Cleanup Itemviews examples

Cleanup the Itemviews examples
 - use nullptr instead 0
 - use for loop instead foreach
 - include own header first
 - remove uselss includes

Change-Id: I32e9f64356e42038707d063dcad977239ce1fe9e
Reviewed-by: Luca Beldi <v.ronin@yahoo.it>
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/examples/widgets/itemviews/spinboxdelegate/delegate.h b/examples/widgets/itemviews/spinboxdelegate/delegate.h
index 47ef1555f7..5dbdda9cd0 100644
--- a/examples/widgets/itemviews/spinboxdelegate/delegate.h
+++ b/examples/widgets/itemviews/spinboxdelegate/delegate.h
@@ -59,7 +59,7 @@ class SpinBoxDelegate : public QStyledItemDelegate
     Q_OBJECT
 
 public:
-    SpinBoxDelegate(QObject *parent = 0);
+    SpinBoxDelegate(QObject *parent = nullptr);
 
     QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
                           const QModelIndex &index) const override;
@@ -68,8 +68,8 @@ public:
     void setModelData(QWidget *editor, QAbstractItemModel *model,
                       const QModelIndex &index) const override;
 
-    void updateEditorGeometry(QWidget *editor,
-        const QStyleOptionViewItem &option, const QModelIndex &index) const override;
+    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option,
+                              const QModelIndex &index) const override;
 };
 //! [0]