this->reset(0);
+        this->reset(nullptr);
         return &this->d;
     }
 };

src/plugins/platforms/integrity/qintegrityhidmanager.h

@@ -52,7 +52,7 @@ class QIntegrityHIDManager : public QThread
 {
     Q_OBJECT
 public:
-    QIntegrityHIDManager(const QString &key, const QString &specification, QObject *parent = 0);
+    QIntegrityHIDManager(const QString &key, const QString &specification, QObject *parent = nullptr);
     ~QIntegrityHIDManager();
 
     void run(void);

src/plugins/platforms/ios/optional/nsphotolibrarysupport/plugin.mm

@@ -52,7 +52,7 @@ class QIosOptionalPlugin_NSPhotoLibrary : public QObject, QIosOptionalPluginInte
     Q_INTERFACES(QIosOptionalPluginInterface)
 
 public:
-    explicit QIosOptionalPlugin_NSPhotoLibrary(QObject* = 0) {};
+    explicit QIosOptionalPlugin_NSPhotoLibrary(QObject * = nullptr) {};
     ~QIosOptionalPlugin_NSPhotoLibrary() {}
 
     UIViewController* createImagePickerController(QIOSFileDialog *fileDialog) const override

src/plugins/platforms/ios/optional/nsphotolibrarysupport/qiosfileengineassetslibrary.mm

@@ -54,7 +54,7 @@ static QThreadStorage<QString> g_iteratorCurrentUrl;
 static QThreadStorage<QPointer<QIOSAssetData> > g_assetDataCache;
 
 static const int kBufferSize = 10;
-static ALAsset *kNoAsset = 0;
+static ALAsset *kNoAsset = nullptr;
 
 static bool ensureAuthorizationDialogNotBlocked()
 {
@@ -366,7 +366,7 @@ bool QIOSFileEngineAssetsLibrary::close()
         // Delete later, so that we can reuse the asset if a QFile is
         // opened with the same path during the same event loop cycle.
         m_data->deleteLater();
-        m_data = 0;
+        m_data = nullptr;
     }
     return true;
 }
@@ -410,7 +410,7 @@ qint64 QIOSFileEngineAssetsLibrary::read(char *data, qint64 maxlen)
     if (!bytesRead)
         return 0;
 
-    NSError *error = 0;
+    NSError *error = nullptr;
     [[asset defaultRepresentation] getBytes:(uint8_t *)data fromOffset:m_offset length:bytesRead error:&error];
 
     if (error) {

src/plugins/platforms/ios/qioseventdispatcher.h

@@ -53,7 +53,7 @@ public:
     bool processPostedEvents() override;
 
 protected:
-    explicit QIOSEventDispatcher(QObject *parent = 0);
+    explicit QIOSEventDispatcher(QObject *parent = nullptr);
 };
 
 class QIOSJumpingEventDispatcher : public QIOSEventDispatcher
@@ -61,7 +61,7 @@ class QIOSJumpingEventDispatcher : public QIOSEventDispatcher
     Q_OBJECT
 
 public:
-    QIOSJumpingEventDispatcher(QObject *parent = 0);
+    QIOSJumpingEventDispatcher(QObject *parent = nullptr);
     bool processEvents(QEventLoop::ProcessEventsFlags flags) override;
 
     // Public since we can't friend Objective-C methods
@@ -76,4 +76,4 @@ private:
 
 QT_END_NAMESPACE
 
-#endif // QIOSEVENTDISPATCHER_H
+#endif // QIOSEVENTDISPATCHER_H

src/plugins/platforms/ios/qiosglobal.mm

@@ -185,7 +185,7 @@ FirstResponderCandidate::FirstResponderCandidate(UIResponder *responder)
 {
 }
 
-UIResponder *FirstResponderCandidate::s_firstResponderCandidate = 0;
+UIResponder *FirstResponderCandidate::s_firstResponderCandidate = nullptr;
 
 QT_END_NAMESPACE
 

src/plugins/platforms/ios/qiosinputcontext.h

@@ -111,7 +111,7 @@ public:
     void scrollToCursor();
     void scroll(int y);
 
-    void updateKeyboardState(NSNotification *notification = 0);
+    void updateKeyboardState(NSNotification *notification = nullptr);
 
     const ImeState &imeState() { return m_imeState; }
     const KeyboardState &keyboardState() { return m_keyboardState; }

src/plugins/platforms/ios/qiosmenu.mm

@@ -54,7 +54,7 @@
 // m_currentMenu points to the currently visible menu.
 // Only one menu will be visible at a time, and if a second menu
 // is shown on top of a first, the first one will be told to hide.
-QIOSMenu *QIOSMenu::m_currentMenu = 0;
+QIOSMenu *QIOSMenu::m_currentMenu = nullptr;
 
 // -------------------------------------------------------------------------
 
@@ -441,7 +441,7 @@ void QIOSMenu::dismiss()
         break;
     }
 
-    m_currentMenu = 0;
+    m_currentMenu = nullptr;
     m_visible = false;
 }
 
@@ -458,13 +458,13 @@ void QIOSMenu::toggleShowUsingUIMenuController(bool show)
         Q_ASSERT(m_menuController);
         [[UIMenuController sharedMenuController] setMenuVisible:NO animated:YES];
         [m_menuController release];
-        m_menuController = 0;
+        m_menuController = nullptr;
     }
 }
 
 void QIOSMenu::toggleShowUsingUIPickerView(bool show)
 {
-    static QObject *focusObjectWithPickerView = 0;
+    static QObject *focusObjectWithPickerView = nullptr;
 
     if (show) {
         Q_ASSERT(!m_pickerView);
@@ -477,12 +477,12 @@ void QIOSMenu::toggleShowUsingUIPickerView(bool show)
     } else {
         Q_ASSERT(focusObjectWithPickerView);
         focusObjectWithPickerView->removeEventFilter(this);
-        focusObjectWithPickerView = 0;
+        focusObjectWithPickerView = nullptr;
 
         Q_ASSERT(m_pickerView);
         [m_pickerView listenForKeyboardWillHideNotification:NO];
         [m_pickerView release];
-        m_pickerView = 0;
+        m_pickerView = nullptr;
 
         qApp->inputMethod()->update(Qt::ImEnabled | Qt::ImPlatformData);
     }

src/plugins/platforms/qnx/qqnxabstractnavigator.h

@@ -50,7 +50,7 @@ class QQnxAbstractNavigator : public QObject
 {
     Q_OBJECT
 public:
-    explicit QQnxAbstractNavigator(QObject *parent = 0);
+    explicit QQnxAbstractNavigator(QObject *parent = nullptr);
     ~QQnxAbstractNavigator();
 
     bool invokeUrl(const QUrl &url);

src/plugins/platforms/qnx/qqnxabstractvirtualkeyboard.h

@@ -64,7 +64,7 @@ public:
     enum KeyboardMode { Default, Url, Email, Web, NumPunc, Number, Symbol, Phone, Pin, Password, Alphanumeric };
     enum EnterKeyType { DefaultReturn, Connect, Done, Go, Join, Next, Search, Send, Submit };
 
-    explicit QQnxAbstractVirtualKeyboard(QObject *parent = 0);
+    explicit QQnxAbstractVirtualKeyboard(QObject *parent = nullptr);
 
     virtual bool showKeyboard() = 0;
     virtual bool hideKeyboard() = 0;

src/plugins/platforms/qnx/qqnxbuffer.cpp

@@ -77,7 +77,7 @@ QQnxBuffer::QQnxBuffer(screen_buffer_t buffer)
 
     // Get access to buffer's data
     errno = 0;
-    uchar *dataPtr = 0;
+    uchar *dataPtr = nullptr;
     Q_SCREEN_CRITICALERROR(
             screen_get_buffer_property_pv(buffer, SCREEN_PROPERTY_POINTER, (void **)&dataPtr),
             "Failed to query buffer pointer");

src/plugins/platforms/qnx/qqnxbuffer.h

@@ -55,8 +55,8 @@ public:
     virtual ~QQnxBuffer();
 
     screen_buffer_t nativeBuffer() const { return m_buffer; }
-    const QImage *image() const { return (m_buffer != 0) ? &m_image : 0; }
-    QImage *image() { return (m_buffer != 0) ? &m_image : 0; }
+    const QImage *image() const { return (m_buffer != nullptr) ? &m_image : nullptr; }
+    QImage *image() { return (m_buffer != nullptr) ? &m_image : nullptr; }
 
     QRect rect() const { return m_image.rect(); }
 

src/plugins/platforms/qnx/qqnxbuttoneventnotifier.h

@@ -64,7 +64,7 @@ public:
         ButtonDown
     };
 
-    explicit QQnxButtonEventNotifier(QObject *parent = 0);
+    explicit QQnxButtonEventNotifier(QObject *parent = nullptr);
     ~QQnxButtonEventNotifier();
 
 public Q_SLOTS:

src/plugins/platforms/qnx/qqnxinputcontext_imf.cpp

@@ -76,8 +76,8 @@
 static QQnxInputContext *sInputContextInstance;
 static QColor sSelectedColor(0,0xb8,0,85);
 
-static const input_session_t *sSpellCheckSession = 0;
-static const input_session_t *sInputSession = 0;
+static const input_session_t *sSpellCheckSession = nullptr;
+static const input_session_t *sInputSession = nullptr;
 static bool isSessionOkay(input_session_t *ic)
 {
     return ic !=0 && sInputSession != 0 && ic->component_id == sInputSession->component_id;
@@ -515,13 +515,13 @@ static spannable_string_t *toSpannableString(const QString &text)
 }
 
 
-static const input_session_t *(*p_ictrl_open_session)(connection_interface_t *) = 0;
-static void (*p_ictrl_close_session)(input_session_t *) = 0;
-static int32_t (*p_ictrl_dispatch_event)(event_t*) = 0;
-static int32_t (*p_imf_client_init)() = 0;
-static void (*p_imf_client_disconnect)() = 0;
-static int32_t (*p_vkb_init_selection_service)() = 0;
-static int32_t (*p_ictrl_get_num_active_sessions)() = 0;
+static const input_session_t *(*p_ictrl_open_session)(connection_interface_t *) = nullptr;
+static void (*p_ictrl_close_session)(input_session_t *) = nullptr;
+static int32_t (*p_ictrl_dispatch_event)(event_t*) = nullptr;
+static int32_t (*p_imf_client_init)() = nullptr;
+static void (*p_imf_client_disconnect)() = nullptr;
+static int32_t (*p_vkb_init_selection_service)() = nullptr;
+static int32_t (*p_ictrl_get_num_active_sessions)() = nullptr;
 static bool s_imfInitFailed = false;
 
 static bool imfAvailable()
@@ -602,7 +602,7 @@ QQnxInputContext::~QQnxInputContext()
     qInputContextDebug();
 
     Q_ASSERT(sInputContextInstance == this);
-    sInputContextInstance = 0;
+    sInputContextInstance = nullptr;
 
     if (!imfAvailable())
         return;
@@ -735,7 +735,7 @@ void QQnxInputContext::closeSession()
 
     if (sInputSession) {
         p_ictrl_close_session((input_session_t *)sInputSession);
-        sInputSession = 0;
+        sInputSession = nullptr;
     }
     // These are likely already in the right state but this depends on the text control
     // having called reset or commit.  So, just in case, set them to proper values.

src/plugins/platforms/qnx/qqnxnavigatoreventhandler.h

@@ -48,7 +48,7 @@ class QQnxNavigatorEventHandler : public QObject
 {
     Q_OBJECT
 public:
-    explicit QQnxNavigatorEventHandler(QObject *parent = 0);
+    explicit QQnxNavigatorEventHandler(QObject *parent = nullptr);
 
     bool handleOrientationCheck(int angle);
     void handleOrientationChange(int angle);

src/plugins/platforms/qnx/qqnxnavigatoreventnotifier.h

@@ -51,7 +51,7 @@ class QQnxNavigatorEventNotifier : public QObject
 {
     Q_OBJECT
 public:
-    explicit QQnxNavigatorEventNotifier(QQnxNavigatorEventHandler *eventHandler, QObject *parent = 0);
+    explicit QQnxNavigatorEventNotifier(QQnxNavigatorEventHandler *eventHandler, QObject *parent = nullptr);
     ~QQnxNavigatorEventNotifier();
 
 public Q_SLOTS:

src/plugins/platforms/qnx/qqnxnavigatorpps.h

@@ -50,7 +50,7 @@ class QQnxNavigatorPps : public QQnxAbstractNavigator
 {
     Q_OBJECT
 public:
-    explicit QQnxNavigatorPps(QObject *parent = 0);
+    explicit QQnxNavigatorPps(QObject *parent = nullptr);
     ~QQnxNavigatorPps();
 
 protected:

src/plugins/platforms/qnx/qqnxrasterbackingstore.cpp

@@ -89,7 +89,7 @@ void QQnxRasterBackingStore::flush(QWindow *window, const QRegion &region, const
     if (!m_needsPosting)
         return;
 
-    QQnxWindow *targetWindow = 0;
+    QQnxWindow *targetWindow = nullptr;
     if (window)
         targetWindow = static_cast<QQnxWindow *>(window->handle());
 

src/plugins/platforms/qnx/qqnxwindow.cpp

@@ -566,7 +566,7 @@ void QQnxWindow::removeFromParent()
         if (Q_UNLIKELY(!m_parentWindow->m_childWindows.removeAll(this)))
             qFatal("QQnxWindow: Window Hierarchy broken; window has parent, but parent hasn't got child.");
         else
-            m_parentWindow = 0;
+            m_parentWindow = nullptr;
     } else if (m_screen) {
         m_screen->removeWindow(this);
     }
@@ -634,7 +634,7 @@ void QQnxWindow::lower()
 
 void QQnxWindow::requestActivateWindow()
 {
-    QQnxWindow *focusWindow = 0;
+    QQnxWindow *focusWindow = nullptr;
     if (QGuiApplication::focusWindow())
         focusWindow = static_cast<QQnxWindow*>(QGuiApplication::focusWindow()->handle());
 
@@ -664,7 +664,7 @@ void QQnxWindow::requestActivateWindow()
                   platformScreen->rootWindow()->m_windowGroupName == currentWindow->m_parentGroupName) {
                 currentWindow = platformScreen->rootWindow();
             } else {
-                currentWindow = 0;
+                currentWindow = nullptr;
             }
         }
 

src/plugins/platforms/wasm/qwasmcompositor.cpp

@@ -454,7 +454,7 @@ void QWasmCompositor::drawFrameWindow(QWasmFrameOptions options, QPainter *paint
     const QColor &c2 = options.palette.shadow().color();
     const QColor &c3 = options.palette.midlight().color();
     const QColor &c4 = options.palette.dark().color();
-    const QBrush *fill = 0;
+    const QBrush *fill = nullptr;
 
     const qreal devicePixelRatio = painter->device()->devicePixelRatio();
     if (!qFuzzyCompare(devicePixelRatio, qreal(1))) {

src/plugins/platforms/xcb/nativepainting/qcolormap_x11.cpp

@@ -320,7 +320,7 @@ static void init_direct(QXcbColormapPrivate *d, bool ownColormap)
     XStoreColors(X11->display, d->colormap, colorTable.data(), colorTable.count());
 }
 
-static QXcbColormap **cmaps = 0;
+static QXcbColormap **cmaps = nullptr;
 
 void QXcbColormap::initialize()
 {
@@ -343,7 +343,7 @@ void QXcbColormap::initialize()
         d->visual = DefaultVisual(display, i);
         d->defaultVisual = true;
 
-        Visual *argbVisual = 0;
+        Visual *argbVisual = nullptr;
 
         if (X11->visual && i == DefaultScreen(display)) {
             // only use the outside colormap on the default screen
@@ -356,7 +356,7 @@ void QXcbColormap::initialize()
             d->visual = find_visual(display, i, X11->visual_class, X11->visual_id,
                                     &d->depth, &d->defaultVisual);
         } else if (!X11->custom_cmap) {
-            XStandardColormap *stdcmap = 0;
+            XStandardColormap *stdcmap = nullptr;
             int ncmaps = 0;
 
 #if QT_CONFIG(xrender)

src/plugins/platforms/xcb/nativepainting/qpixmap_x11.cpp

@@ -282,9 +282,9 @@ static uint n_bits(uint v)
     return i;
 }
 
-static uint *red_scale_table   = 0;
-static uint *green_scale_table = 0;
-static uint *blue_scale_table  = 0;
+static uint *red_scale_table   = nullptr;
+static uint *green_scale_table = nullptr;
+static uint *blue_scale_table  = nullptr;
 
 static void cleanup_scale_tables()
 {
@@ -546,10 +546,10 @@ void QX11PlatformPixmap::fromImage(const QImage &img, Qt::ImageConversionFlags f
 
     Display *dpy   = xinfo.display();
     Visual *visual = (Visual *)xinfo.visual();
-    XImage *xi = 0;
+    XImage *xi = nullptr;
     bool    trucol = (visual->c_class >= TrueColor);
     size_t  nbytes = image.sizeInBytes();
-    uchar  *newbits= 0;
+    uchar  *newbits= nullptr;
 
 #if QT_CONFIG(xrender)
     if (alphaCheck.hasXRenderAndAlpha()) {

src/plugins/platforms/xcb/nativepainting/qtessellator.cpp

@@ -725,7 +725,7 @@ void QTessellatorPrivate::cancelCoincidingEdges()
 {
     Vertex **vv = vertices.sorted;
 
-    QCoincidingEdge *tl = 0;
+    QCoincidingEdge *tl = nullptr;
     int tlSize = 0;
 
     for (int i = 0; i < vertices.nPoints - 1; ++i) {

src/plugins/platforms/xcb/qxcbdrag.cpp

@@ -95,9 +95,9 @@ static xcb_window_t xdndProxy(QXcbConnection *c, xcb_window_t w)
     if (reply && reply->type == XCB_ATOM_WINDOW) {
         xcb_window_t p = *((xcb_window_t *)xcb_get_property_value(reply.get()));
         if (proxy != p)
-            proxy = 0;
+            proxy = XCB_NONE;
     } else {
-        proxy = 0;
+        proxy = XCB_NONE;
     }
 
     return proxy;
@@ -690,7 +690,7 @@ int QXcbDrag::findTransactionByTime(xcb_timestamp_t timestamp)
 
 #if 0
 // for embedding only
-static QWidget* current_embedding_widget  = 0;
+static QWidget* current_embedding_widget  = nullptr;
 static xcb_client_message_event_t last_enter_event;
 
 

src/plugins/sqldrivers/db2/qsql_db2.cpp

@@ -1052,7 +1052,7 @@ QVariant QDB2Result::data(int field)
         return *d->valueCache[field];
 
 
-    QVariant* v = 0;
+    QVariant *v = nullptr;
     switch (info.metaType().id()) {
         case QVariant::LongLong:
             v = new QVariant((qint64) qGetBigIntData(d->hStmt, field, isNull));

src/plugins/sqldrivers/db2/qsql_db2_p.h

@@ -72,8 +72,8 @@ class Q_EXPORT_SQLDRIVER_DB2 QDB2Driver : public QSqlDriver
     friend class QDB2ResultPrivate;
 
 public:
-    explicit QDB2Driver(QObject* parent = 0);
-    QDB2Driver(Qt::HANDLE env, Qt::HANDLE con, QObject* parent = 0);
+    explicit QDB2Driver(QObject *parent = nullptr);
+    QDB2Driver(Qt::HANDLE env, Qt::HANDLE con, QObject *parent = nullptr);
     ~QDB2Driver();
     bool hasFeature(DriverFeature) const override;
     void close() override;

src/plugins/sqldrivers/ibase/qsql_ibase.cpp

@@ -487,7 +487,7 @@ QVariant QIBaseResultPrivate::fetchBlob(ISC_QUAD *bId)
 }
 
 template<typename T>
-static QList<QVariant> toList(char** buf, int count, T* = 0)
+static QList<QVariant> toList(char** buf, int count, T* = nullptr)
 {
     QList<QVariant> res;
     for (int i = 0; i < count; ++i) {
@@ -624,7 +624,7 @@ QVariant QIBaseResultPrivate::fetchArray(int pos, ISC_QUAD *arr)
 }
 
 template<typename T>
-static char* fillList(char *buffer, const QList<QVariant> &list, T* = 0)
+static char* fillList(char *buffer, const QList<QVariant> &list, T* = nullptr)
 {
     for (int i = 0; i < list.size(); ++i) {
         T val;