Cleanup QtWidgets examples

Cleanup QtWidgets examples:
 - use nullptr (clang-tidy)
 - use member-initialization
 - adjust the style
 - fix includes

Change-Id: Ic5448606aacc525ea60b615a69227017aa2b821a
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

13 files changed, 13 insertions, 13 deletions

diff --git a/examples/widgets/tutorials/addressbook/part1/addressbook.h b/examples/widgets/tutorials/addressbook/part1/addressbook.h
index 1d575e1260..4c2b456a41 100644
--- a/examples/widgets/tutorials/addressbook/part1/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part1/addressbook.h
@@ -65,7 +65,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
 
 private:
     QLineEdit *nameLine;
diff --git a/examples/widgets/tutorials/addressbook/part2/addressbook.h b/examples/widgets/tutorials/addressbook/part2/addressbook.h
index 7b1714b443..e690d14244 100644
--- a/examples/widgets/tutorials/addressbook/part2/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part2/addressbook.h
@@ -66,7 +66,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
 
 //! [slots]
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part3/addressbook.h b/examples/widgets/tutorials/addressbook/part3/addressbook.h
index 746a58a32a..f4a8aaa976 100644
--- a/examples/widgets/tutorials/addressbook/part3/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part3/addressbook.h
@@ -66,7 +66,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
 
 public slots:
     void addContact();
diff --git a/examples/widgets/tutorials/addressbook/part4/addressbook.h b/examples/widgets/tutorials/addressbook/part4/addressbook.h
index a8d4d9fe1d..307df1eb15 100644
--- a/examples/widgets/tutorials/addressbook/part4/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part4/addressbook.h
@@ -66,7 +66,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
 //! [Mode enum]
     enum Mode { NavigationMode, AddingMode, EditingMode };
 //! [Mode enum]
diff --git a/examples/widgets/tutorials/addressbook/part5/addressbook.h b/examples/widgets/tutorials/addressbook/part5/addressbook.h
index b60929a50c..9dd7ed1d89 100644
--- a/examples/widgets/tutorials/addressbook/part5/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part5/addressbook.h
@@ -69,7 +69,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
     enum Mode { NavigationMode, AddingMode, EditingMode };
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part5/finddialog.h b/examples/widgets/tutorials/addressbook/part5/finddialog.h
index 0fca6be81b..8e63eeee79 100644
--- a/examples/widgets/tutorials/addressbook/part5/finddialog.h
+++ b/examples/widgets/tutorials/addressbook/part5/finddialog.h
@@ -63,7 +63,7 @@ class FindDialog : public QDialog
     Q_OBJECT
 
 public:
-    FindDialog(QWidget *parent = 0);
+    FindDialog(QWidget *parent = nullptr);
     QString getFindText();
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part6/addressbook.h b/examples/widgets/tutorials/addressbook/part6/addressbook.h
index 8d328310f7..fca62c52b7 100644
--- a/examples/widgets/tutorials/addressbook/part6/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part6/addressbook.h
@@ -68,7 +68,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
     enum Mode { NavigationMode, AddingMode, EditingMode };
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part6/finddialog.h b/examples/widgets/tutorials/addressbook/part6/finddialog.h
index 527e0254e9..46f8047a56 100644
--- a/examples/widgets/tutorials/addressbook/part6/finddialog.h
+++ b/examples/widgets/tutorials/addressbook/part6/finddialog.h
@@ -63,7 +63,7 @@ class FindDialog : public QDialog
     Q_OBJECT
 
 public:
-    FindDialog(QWidget *parent = 0);
+    FindDialog(QWidget *parent = nullptr);
     QString getFindText();
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part7/addressbook.h b/examples/widgets/tutorials/addressbook/part7/addressbook.h
index 0f109b2ef1..47a0f3c062 100644
--- a/examples/widgets/tutorials/addressbook/part7/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part7/addressbook.h
@@ -68,7 +68,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
     enum Mode { NavigationMode, AddingMode, EditingMode };
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part7/finddialog.h b/examples/widgets/tutorials/addressbook/part7/finddialog.h
index 527e0254e9..46f8047a56 100644
--- a/examples/widgets/tutorials/addressbook/part7/finddialog.h
+++ b/examples/widgets/tutorials/addressbook/part7/finddialog.h
@@ -63,7 +63,7 @@ class FindDialog : public QDialog
     Q_OBJECT
 
 public:
-    FindDialog(QWidget *parent = 0);
+    FindDialog(QWidget *parent = nullptr);
     QString getFindText();
 
 public slots:
diff --git a/examples/widgets/tutorials/modelview/3_changingmodel/main.cpp b/examples/widgets/tutorials/modelview/3_changingmodel/main.cpp
index 2330019f93..90a8c6e894 100644
--- a/examples/widgets/tutorials/modelview/3_changingmodel/main.cpp
+++ b/examples/widgets/tutorials/modelview/3_changingmodel/main.cpp
@@ -56,7 +56,7 @@ int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
     QTableView tableView;
-    MyModel myModel(0);
+    MyModel myModel;
     tableView.setModel(&myModel);
     tableView.show();
     return a.exec();
diff --git a/examples/widgets/tutorials/modelview/7_selections/mainwindow.h b/examples/widgets/tutorials/modelview/7_selections/mainwindow.h
index c9761dd3d9..74906c831d 100644
--- a/examples/widgets/tutorials/modelview/7_selections/mainwindow.h
+++ b/examples/widgets/tutorials/modelview/7_selections/mainwindow.h
@@ -69,7 +69,7 @@ private:
 private slots:
     void selectionChangedSlot(const QItemSelection &newSelection, const QItemSelection &oldSelection);
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
 };
 
 #endif // MAINWINDOW_H
diff --git a/examples/widgets/tutorials/notepad/notepad.h b/examples/widgets/tutorials/notepad/notepad.h
index 9580ab8071..5e44dfeedc 100644
--- a/examples/widgets/tutorials/notepad/notepad.h
+++ b/examples/widgets/tutorials/notepad/notepad.h
@@ -72,7 +72,7 @@ class Notepad : public QMainWindow
 
 //! [4]
 public:
-    explicit Notepad(QWidget *parent = 0);
+    explicit Notepad(QWidget *parent = nullptr);
 //! [4]
 //! [5]
     ~Notepad();