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>

9 files changed, 19 insertions, 19 deletions

diff --git a/src/corelib/kernel/qeventdispatcher_cf_p.h b/src/corelib/kernel/qeventdispatcher_cf_p.h
index eb84b0a64c..2d76bf53da 100644
--- a/src/corelib/kernel/qeventdispatcher_cf_p.h
+++ b/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();
 
diff --git a/src/corelib/kernel/qeventdispatcher_win.cpp b/src/corelib/kernel/qeventdispatcher_win.cpp
index 03d003bb0f..44487d57e2 100644
--- a/src/corelib/kernel/qeventdispatcher_win.cpp
+++ b/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,
diff --git a/src/corelib/kernel/qeventdispatcher_win_p.h b/src/corelib/kernel/qeventdispatcher_win_p.h
index 9ee4eb725d..a5c063e062 100644
--- a/src/corelib/kernel/qeventdispatcher_win_p.h
+++ b/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);
diff --git a/src/corelib/kernel/qjni.cpp b/src/corelib/kernel/qjni.cpp
index 5f652d70e3..b593483e59 100644
--- a/src/corelib/kernel/qjni.cpp
+++ b/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));
diff --git a/src/corelib/kernel/qjni_p.h b/src/corelib/kernel/qjni_p.h
index ec8525e6e1..b5139d404b 100644
--- a/src/corelib/kernel/qjni_p.h
+++ b/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;
diff --git a/src/corelib/kernel/qmetatype.cpp b/src/corelib/kernel/qmetatype.cpp
index b3807b145d..60588e9329 100644
--- a/src/corelib/kernel/qmetatype.cpp
+++ b/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
diff --git a/src/corelib/kernel/qpoll.cpp b/src/corelib/kernel/qpoll.cpp
index 8b87bfe79d..f41c413db6 100644
--- a/src/corelib/kernel/qpoll.cpp
+++ b/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);
diff --git a/src/corelib/kernel/qproperty.h b/src/corelib/kernel/qproperty.h
index 156696dace..ab93cdccc6 100644
--- a/src/corelib/kernel/qproperty.h
+++ b/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
diff --git a/src/corelib/kernel/qsystemerror.cpp b/src/corelib/kernel/qsystemerror.cpp
index a2df9dee93..030c38e045 100644
--- a/src/corelib/kernel/qsystemerror.cpp
+++ b/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,