Polish the model/view tutorial examples

- Reorder the class declarations, moving private sections last
- Make constructors explicit
- Add space to the comments
- Introduce auto
- Replace slot MainWindow::showWindowTitle() by a direct
  connection to slot QWidget::setWindowTitle().

Pick-to: 6.4 6.3
Change-Id: Ic229162434dfef5f2767d0b4e186759ca0f821f3
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

2 files changed, 7 insertions, 13 deletions

diff --git a/examples/widgets/tutorials/modelview/5_edit/mainwindow.cpp b/examples/widgets/tutorials/modelview/5_edit/mainwindow.cpp
index 863dcc5080..4fe164e888 100644
--- a/examples/widgets/tutorials/modelview/5_edit/mainwindow.cpp
+++ b/examples/widgets/tutorials/modelview/5_edit/mainwindow.cpp
@@ -11,15 +11,10 @@ MainWindow::MainWindow(QWidget *parent)
     , tableView(new QTableView(this))
 {
     setCentralWidget(tableView);
-    MyModel *myModel = new MyModel(this);
+    auto *myModel = new MyModel(this);
     tableView->setModel(myModel);
 
-    //transfer changes to the model to the window title
+    // transfer changes to the model to the window title
     connect(myModel, &MyModel::editCompleted,
-            this, &MainWindow::showWindowTitle);
-}
-
-void MainWindow::showWindowTitle(const QString &title)
-{
-    setWindowTitle(title);
+            this, &QWidget::setWindowTitle);
 }
diff --git a/examples/widgets/tutorials/modelview/5_edit/mainwindow.h b/examples/widgets/tutorials/modelview/5_edit/mainwindow.h
index e8ef3cccea..2ec6fce57d 100644
--- a/examples/widgets/tutorials/modelview/5_edit/mainwindow.h
+++ b/examples/widgets/tutorials/modelview/5_edit/mainwindow.h
@@ -7,19 +7,18 @@
 #include <QMainWindow>
 
 QT_BEGIN_NAMESPACE
-class QTableView; //forward declaration
+class QTableView; // forward declaration
 QT_END_NAMESPACE
 
 
 class MainWindow : public QMainWindow
 {
     Q_OBJECT
+public:
+    explicit MainWindow(QWidget *parent = nullptr);
+
 private:
     QTableView *tableView;
-public:
-    MainWindow(QWidget *parent = nullptr);
-public slots:
-    void showWindowTitle(const QString &title);
 };
 
 #endif // MAINWINDOW_H