From 564b59d903683b14c75b72a3e93367717f201def Mon Sep 17 00:00:00 2001
From: Allan Sandfeld Jensen <allan.jensen@qt.io>
Date: Wed, 7 Oct 2020 13:05:48 +0200
Subject: 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>
---
 tests/manual/cocoa/appicon/main.cpp                               | 2 +-
 tests/manual/cocoa/menurama/mainwindow.h                          | 2 +-
 tests/manual/cocoa/qt_on_cocoa/rasterwindow.h                     | 2 +-
 tests/manual/cocoa/wheelevent/window.h                            | 2 +-
 tests/manual/dialogs/colordialogpanel.cpp                         | 2 +-
 tests/manual/dialogs/colordialogpanel.h                           | 2 +-
 tests/manual/dialogs/filedialogpanel.cpp                          | 2 +-
 tests/manual/dialogs/filedialogpanel.h                            | 2 +-
 tests/manual/dialogs/fontdialogpanel.h                            | 2 +-
 tests/manual/dialogs/main.cpp                                     | 4 ++--
 tests/manual/dialogs/messageboxpanel.h                            | 2 +-
 tests/manual/dialogs/printdialogpanel.cpp                         | 2 +-
 tests/manual/dialogs/printdialogpanel.h                           | 2 +-
 tests/manual/dialogs/wizardpanel.cpp                              | 8 ++++----
 tests/manual/dialogs/wizardpanel.h                                | 2 +-
 tests/manual/gestures/graphicsview/gestures.h                     | 2 +-
 tests/manual/gestures/graphicsview/main.cpp                       | 8 ++++----
 tests/manual/gestures/scrollarea/main.cpp                         | 4 ++--
 tests/manual/inputmethodhints/inputmethodhints.h                  | 2 +-
 tests/manual/keypadnavigation/main.cpp                            | 2 +-
 tests/manual/network_stresstest/minihttpserver.h                  | 2 +-
 tests/manual/qcursor/allcursors/mainwindow.h                      | 2 +-
 tests/manual/qcursor/grab_override/mainwindow.h                   | 2 +-
 tests/manual/qgraphicsitem/main.cpp                               | 2 +-
 tests/manual/qgraphicsitemgroup/widget.h                          | 2 +-
 tests/manual/qlayout/gridwidget.h                                 | 2 +-
 tests/manual/qlayout/hbwidget.h                                   | 2 +-
 tests/manual/qlayout/mainwindow.h                                 | 2 +-
 tests/manual/qlayout/vbwidget.h                                   | 2 +-
 tests/manual/qopenglwidget/openglwidget/openglwidget.h            | 2 +-
 tests/manual/qscreen/propertyfield.h                              | 2 +-
 tests/manual/qtabbar/tabbarform.h                                 | 2 +-
 tests/manual/qtbug-8933/widget.h                                  | 2 +-
 tests/manual/qtexteditlist/widget.h                               | 2 +-
 tests/manual/qtouchevent/main.cpp                                 | 2 +-
 tests/manual/qtouchevent/touchwidget.h                            | 2 +-
 tests/manual/repaint/shared/shared.h                              | 2 +-
 tests/manual/repaint/tableview/main.cpp                           | 2 +-
 tests/manual/textrendering/textperformance/main.cpp               | 2 +-
 tests/manual/transientwindow/mainwindow.h                         | 2 +-
 tests/manual/widgetgrab/main.cpp                                  | 2 +-
 tests/manual/widgets/itemviews/delegate/example.cpp               | 2 +-
 tests/manual/widgets/itemviews/qheaderview/qheaderviewtest1.cpp   | 2 +-
 tests/manual/widgets/widgets/bigmenucreator/mainwindow.h          | 2 +-
 tests/manual/widgets/widgets/defaultUpMenuBar/main.cpp            | 2 +-
 tests/manual/widgets/widgets/multiscreen-menus/mainwindow.h       | 2 +-
 .../widgets/widgets/qtoolbutton/menuOnMultiScreens/main.cpp       | 2 +-
 tests/manual/windowchildgeometry/controllerwidget.cpp             | 2 +-
 tests/manual/windowchildgeometry/controllerwidget.h               | 2 +-
 tests/manual/windowflags/controllerwindow.cpp                     | 2 +-
 tests/manual/windowflags/controllerwindow.h                       | 4 ++--
 tests/manual/windowflags/previewwindow.h                          | 4 ++--
 tests/manual/windowgeometry/controllerwidget.cpp                  | 2 +-
 tests/manual/windowgeometry/controllerwidget.h                    | 2 +-
 tests/manual/windowmodality/main.cpp                              | 8 ++++----
 tests/manual/xembed-raster/rasterwindow.h                         | 2 +-
 56 files changed, 69 insertions(+), 69 deletions(-)

(limited to 'tests/manual')

diff --git a/tests/manual/cocoa/appicon/main.cpp b/tests/manual/cocoa/appicon/main.cpp
index e22d70988d..ba398703b7 100644
--- a/tests/manual/cocoa/appicon/main.cpp
+++ b/tests/manual/cocoa/appicon/main.cpp
@@ -34,7 +34,7 @@ class TopWidget : public QWidget
 {
     Q_OBJECT
 public:
-    TopWidget(QWidget *parent = 0) : QWidget(parent)
+    TopWidget(QWidget *parent = nullptr) : QWidget(parent)
     {
         QVBoxLayout *layout = new QVBoxLayout;
         QPushButton *button = new QPushButton("Change app icon");
diff --git a/tests/manual/cocoa/menurama/mainwindow.h b/tests/manual/cocoa/menurama/mainwindow.h
index 3ca90dad8f..e2af43e04e 100644
--- a/tests/manual/cocoa/menurama/mainwindow.h
+++ b/tests/manual/cocoa/menurama/mainwindow.h
@@ -40,7 +40,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    explicit MainWindow(QWidget *parent = 0);
+    explicit MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
 
 protected:
diff --git a/tests/manual/cocoa/qt_on_cocoa/rasterwindow.h b/tests/manual/cocoa/qt_on_cocoa/rasterwindow.h
index 5262300b12..b8ef674994 100644
--- a/tests/manual/cocoa/qt_on_cocoa/rasterwindow.h
+++ b/tests/manual/cocoa/qt_on_cocoa/rasterwindow.h
@@ -32,7 +32,7 @@
 class RasterWindow : public QRasterWindow
 {
 public:
-    RasterWindow(QRasterWindow *parent = 0);
+    RasterWindow(QRasterWindow *parent = nullptr);
 
 protected:
     void mousePressEvent(QMouseEvent *);
diff --git a/tests/manual/cocoa/wheelevent/window.h b/tests/manual/cocoa/wheelevent/window.h
index 122b40de69..42a6b4a1aa 100644
--- a/tests/manual/cocoa/wheelevent/window.h
+++ b/tests/manual/cocoa/wheelevent/window.h
@@ -32,7 +32,7 @@
 class Window : public QWindow
 {
 public:
-    Window(QWindow *parent = 0);
+    Window(QWindow *parent = nullptr);
     Window(QScreen *screen);
 
 protected:
diff --git a/tests/manual/dialogs/colordialogpanel.cpp b/tests/manual/dialogs/colordialogpanel.cpp
index e2e0fbcdee..f47e4ea8f1 100644
--- a/tests/manual/dialogs/colordialogpanel.cpp
+++ b/tests/manual/dialogs/colordialogpanel.cpp
@@ -81,7 +81,7 @@ static inline QPushButton *addButton(const QString &description, QVBoxLayout *la
 class ColorProxyModel : public QSortFilterProxyModel
 {
 public:
-    ColorProxyModel(QObject *parent = 0) : QSortFilterProxyModel(parent)
+    ColorProxyModel(QObject *parent = nullptr) : QSortFilterProxyModel(parent)
     {
     }
 
diff --git a/tests/manual/dialogs/colordialogpanel.h b/tests/manual/dialogs/colordialogpanel.h
index 988518a1c8..a299337f43 100644
--- a/tests/manual/dialogs/colordialogpanel.h
+++ b/tests/manual/dialogs/colordialogpanel.h
@@ -42,7 +42,7 @@ class ColorDialogPanel : public QWidget
 {
     Q_OBJECT
 public:
-    explicit ColorDialogPanel(QWidget *parent = 0);
+    explicit ColorDialogPanel(QWidget *parent = nullptr);
 
 public slots:
     void execModal();
diff --git a/tests/manual/dialogs/filedialogpanel.cpp b/tests/manual/dialogs/filedialogpanel.cpp
index 56a1502313..9f2ae559d7 100644
--- a/tests/manual/dialogs/filedialogpanel.cpp
+++ b/tests/manual/dialogs/filedialogpanel.cpp
@@ -84,7 +84,7 @@ class LabelLineEdit : public QLineEdit
 {
     Q_OBJECT
 public:
-    explicit LabelLineEdit(QFileDialog::DialogLabel label, QWidget *parent = 0) : QLineEdit(parent), m_label(label), m_dirty(false)
+    explicit LabelLineEdit(QFileDialog::DialogLabel label, QWidget *parent = nullptr) : QLineEdit(parent), m_label(label), m_dirty(false)
     {
         connect(this, SIGNAL(textEdited(QString)), this, SLOT(setDirty()));
     }
diff --git a/tests/manual/dialogs/filedialogpanel.h b/tests/manual/dialogs/filedialogpanel.h
index 0bad3e7456..28dded3891 100644
--- a/tests/manual/dialogs/filedialogpanel.h
+++ b/tests/manual/dialogs/filedialogpanel.h
@@ -47,7 +47,7 @@ class FileDialogPanel : public QWidget
 {
     Q_OBJECT
 public:
-    explicit FileDialogPanel(QWidget *parent = 0);
+    explicit FileDialogPanel(QWidget *parent = nullptr);
 
 public slots:
     void execModal();
diff --git a/tests/manual/dialogs/fontdialogpanel.h b/tests/manual/dialogs/fontdialogpanel.h
index dd7fb1413a..2bcd68c74c 100644
--- a/tests/manual/dialogs/fontdialogpanel.h
+++ b/tests/manual/dialogs/fontdialogpanel.h
@@ -43,7 +43,7 @@ class FontDialogPanel : public QWidget
 {
     Q_OBJECT
 public:
-    explicit FontDialogPanel(QWidget *parent = 0);
+    explicit FontDialogPanel(QWidget *parent = nullptr);
 
 public slots:
     void execModal();
diff --git a/tests/manual/dialogs/main.cpp b/tests/manual/dialogs/main.cpp
index 2676ceeb52..da9daab942 100644
--- a/tests/manual/dialogs/main.cpp
+++ b/tests/manual/dialogs/main.cpp
@@ -52,7 +52,7 @@ static bool optNoPrinter = false;
 class AboutDialog : public QDialog
 {
 public:
-    explicit AboutDialog(QWidget *parent = 0);
+    explicit AboutDialog(QWidget *parent = nullptr);
 };
 
 AboutDialog::AboutDialog(QWidget *parent) : QDialog(parent)
@@ -79,7 +79,7 @@ AboutDialog::AboutDialog(QWidget *parent) : QDialog(parent)
 class MainWindow : public QMainWindow {
     Q_OBJECT
 public:
-    explicit MainWindow(QWidget *parent = 0);
+    explicit MainWindow(QWidget *parent = nullptr);
 
 public slots:
     void aboutDialog();
diff --git a/tests/manual/dialogs/messageboxpanel.h b/tests/manual/dialogs/messageboxpanel.h
index 1e37b5c6df..d5ca6057d1 100644
--- a/tests/manual/dialogs/messageboxpanel.h
+++ b/tests/manual/dialogs/messageboxpanel.h
@@ -47,7 +47,7 @@ class MessageBoxPanel : public QWidget
 {
     Q_OBJECT
 public:
-    explicit MessageBoxPanel(QWidget *parent = 0);
+    explicit MessageBoxPanel(QWidget *parent = nullptr);
     ~MessageBoxPanel();
 
 public slots:
diff --git a/tests/manual/dialogs/printdialogpanel.cpp b/tests/manual/dialogs/printdialogpanel.cpp
index 338064e9be..d36715e9dd 100644
--- a/tests/manual/dialogs/printdialogpanel.cpp
+++ b/tests/manual/dialogs/printdialogpanel.cpp
@@ -291,7 +291,7 @@ static bool print(QPrinter *printer, QWidget *dialogParent)
 class PrintPreviewDialog : public QPrintPreviewDialog {
     Q_OBJECT
 public:
-    explicit PrintPreviewDialog(QPrinter *printer, QWidget *parent = 0) : QPrintPreviewDialog(printer, parent)
+    explicit PrintPreviewDialog(QPrinter *printer, QWidget *parent = nullptr) : QPrintPreviewDialog(printer, parent)
     {
         connect(this, SIGNAL(paintRequested(QPrinter*)), this, SLOT(slotPaintRequested(QPrinter*)));
     }
diff --git a/tests/manual/dialogs/printdialogpanel.h b/tests/manual/dialogs/printdialogpanel.h
index 6bf465f527..618e34d596 100644
--- a/tests/manual/dialogs/printdialogpanel.h
+++ b/tests/manual/dialogs/printdialogpanel.h
@@ -79,7 +79,7 @@ class PrintDialogPanel  : public QWidget
 {
     Q_OBJECT
 public:
-    explicit PrintDialogPanel(QWidget *parent = 0);
+    explicit PrintDialogPanel(QWidget *parent = nullptr);
     ~PrintDialogPanel();
 
 private slots:
diff --git a/tests/manual/dialogs/wizardpanel.cpp b/tests/manual/dialogs/wizardpanel.cpp
index e5624e6248..4edb10afb8 100644
--- a/tests/manual/dialogs/wizardpanel.cpp
+++ b/tests/manual/dialogs/wizardpanel.cpp
@@ -73,7 +73,7 @@ class WizardStyleControl : public QGroupBox
 {
     Q_OBJECT
 public:
-    WizardStyleControl(QWidget *parent = 0);
+    WizardStyleControl(QWidget *parent = nullptr);
 
     void setWizardStyle(int style);
     QWizard::WizardStyle wizardStyle() const;
@@ -132,7 +132,7 @@ void WizardStyleControl::setWizardStyle(int wizardStyle)
 class WizardOptionsControl : public QGroupBox
 {
 public:
-    explicit WizardOptionsControl(QWidget *parent = 0);
+    explicit WizardOptionsControl(QWidget *parent = nullptr);
 
     QWizard::WizardOption wizardOptions() const;
     void setWizardOptions(int options);
@@ -214,7 +214,7 @@ void Wizard::changeWizardStyle(int newStyle)
 class WizardPage : public QWizardPage
 {
 public:
-    explicit WizardPage(const QString &title, QWidget *parent = 0);
+    explicit WizardPage(const QString &title, QWidget *parent = nullptr);
 
     void initializePage();
 
@@ -257,7 +257,7 @@ Wizard::Wizard(QWidget *parent, Qt::WindowFlags flags)
 // A dialog using a Wizard as child widget (emulating Qt Designer).
 class WizardEmbeddingDialog : public QDialog {
 public:
-    explicit WizardEmbeddingDialog(QWidget *parent = 0);
+    explicit WizardEmbeddingDialog(QWidget *parent = nullptr);
 
     Wizard *wizard() const { return m_wizard; }
 
diff --git a/tests/manual/dialogs/wizardpanel.h b/tests/manual/dialogs/wizardpanel.h
index 0a937f7d31..8d9ee79274 100644
--- a/tests/manual/dialogs/wizardpanel.h
+++ b/tests/manual/dialogs/wizardpanel.h
@@ -41,7 +41,7 @@ class WizardPanel : public QWidget
 {
     Q_OBJECT
 public:
-    explicit WizardPanel(QWidget *parent = 0);
+    explicit WizardPanel(QWidget *parent = nullptr);
 
 public slots:
     void showModal();
diff --git a/tests/manual/gestures/graphicsview/gestures.h b/tests/manual/gestures/graphicsview/gestures.h
index 4cfabc35df..20a850e67e 100644
--- a/tests/manual/gestures/graphicsview/gestures.h
+++ b/tests/manual/gestures/graphicsview/gestures.h
@@ -38,7 +38,7 @@ class ThreeFingerSlideGesture : public QGesture
 public:
     static Qt::GestureType Type;
 
-    ThreeFingerSlideGesture(QObject *parent = 0) : QGesture(parent) { }
+    ThreeFingerSlideGesture(QObject *parent = nullptr) : QGesture(parent) { }
 
     bool gestureFired;
 };
diff --git a/tests/manual/gestures/graphicsview/main.cpp b/tests/manual/gestures/graphicsview/main.cpp
index f08b2c3549..b05d104d99 100644
--- a/tests/manual/gestures/graphicsview/main.cpp
+++ b/tests/manual/gestures/graphicsview/main.cpp
@@ -44,7 +44,7 @@
 class GraphicsView : public QGraphicsView
 {
 public:
-    GraphicsView(QGraphicsScene *scene, QWidget *parent = 0)
+    GraphicsView(QGraphicsScene *scene, QWidget *parent = nullptr)
         : QGraphicsView(scene, parent)
     {
     }
@@ -78,7 +78,7 @@ protected:
 class StandardGestures : public QWidget
 {
 public:
-    StandardGestures(QWidget *parent = 0)
+    StandardGestures(QWidget *parent = nullptr)
             : QWidget(parent)
     {
         scene = new QGraphicsScene(this);
@@ -96,7 +96,7 @@ class GlobalViewGestures : public QWidget
 {
     Q_OBJECT
 public:
-    GlobalViewGestures(QWidget *parent = 0)
+    GlobalViewGestures(QWidget *parent = nullptr)
             : QWidget(parent)
     {
         scene = new QGraphicsScene(this);
@@ -116,7 +116,7 @@ class GraphicsItemGestures : public QWidget
 {
     Q_OBJECT
 public:
-    GraphicsItemGestures(QWidget *parent = 0)
+    GraphicsItemGestures(QWidget *parent = nullptr)
             : QWidget(parent)
     {
         scene = new QGraphicsScene(this);
diff --git a/tests/manual/gestures/scrollarea/main.cpp b/tests/manual/gestures/scrollarea/main.cpp
index 517054eeb9..5378f48de9 100644
--- a/tests/manual/gestures/scrollarea/main.cpp
+++ b/tests/manual/gestures/scrollarea/main.cpp
@@ -44,7 +44,7 @@ class ScrollArea : public QScrollArea
 {
     Q_OBJECT
 public:
-    ScrollArea(QWidget *parent = 0)
+    ScrollArea(QWidget *parent = nullptr)
         : QScrollArea(parent), outside(false)
     {
         viewport()->grabGesture(Qt::PanGesture, Qt::ReceivePartialGestures);
@@ -112,7 +112,7 @@ private:
 class Slider : public QSlider
 {
 public:
-    Slider(Qt::Orientation orientation, QWidget *parent = 0)
+    Slider(Qt::Orientation orientation, QWidget *parent = nullptr)
         : QSlider(orientation, parent)
     {
         grabGesture(Qt::PanGesture);
diff --git a/tests/manual/inputmethodhints/inputmethodhints.h b/tests/manual/inputmethodhints/inputmethodhints.h
index e128c5271e..ca8025e3ec 100644
--- a/tests/manual/inputmethodhints/inputmethodhints.h
+++ b/tests/manual/inputmethodhints/inputmethodhints.h
@@ -37,7 +37,7 @@ class inputmethodhints : public QMainWindow
     Q_OBJECT
 
 public:
-    inputmethodhints(QWidget *parent = 0);
+    inputmethodhints(QWidget *parent = nullptr);
     ~inputmethodhints();
 
 public slots:
diff --git a/tests/manual/keypadnavigation/main.cpp b/tests/manual/keypadnavigation/main.cpp
index dad4376514..52d0dacd07 100644
--- a/tests/manual/keypadnavigation/main.cpp
+++ b/tests/manual/keypadnavigation/main.cpp
@@ -40,7 +40,7 @@ class KeypadNavigation : public QMainWindow
     Q_OBJECT
 
 public:
-    KeypadNavigation(QWidget *parent = 0)
+    KeypadNavigation(QWidget *parent = nullptr)
         : QMainWindow(parent)
         , ui(new Ui_KeypadNavigation)
     {
diff --git a/tests/manual/network_stresstest/minihttpserver.h b/tests/manual/network_stresstest/minihttpserver.h
index fcce9cd480..e17f1266a4 100644
--- a/tests/manual/network_stresstest/minihttpserver.h
+++ b/tests/manual/network_stresstest/minihttpserver.h
@@ -43,7 +43,7 @@ class MiniHttpServer : public QThread
 {
     Q_OBJECT
 public:
-    explicit MiniHttpServer(QObject *parent = 0);
+    explicit MiniHttpServer(QObject *parent = nullptr);
     ~MiniHttpServer();
 
     int port() { return portnum; }
diff --git a/tests/manual/qcursor/allcursors/mainwindow.h b/tests/manual/qcursor/allcursors/mainwindow.h
index 9ae6f0483e..73a023afbb 100644
--- a/tests/manual/qcursor/allcursors/mainwindow.h
+++ b/tests/manual/qcursor/allcursors/mainwindow.h
@@ -43,7 +43,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
 
 private:
diff --git a/tests/manual/qcursor/grab_override/mainwindow.h b/tests/manual/qcursor/grab_override/mainwindow.h
index ce753fa114..5275d80184 100644
--- a/tests/manual/qcursor/grab_override/mainwindow.h
+++ b/tests/manual/qcursor/grab_override/mainwindow.h
@@ -43,7 +43,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
 
 private slots:
diff --git a/tests/manual/qgraphicsitem/main.cpp b/tests/manual/qgraphicsitem/main.cpp
index 284a4c877c..d32c3c6dec 100644
--- a/tests/manual/qgraphicsitem/main.cpp
+++ b/tests/manual/qgraphicsitem/main.cpp
@@ -35,7 +35,7 @@
 class MyObject : public QObject
 {
 public:
-    MyObject(QGraphicsItem *i, QObject *parent = 0) : QObject(parent), itemToToggle(i)
+    MyObject(QGraphicsItem *i, QObject *parent = nullptr) : QObject(parent), itemToToggle(i)
     {
         startTimer(500);
     }
diff --git a/tests/manual/qgraphicsitemgroup/widget.h b/tests/manual/qgraphicsitemgroup/widget.h
index 0da34babdd..d778adb068 100644
--- a/tests/manual/qgraphicsitemgroup/widget.h
+++ b/tests/manual/qgraphicsitemgroup/widget.h
@@ -46,7 +46,7 @@ class Widget : public QWidget
 {
     Q_OBJECT
 public:
-    Widget(QWidget *parent = 0);
+    Widget(QWidget *parent = nullptr);
     ~Widget();
 
 protected Q_SLOTS:
diff --git a/tests/manual/qlayout/gridwidget.h b/tests/manual/qlayout/gridwidget.h
index a3792b03c4..2d1800d64d 100644
--- a/tests/manual/qlayout/gridwidget.h
+++ b/tests/manual/qlayout/gridwidget.h
@@ -35,7 +35,7 @@ class GridWidget : public QWidget
 {
     Q_OBJECT
 public:
-    explicit GridWidget(QWidget *parent = 0);
+    explicit GridWidget(QWidget *parent = nullptr);
 
 signals:
 
diff --git a/tests/manual/qlayout/hbwidget.h b/tests/manual/qlayout/hbwidget.h
index 03642db395..4f106a9ce3 100644
--- a/tests/manual/qlayout/hbwidget.h
+++ b/tests/manual/qlayout/hbwidget.h
@@ -35,7 +35,7 @@ class HbWidget : public QWidget
 {
     Q_OBJECT
 public:
-    explicit HbWidget(QWidget *parent = 0);
+    explicit HbWidget(QWidget *parent = nullptr);
 
 signals:
 
diff --git a/tests/manual/qlayout/mainwindow.h b/tests/manual/qlayout/mainwindow.h
index fdeb80f150..1f19047b74 100644
--- a/tests/manual/qlayout/mainwindow.h
+++ b/tests/manual/qlayout/mainwindow.h
@@ -38,7 +38,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
 
 private slots:
diff --git a/tests/manual/qlayout/vbwidget.h b/tests/manual/qlayout/vbwidget.h
index b722f9f95a..b5f2073faf 100644
--- a/tests/manual/qlayout/vbwidget.h
+++ b/tests/manual/qlayout/vbwidget.h
@@ -35,7 +35,7 @@ class VbWidget : public QWidget
 {
     Q_OBJECT
 public:
-    explicit VbWidget(QWidget *parent = 0);
+    explicit VbWidget(QWidget *parent = nullptr);
 
 signals:
 
diff --git a/tests/manual/qopenglwidget/openglwidget/openglwidget.h b/tests/manual/qopenglwidget/openglwidget/openglwidget.h
index 32fb4e2660..06ec5b1a40 100644
--- a/tests/manual/qopenglwidget/openglwidget/openglwidget.h
+++ b/tests/manual/qopenglwidget/openglwidget/openglwidget.h
@@ -37,7 +37,7 @@ class OpenGLWidget : public QOpenGLWidget
 {
     Q_OBJECT
 public:
-    OpenGLWidget(int interval = 30, const QVector3D &rotAxis = QVector3D(0, 1, 0), QWidget *parent = 0);
+    OpenGLWidget(int interval = 30, const QVector3D &rotAxis = QVector3D(0, 1, 0), QWidget *parent = nullptr);
     ~OpenGLWidget();
 
     void initializeGL();
diff --git a/tests/manual/qscreen/propertyfield.h b/tests/manual/qscreen/propertyfield.h
index 4d7074f913..364eef2f6c 100644
--- a/tests/manual/qscreen/propertyfield.h
+++ b/tests/manual/qscreen/propertyfield.h
@@ -42,7 +42,7 @@ class PropertyField : public QLineEdit
 {
     Q_OBJECT
 public:
-    explicit PropertyField(QObject* subject, const QMetaProperty& prop, QWidget *parent = 0);
+    explicit PropertyField(QObject* subject, const QMetaProperty& prop, QWidget *parent = nullptr);
 
 signals:
 
diff --git a/tests/manual/qtabbar/tabbarform.h b/tests/manual/qtabbar/tabbarform.h
index 7db3f71fa5..ac101d6402 100644
--- a/tests/manual/qtabbar/tabbarform.h
+++ b/tests/manual/qtabbar/tabbarform.h
@@ -13,7 +13,7 @@ class TabBarForm : public QWidget
     Q_OBJECT
 
 public:
-    explicit TabBarForm(QWidget *parent = 0);
+    explicit TabBarForm(QWidget *parent = nullptr);
     ~TabBarForm();
 
     Ui::TabBarForm *ui;
diff --git a/tests/manual/qtbug-8933/widget.h b/tests/manual/qtbug-8933/widget.h
index aac6134d09..bc26971a9c 100644
--- a/tests/manual/qtbug-8933/widget.h
+++ b/tests/manual/qtbug-8933/widget.h
@@ -40,7 +40,7 @@ namespace Ui {
 class Widget : public QWidget {
     Q_OBJECT
 public:
-    Widget(QWidget *parent = 0);
+    Widget(QWidget *parent = nullptr);
     ~Widget();
 
 public slots:
diff --git a/tests/manual/qtexteditlist/widget.h b/tests/manual/qtexteditlist/widget.h
index ffece6a6db..f22dae6add 100644
--- a/tests/manual/qtexteditlist/widget.h
+++ b/tests/manual/qtexteditlist/widget.h
@@ -41,7 +41,7 @@ class Widget : public QWidget
     Q_OBJECT
 
 public:
-    explicit Widget(QWidget *parent = 0);
+    explicit Widget(QWidget *parent = nullptr);
     ~Widget();
 public slots:
     void setFontPointSize(int value);
diff --git a/tests/manual/qtouchevent/main.cpp b/tests/manual/qtouchevent/main.cpp
index 099aff22c4..b71fe503aa 100644
--- a/tests/manual/qtouchevent/main.cpp
+++ b/tests/manual/qtouchevent/main.cpp
@@ -37,7 +37,7 @@ class MultitouchTestWidget : public QWidget, public Ui::Form
     Q_OBJECT
 
 public:
-    MultitouchTestWidget(QWidget *parent = 0)
+    MultitouchTestWidget(QWidget *parent = nullptr)
         : QWidget(parent)
     {
         setAttribute(Qt::WA_QuitOnClose, false);
diff --git a/tests/manual/qtouchevent/touchwidget.h b/tests/manual/qtouchevent/touchwidget.h
index 792c14e765..4036693169 100644
--- a/tests/manual/qtouchevent/touchwidget.h
+++ b/tests/manual/qtouchevent/touchwidget.h
@@ -45,7 +45,7 @@ public:
     bool seenMousePress, seenMouseMove, seenMouseRelease;
     bool closeWindowOnMouseRelease;
 
-    inline TouchWidget(QWidget *parent = 0)
+    inline TouchWidget(QWidget *parent = nullptr)
         : QWidget(parent)
     {
         reset();
diff --git a/tests/manual/repaint/shared/shared.h b/tests/manual/repaint/shared/shared.h
index 9ca5cbe2be..d6bef849f5 100644
--- a/tests/manual/repaint/shared/shared.h
+++ b/tests/manual/repaint/shared/shared.h
@@ -37,7 +37,7 @@ Q_OBJECT
 public:
     int hue;
     bool pressed;
-    StaticWidget(QWidget *parent = 0)
+    StaticWidget(QWidget *parent = nullptr)
     :QWidget(parent)
     {
         setAttribute(Qt::WA_StaticContents);
diff --git a/tests/manual/repaint/tableview/main.cpp b/tests/manual/repaint/tableview/main.cpp
index 8fd4f3b424..07d1529d1d 100644
--- a/tests/manual/repaint/tableview/main.cpp
+++ b/tests/manual/repaint/tableview/main.cpp
@@ -36,7 +36,7 @@
 class CellWidget : public QWidget
 {
 public:
-    CellWidget(QWidget *parent = 0) : QWidget(parent) {}
+    CellWidget(QWidget *parent = nullptr) : QWidget(parent) {}
     void paintEvent(QPaintEvent * event)
     {
         static int value = 200;
diff --git a/tests/manual/textrendering/textperformance/main.cpp b/tests/manual/textrendering/textperformance/main.cpp
index 9d238ad420..8cbef84119 100644
--- a/tests/manual/textrendering/textperformance/main.cpp
+++ b/tests/manual/textrendering/textperformance/main.cpp
@@ -41,7 +41,7 @@ class FontBlaster: public QWidget
     Q_OBJECT
 
 public:
-    FontBlaster(QWidget *parent = 0)
+    FontBlaster(QWidget *parent = nullptr)
         : QWidget(parent)
         , m_currentMode(0)
     {
diff --git a/tests/manual/transientwindow/mainwindow.h b/tests/manual/transientwindow/mainwindow.h
index 253bf1726e..d822442b15 100644
--- a/tests/manual/transientwindow/mainwindow.h
+++ b/tests/manual/transientwindow/mainwindow.h
@@ -37,7 +37,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
 
 public slots:
diff --git a/tests/manual/widgetgrab/main.cpp b/tests/manual/widgetgrab/main.cpp
index 6430386ee0..45c3feeefe 100644
--- a/tests/manual/widgetgrab/main.cpp
+++ b/tests/manual/widgetgrab/main.cpp
@@ -84,7 +84,7 @@ class ClickableLabel : public QLabel
 {
     Q_OBJECT
 public:
-    explicit ClickableLabel(const QString &text, QWidget *parent = 0) : QLabel(text, parent) {}
+    explicit ClickableLabel(const QString &text, QWidget *parent = nullptr) : QLabel(text, parent) {}
 
 signals:
     void pressed();
diff --git a/tests/manual/widgets/itemviews/delegate/example.cpp b/tests/manual/widgets/itemviews/delegate/example.cpp
index cd3784332a..3108c65654 100644
--- a/tests/manual/widgets/itemviews/delegate/example.cpp
+++ b/tests/manual/widgets/itemviews/delegate/example.cpp
@@ -37,7 +37,7 @@
 class ExampleEditor : public QLineEdit
 {
 public:
-    ExampleEditor(QWidget *parent = 0):QLineEdit(parent) { qDebug() << "ctor"; }
+    ExampleEditor(QWidget *parent = nullptr):QLineEdit(parent) { qDebug() << "ctor"; }
     ~ExampleEditor() { QApplication::instance()->quit(); }
 };
 
diff --git a/tests/manual/widgets/itemviews/qheaderview/qheaderviewtest1.cpp b/tests/manual/widgets/itemviews/qheaderview/qheaderviewtest1.cpp
index 85f79bedfc..e78f4a5e37 100644
--- a/tests/manual/widgets/itemviews/qheaderview/qheaderviewtest1.cpp
+++ b/tests/manual/widgets/itemviews/qheaderview/qheaderviewtest1.cpp
@@ -74,7 +74,7 @@ class Window : public QWidget
 {
     Q_OBJECT
 public:
-    Window(QWidget *parent = 0): QWidget(parent), ckMovable(0), tableView(0), cbSelectionMode(0), m_taskInstructions(0)
+    Window(QWidget *parent = nullptr): QWidget(parent), ckMovable(0), tableView(0), cbSelectionMode(0), m_taskInstructions(0)
     {
         m_taskInstructions = new QLabel();
         if (sizeof(tasks) > 0)
diff --git a/tests/manual/widgets/widgets/bigmenucreator/mainwindow.h b/tests/manual/widgets/widgets/bigmenucreator/mainwindow.h
index 2990f592e9..6d19d0e649 100644
--- a/tests/manual/widgets/widgets/bigmenucreator/mainwindow.h
+++ b/tests/manual/widgets/widgets/bigmenucreator/mainwindow.h
@@ -40,7 +40,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    explicit MainWindow(QWidget *parent = 0);
+    explicit MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
 
     void doAPS(QWidget *menu, int level);
diff --git a/tests/manual/widgets/widgets/defaultUpMenuBar/main.cpp b/tests/manual/widgets/widgets/defaultUpMenuBar/main.cpp
index 2a78f9d0f0..a6b9ca218f 100644
--- a/tests/manual/widgets/widgets/defaultUpMenuBar/main.cpp
+++ b/tests/manual/widgets/widgets/defaultUpMenuBar/main.cpp
@@ -60,7 +60,7 @@
 class MainWindow : public QMainWindow
 {
 public:
-    MainWindow(QWidget *parent = 0) : QMainWindow(parent)
+    MainWindow(QWidget *parent = nullptr) : QMainWindow(parent)
     {
         auto *menu1Act1 = new QAction("Action 1");
         auto *menu1Act2 = new QAction("Action 2");
diff --git a/tests/manual/widgets/widgets/multiscreen-menus/mainwindow.h b/tests/manual/widgets/widgets/multiscreen-menus/mainwindow.h
index 7689062221..9500d501ef 100644
--- a/tests/manual/widgets/widgets/multiscreen-menus/mainwindow.h
+++ b/tests/manual/widgets/widgets/multiscreen-menus/mainwindow.h
@@ -40,7 +40,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    explicit MainWindow(QWidget *parent = 0);
+    explicit MainWindow(QWidget *parent = nullptr);
     ~MainWindow();
 
     void contextMenuEvent(QContextMenuEvent *e) override;
diff --git a/tests/manual/widgets/widgets/qtoolbutton/menuOnMultiScreens/main.cpp b/tests/manual/widgets/widgets/qtoolbutton/menuOnMultiScreens/main.cpp
index d55f507717..c048cd3609 100644
--- a/tests/manual/widgets/widgets/qtoolbutton/menuOnMultiScreens/main.cpp
+++ b/tests/manual/widgets/widgets/qtoolbutton/menuOnMultiScreens/main.cpp
@@ -40,7 +40,7 @@
 class MyMainWindow : public QMainWindow
 {
 public:
-    MyMainWindow(QWidget *parent = 0) : QMainWindow(parent)
+    MyMainWindow(QWidget *parent = nullptr) : QMainWindow(parent)
     {
         auto *toolBar = new QToolBar;
         QPixmap pix(16, 16);
diff --git a/tests/manual/windowchildgeometry/controllerwidget.cpp b/tests/manual/windowchildgeometry/controllerwidget.cpp
index 7a0a29fc61..1ceb785e9e 100644
--- a/tests/manual/windowchildgeometry/controllerwidget.cpp
+++ b/tests/manual/windowchildgeometry/controllerwidget.cpp
@@ -273,7 +273,7 @@ void WidgetWindowControl::statesChanged()
 class Window : public QWindow
 {
 public:
-    explicit Window(QWindow *parent = 0)
+    explicit Window(QWindow *parent = nullptr)
         : QWindow(parent)
         , m_backingStore(new QBackingStore(this))
         , m_color(Qt::GlobalColor(QRandomGenerator::global()->bounded(18)))
diff --git a/tests/manual/windowchildgeometry/controllerwidget.h b/tests/manual/windowchildgeometry/controllerwidget.h
index 4744bfc905..d255953dd7 100644
--- a/tests/manual/windowchildgeometry/controllerwidget.h
+++ b/tests/manual/windowchildgeometry/controllerwidget.h
@@ -136,7 +136,7 @@ class ControllerWidget : public QMainWindow
 {
     Q_OBJECT
 public:
-    explicit ControllerWidget(QWidget *parent = 0);
+    explicit ControllerWidget(QWidget *parent = nullptr);
     ~ControllerWidget();
 private:
     QScopedPointer<QWindow> m_testWindow;
diff --git a/tests/manual/windowflags/controllerwindow.cpp b/tests/manual/windowflags/controllerwindow.cpp
index bde24b00d1..7477e21d46 100644
--- a/tests/manual/windowflags/controllerwindow.cpp
+++ b/tests/manual/windowflags/controllerwindow.cpp
@@ -247,7 +247,7 @@ static Qt::WindowStates windowState(const QObject *o)
 
 class EventFilter : public QObject {
 public:
-    explicit EventFilter(QObject *parent = 0) : QObject(parent) {}
+    explicit EventFilter(QObject *parent = nullptr) : QObject(parent) {}
 
     bool eventFilter(QObject *o, QEvent *e)
     {
diff --git a/tests/manual/windowflags/controllerwindow.h b/tests/manual/windowflags/controllerwindow.h
index c623256112..e4d8f2df0c 100644
--- a/tests/manual/windowflags/controllerwindow.h
+++ b/tests/manual/windowflags/controllerwindow.h
@@ -51,7 +51,7 @@ class ControllerWidget : public QWidget
     Q_OBJECT
 
 public:
-    explicit ControllerWidget(QWidget *parent = 0);
+    explicit ControllerWidget(QWidget *parent = nullptr);
 
     virtual bool eventFilter(QObject *o, QEvent *e);
 
@@ -91,7 +91,7 @@ class LogWidget : public QPlainTextEdit
 {
     Q_OBJECT
 public:
-    explicit LogWidget(QWidget *parent = 0);
+    explicit LogWidget(QWidget *parent = nullptr);
     ~LogWidget();
 
     static LogWidget *instance() { return m_instance; }
diff --git a/tests/manual/windowflags/previewwindow.h b/tests/manual/windowflags/previewwindow.h
index 8f8fc39211..ab309a0139 100644
--- a/tests/manual/windowflags/previewwindow.h
+++ b/tests/manual/windowflags/previewwindow.h
@@ -46,7 +46,7 @@ class PreviewWidget : public QWidget
     Q_OBJECT
 
 public:
-    PreviewWidget(QWidget *parent = 0);
+    PreviewWidget(QWidget *parent = nullptr);
 
     void setWindowFlags(Qt::WindowFlags flags);
 
@@ -65,7 +65,7 @@ class PreviewDialog : public QDialog
     Q_OBJECT
 
 public:
-    PreviewDialog(QWidget *parent = 0);
+    PreviewDialog(QWidget *parent = nullptr);
 
     void setWindowFlags(Qt::WindowFlags flags);
 
diff --git a/tests/manual/windowgeometry/controllerwidget.cpp b/tests/manual/windowgeometry/controllerwidget.cpp
index b188ea58e3..0bf089e934 100644
--- a/tests/manual/windowgeometry/controllerwidget.cpp
+++ b/tests/manual/windowgeometry/controllerwidget.cpp
@@ -297,7 +297,7 @@ void WidgetWindowControl::statesChanged()
 class Window : public QWindow
 {
 public:
-    explicit Window(QWindow *parent = 0)
+    explicit Window(QWindow *parent = nullptr)
         : QWindow(parent)
         , m_backingStore(new QBackingStore(this))
     {
diff --git a/tests/manual/windowgeometry/controllerwidget.h b/tests/manual/windowgeometry/controllerwidget.h
index 4d8bb2d717..4b5dfac348 100644
--- a/tests/manual/windowgeometry/controllerwidget.h
+++ b/tests/manual/windowgeometry/controllerwidget.h
@@ -142,7 +142,7 @@ class ControllerWidget : public QMainWindow
 {
     Q_OBJECT
 public:
-    explicit ControllerWidget(QWidget *parent = 0);
+    explicit ControllerWidget(QWidget *parent = nullptr);
     ~ControllerWidget();
 
 private:
diff --git a/tests/manual/windowmodality/main.cpp b/tests/manual/windowmodality/main.cpp
index 46693cdddd..3b79b5c798 100644
--- a/tests/manual/windowmodality/main.cpp
+++ b/tests/manual/windowmodality/main.cpp
@@ -51,7 +51,7 @@ class CustomDialog : public QDialog, public Ui::Dialog
 {
     Q_OBJECT
 public:
-    CustomDialog(QWidget *parent = 0)
+    CustomDialog(QWidget *parent = nullptr)
         : QDialog(parent)
     {
         setupUi(this);
@@ -101,7 +101,7 @@ private slots:
 private:
     void newDialog(DialogType dialogType, Qt::WindowModality windowModality)
     {
-        QWidget *parent = 0;
+        QWidget *parent = nullptr;
         if (useThisAsParentCheckBox->isChecked())
             parent = this;
         else if (createSiblingDialogCheckBox->isChecked())
@@ -166,7 +166,7 @@ class Widget : public QWidget, public Ui::Widget
 {
     Q_OBJECT
 public:
-    Widget(QWidget *parent = 0)
+    Widget(QWidget *parent = nullptr)
         : QWidget(parent)
     {
         setupUi(this);
@@ -218,7 +218,7 @@ private slots:
 private:
     void newDialog(DialogType dialogType, Qt::WindowModality windowModality)
     {
-        QWidget *parent = 0;
+        QWidget *parent = nullptr;
         if (useThisAsParentCheckBox->isChecked())
             parent = this;
 
diff --git a/tests/manual/xembed-raster/rasterwindow.h b/tests/manual/xembed-raster/rasterwindow.h
index b1a556023b..faa44f49cc 100644
--- a/tests/manual/xembed-raster/rasterwindow.h
+++ b/tests/manual/xembed-raster/rasterwindow.h
@@ -35,7 +35,7 @@ class RasterWindow : public QWindow
 {
     Q_OBJECT
 public:
-    explicit RasterWindow(QWindow *parent = 0);
+    explicit RasterWindow(QWindow *parent = nullptr);
 
     virtual void render(QPainter *painter);
 
-- 
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