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>

1 files changed, 7 insertions, 5 deletions

diff --git a/examples/widgets/tutorials/modelview/6_treeview/mainwindow.h b/examples/widgets/tutorials/modelview/6_treeview/mainwindow.h
index b533c0283e..38446c7a73 100644
--- a/examples/widgets/tutorials/modelview/6_treeview/mainwindow.h
+++ b/examples/widgets/tutorials/modelview/6_treeview/mainwindow.h
@@ -7,7 +7,7 @@
 #include <QMainWindow>
 
 QT_BEGIN_NAMESPACE
-class QTreeView; //forward declarations
+class QTreeView; // forward declarations
 class QStandardItemModel;
 class QStandardItem;
 QT_END_NAMESPACE
@@ -16,14 +16,16 @@ QT_END_NAMESPACE
 class MainWindow : public QMainWindow
 {
     Q_OBJECT
+public:
+    explicit MainWindow(QWidget *parent = nullptr);
+
 private:
-    QTreeView *treeView;
-    QStandardItemModel *standardModel;
     QList<QStandardItem *> prepareRow(const QString &first,
                                       const QString &second,
                                       const QString &third) const;
-public:
-    MainWindow(QWidget *parent = nullptr);
+
+    QTreeView *treeView;
+    QStandardItemModel *standardModel;
 };
 
 #endif // MAINWINDOW_H