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>

14 files changed, 28 insertions, 28 deletions

diff --git a/tests/auto/widgets/widgets/qabstractbutton/tst_qabstractbutton.cpp b/tests/auto/widgets/widgets/qabstractbutton/tst_qabstractbutton.cpp
index 3b2bc1d126..26198c9aff 100644
--- a/tests/auto/widgets/widgets/qabstractbutton/tst_qabstractbutton.cpp
+++ b/tests/auto/widgets/widgets/qabstractbutton/tst_qabstractbutton.cpp
@@ -102,7 +102,7 @@ private:
 class MyButton : public QAbstractButton
 {
 public:
-    MyButton(QWidget *p = 0) : QAbstractButton(p) {}
+    MyButton(QWidget *p = nullptr) : QAbstractButton(p) {}
     void paintEvent(QPaintEvent *) override
     {
         QPainter p(this);
diff --git a/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp b/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
index c7d918fa6a..30f51e1d42 100644
--- a/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
+++ b/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
@@ -1822,7 +1822,7 @@ class ReturnClass : public QWidget
 {
     Q_OBJECT
 public:
-    ReturnClass(QWidget *parent = 0)
+    ReturnClass(QWidget *parent = nullptr)
         : QWidget(parent), received(false)
     {
         QComboBox *box = new QComboBox(this);
@@ -2303,7 +2303,7 @@ class task166349_ComboBox : public QComboBox
 {
     Q_OBJECT
 public:
-    task166349_ComboBox(QWidget *parent = 0) : QComboBox(parent)
+    task166349_ComboBox(QWidget *parent = nullptr) : QComboBox(parent)
     {
         QStringList list;
         list << "one" << "two";
diff --git a/tests/auto/widgets/widgets/qdatetimeedit/tst_qdatetimeedit.cpp b/tests/auto/widgets/widgets/qdatetimeedit/tst_qdatetimeedit.cpp
index ef813c3021..e8aafa9c03 100644
--- a/tests/auto/widgets/widgets/qdatetimeedit/tst_qdatetimeedit.cpp
+++ b/tests/auto/widgets/widgets/qdatetimeedit/tst_qdatetimeedit.cpp
@@ -89,7 +89,7 @@ class EditorDateEdit : public QDateTimeEdit
 {
     Q_OBJECT
 public:
-    EditorDateEdit(QWidget *parent = 0) : QDateTimeEdit(parent) {}
+    EditorDateEdit(QWidget *parent = nullptr) : QDateTimeEdit(parent) {}
     QLineEdit *lineEdit() { return QDateTimeEdit::lineEdit(); }
     friend class tst_QDateTimeEdit;
 };
diff --git a/tests/auto/widgets/widgets/qdoublespinbox/tst_qdoublespinbox.cpp b/tests/auto/widgets/widgets/qdoublespinbox/tst_qdoublespinbox.cpp
index 04a68dd80f..66a4dff584 100644
--- a/tests/auto/widgets/widgets/qdoublespinbox/tst_qdoublespinbox.cpp
+++ b/tests/auto/widgets/widgets/qdoublespinbox/tst_qdoublespinbox.cpp
@@ -49,7 +49,7 @@ class DoubleSpinBox : public QDoubleSpinBox
 {
     Q_OBJECT
 public:
-    DoubleSpinBox(QWidget *parent = 0)
+    DoubleSpinBox(QWidget *parent = nullptr)
         : QDoubleSpinBox(parent)
     { /*connect(this, SIGNAL(valueChanged(double)), this, SLOT(foo(double)));*/ }
     QString textFromValue(double v) const override
@@ -1081,7 +1081,7 @@ void tst_QDoubleSpinBox::undoRedo()
 
 struct task199226_DoubleSpinBox : public QDoubleSpinBox
 {
-    task199226_DoubleSpinBox(QWidget *parent = 0) : QDoubleSpinBox(parent) {}
+    task199226_DoubleSpinBox(QWidget *parent = nullptr) : QDoubleSpinBox(parent) {}
     QLineEdit *lineEdit() { return QAbstractSpinBox::lineEdit(); }
 };
 
diff --git a/tests/auto/widgets/widgets/qlineedit/tst_qlineedit.cpp b/tests/auto/widgets/widgets/qlineedit/tst_qlineedit.cpp
index 9851e9edbd..e4bf36efaa 100644
--- a/tests/auto/widgets/widgets/qlineedit/tst_qlineedit.cpp
+++ b/tests/auto/widgets/widgets/qlineedit/tst_qlineedit.cpp
@@ -904,7 +904,7 @@ static const int chars = 8;
 class ValidatorWithFixup : public QValidator
 {
 public:
-    ValidatorWithFixup(QWidget *parent = 0)
+    ValidatorWithFixup(QWidget *parent = nullptr)
         : QValidator(parent)
     {}
 
@@ -3151,7 +3151,7 @@ void tst_QLineEdit::cutWithoutSelection()
 class InputMaskValidator : public QValidator
 {
 public:
-    InputMaskValidator(QObject *parent, const char *name = 0) : QValidator(parent) { setObjectName(name); }
+    InputMaskValidator(QObject *parent, const char *name = nullptr) : QValidator(parent) { setObjectName(name); }
     State validate(QString &text, int &pos) const override
     {
         InputMaskValidator *that = (InputMaskValidator *)this;
@@ -3671,7 +3671,7 @@ void tst_QLineEdit::cursor()
 class task180999_Widget : public QWidget
 {
 public:
-    task180999_Widget(QWidget *parent = 0) : QWidget(parent)
+    task180999_Widget(QWidget *parent = nullptr) : QWidget(parent)
     {
         QHBoxLayout *layout  = new QHBoxLayout(this);
         lineEdit1.setText("some text 1 ...");
@@ -3776,7 +3776,7 @@ class task198789_Widget : public QWidget
 {
     Q_OBJECT
 public:
-    task198789_Widget(QWidget *parent = 0) : QWidget(parent)
+    task198789_Widget(QWidget *parent = nullptr) : QWidget(parent)
     {
         QStringList wordList;
         wordList << "alpha" << "omega" << "omicron" << "zeta";
diff --git a/tests/auto/widgets/widgets/qmainwindow/tst_qmainwindow.cpp b/tests/auto/widgets/widgets/qmainwindow/tst_qmainwindow.cpp
index b0fc8a3bfa..75721bf7a7 100644
--- a/tests/auto/widgets/widgets/qmainwindow/tst_qmainwindow.cpp
+++ b/tests/auto/widgets/widgets/qmainwindow/tst_qmainwindow.cpp
@@ -1456,7 +1456,7 @@ void tst_QMainWindow::createPopupMenu()
 class MyDockWidget : public QDockWidget
 {
 public:
-    MyDockWidget(QWidget * = 0) {
+    MyDockWidget(QWidget * = nullptr) {
         create(); // otherwise hide() doesn't result in a hide event
     }
 };
@@ -1464,7 +1464,7 @@ public:
 class MyWidget : public QWidget
 {
 public:
-    MyWidget(QWidget *parent = 0) : QWidget(parent)
+    MyWidget(QWidget *parent = nullptr) : QWidget(parent)
     {
     }
 
@@ -1522,10 +1522,10 @@ void AddDockWidget::apply(QMainWindow *mw) const
     dw->setObjectName(name);
     dw->setWindowTitle(name);
 
-    QDockWidget *other = 0;
+    QDockWidget *other = nullptr;
     if (mode == SplitMode || mode == TabMode) {
         other = mw->findChild<QDockWidget*>(this->other);
-        QVERIFY(other != 0);
+        QVERIFY(other != nullptr);
     }
 
     switch (mode) {
diff --git a/tests/auto/widgets/widgets/qmdiarea/tst_qmdiarea.cpp b/tests/auto/widgets/widgets/qmdiarea/tst_qmdiarea.cpp
index 53dbf2012f..12593298e8 100644
--- a/tests/auto/widgets/widgets/qmdiarea/tst_qmdiarea.cpp
+++ b/tests/auto/widgets/widgets/qmdiarea/tst_qmdiarea.cpp
@@ -791,7 +791,7 @@ void tst_QMdiArea::changeModified()
 class MyChild : public QWidget
 {
 public:
-    MyChild(QWidget *parent = 0) : QWidget(parent) {}
+    MyChild(QWidget *parent = nullptr) : QWidget(parent) {}
     QSize sizeHint() const override { return QSize(234, 123); }
 };
 
@@ -865,7 +865,7 @@ void tst_QMdiArea::fixedSize()
 class LargeWidget : public QWidget
 {
 public:
-    LargeWidget(QWidget *parent = 0) : QWidget(parent) {}
+    LargeWidget(QWidget *parent = nullptr) : QWidget(parent) {}
     QSize sizeHint() const override { return QSize(1280, 1024); }
     QSize minimumSizeHint() const override { return QSize(300, 300); }
 };
diff --git a/tests/auto/widgets/widgets/qmenu/tst_qmenu.cpp b/tests/auto/widgets/widgets/qmenu/tst_qmenu.cpp
index 9a6cf3bfcf..e0f3381b8d 100644
--- a/tests/auto/widgets/widgets/qmenu/tst_qmenu.cpp
+++ b/tests/auto/widgets/widgets/qmenu/tst_qmenu.cpp
@@ -534,7 +534,7 @@ void tst_QMenu::statusTip()
     QRect rect1 = tb.actionGeometry(&a);
     QToolButton *btn = qobject_cast<QToolButton*>(tb.childAt(rect1.center()));
 
-    QVERIFY(btn != NULL);
+    QVERIFY(btn != nullptr);
 
     //because showMenu calls QMenu::exec, we need to use a singleshot
     //to continue the test
@@ -1035,7 +1035,7 @@ void tst_QMenu::deleteActionInTriggered()
 class PopulateOnAboutToShowTestMenu : public QMenu {
     Q_OBJECT
 public:
-    explicit PopulateOnAboutToShowTestMenu(QWidget *parent = 0);
+    explicit PopulateOnAboutToShowTestMenu(QWidget *parent = nullptr);
 
 public slots:
     void populateMenu();
diff --git a/tests/auto/widgets/widgets/qscrollarea/tst_qscrollarea.cpp b/tests/auto/widgets/widgets/qscrollarea/tst_qscrollarea.cpp
index c14b3aa9d8..668d301205 100644
--- a/tests/auto/widgets/widgets/qscrollarea/tst_qscrollarea.cpp
+++ b/tests/auto/widgets/widgets/qscrollarea/tst_qscrollarea.cpp
@@ -80,7 +80,7 @@ void tst_QScrollArea::getSetCheck()
 class WidgetWithMicroFocus : public QWidget
 {
 public:
-    WidgetWithMicroFocus(QWidget *parent = 0) : QWidget(parent)
+    WidgetWithMicroFocus(QWidget *parent = nullptr) : QWidget(parent)
     {
         setBackgroundRole(QPalette::Dark);
     }
diff --git a/tests/auto/widgets/widgets/qscrollbar/tst_qscrollbar.cpp b/tests/auto/widgets/widgets/qscrollbar/tst_qscrollbar.cpp
index 92771db764..a40ce538b2 100644
--- a/tests/auto/widgets/widgets/qscrollbar/tst_qscrollbar.cpp
+++ b/tests/auto/widgets/widgets/qscrollbar/tst_qscrollbar.cpp
@@ -52,7 +52,7 @@ private slots:
 class SingleStepTestScrollBar : public QScrollBar {
     Q_OBJECT
 public:
-    explicit SingleStepTestScrollBar(Qt::Orientation o, QWidget *parent = 0) : QScrollBar(o, parent) {}
+    explicit SingleStepTestScrollBar(Qt::Orientation o, QWidget *parent = nullptr) : QScrollBar(o, parent) {}
 
 public slots:
     void hideAndShow()
@@ -99,7 +99,7 @@ void tst_QScrollBar::task_209492()
     {
     public:
         int scrollCount;
-        MyScrollArea(QWidget *parent = 0) : QScrollArea(parent), scrollCount(0) {}
+        MyScrollArea(QWidget *parent = nullptr) : QScrollArea(parent), scrollCount(0) {}
     protected:
         void paintEvent(QPaintEvent *) override { QTest::qSleep(600); }
         void scrollContentsBy(int, int) override { ++scrollCount; viewport()->update(); }
diff --git a/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp b/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp
index 35f796a37f..832635cc32 100644
--- a/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp
+++ b/tests/auto/widgets/widgets/qspinbox/tst_qspinbox.cpp
@@ -61,7 +61,7 @@
 class SpinBox : public QSpinBox
 {
 public:
-    SpinBox(QWidget *parent = 0)
+    SpinBox(QWidget *parent = nullptr)
         : QSpinBox(parent)
     {}
     QString textFromValue(int v) const override
@@ -508,7 +508,7 @@ void tst_QSpinBox::valueChangedHelper(int value)
 class ReadOnlyChangeTracker: public QSpinBox
 {
 public:
-    ReadOnlyChangeTracker(QWidget *parent = 0) : QSpinBox(parent) {}
+    ReadOnlyChangeTracker(QWidget *parent = nullptr) : QSpinBox(parent) {}
 
     void changeEvent(QEvent *ev) override
     {
diff --git a/tests/auto/widgets/widgets/qsplitter/tst_qsplitter.cpp b/tests/auto/widgets/widgets/qsplitter/tst_qsplitter.cpp
index b63e917e5c..36cb15fa1f 100644
--- a/tests/auto/widgets/widgets/qsplitter/tst_qsplitter.cpp
+++ b/tests/auto/widgets/widgets/qsplitter/tst_qsplitter.cpp
@@ -147,7 +147,7 @@ void tst_QSplitter::init()
 void tst_QSplitter::removeThirdWidget()
 {
     delete w3;
-    w3 = 0;
+    w3 = nullptr;
     int handleWidth = splitter->style()->pixelMetric(QStyle::PM_SplitterWidth);
     splitter->setFixedSize(400 + handleWidth, 400);
 }
@@ -302,7 +302,7 @@ class TestSplitterStyle : public QProxyStyle
 {
 public:
     TestSplitterStyle() : handleWidth(5) {}
-    int pixelMetric(PixelMetric metric, const QStyleOption *option = 0, const QWidget *widget = 0) const override
+    int pixelMetric(PixelMetric metric, const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const override
     {
         if (metric == QStyle::PM_SplitterWidth)
             return handleWidth;
@@ -652,7 +652,7 @@ void tst_QSplitter::testRemoval()
 class MyFriendlySplitter : public QSplitter
 {
 public:
-    MyFriendlySplitter(QWidget *parent = 0) : QSplitter(parent) {}
+    MyFriendlySplitter(QWidget *parent = nullptr) : QSplitter(parent) {}
     void setRubberBand(int pos) { QSplitter::setRubberBand(pos); }
 
     void moveSplitter(int pos, int index) { QSplitter::moveSplitter(pos, index); }
diff --git a/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp b/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp
index 2afbd44c03..c8e399f0f8 100644
--- a/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp
+++ b/tests/auto/widgets/widgets/qtabbar/tst_qtabbar.cpp
@@ -671,7 +671,7 @@ class TitleChangeTabBar : public QTabBar
     int count;
 
 public:
-    TitleChangeTabBar(QWidget * parent = 0) : QTabBar(parent), count(0)
+    TitleChangeTabBar(QWidget * parent = nullptr) : QTabBar(parent), count(0)
     {
         setMovable(true);
         addTab("0");
diff --git a/tests/auto/widgets/widgets/qtextedit/tst_qtextedit.cpp b/tests/auto/widgets/widgets/qtextedit/tst_qtextedit.cpp
index 4054e35e8d..a90ae9a55b 100644
--- a/tests/auto/widgets/widgets/qtextedit/tst_qtextedit.cpp
+++ b/tests/auto/widgets/widgets/qtextedit/tst_qtextedit.cpp
@@ -2642,7 +2642,7 @@ void tst_QTextEdit::findWithRegularExpressionReturnsFalseIfNoMoreResults()
 class TextEdit : public QTextEdit
 {
 public:
-    TextEdit(QWidget *parent = 0)
+    TextEdit(QWidget *parent = nullptr)
         : QTextEdit(parent)
     {}
     void wheelEvent(QWheelEvent *event) override