Cleanup SimpleDomModel example

Cleanup the SimpleDomModel example:
 - include own headers first
 - use nullptr
 - use const where possible
 - init members in initialization list

Change-Id: If7029a774793927b9a3a9115ea4a7053402a86a1
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
Reviewed-by: Luca Beldi <v.ronin@yahoo.it>

1 files changed, 3 insertions, 3 deletions

diff --git a/examples/widgets/itemviews/simpledommodel/domitem.h b/examples/widgets/itemviews/simpledommodel/domitem.h
index b5db16009c..4a74db5139 100644
--- a/examples/widgets/itemviews/simpledommodel/domitem.h
+++ b/examples/widgets/itemviews/simpledommodel/domitem.h
@@ -58,16 +58,16 @@
 class DomItem
 {
 public:
-    DomItem(QDomNode &node, int row, DomItem *parent = 0);
+    DomItem(const QDomNode &node, int row, DomItem *parent = nullptr);
     ~DomItem();
     DomItem *child(int i);
     DomItem *parent();
     QDomNode node() const;
-    int row();
+    int row() const;
 
 private:
     QDomNode domNode;
-    QHash<int,DomItem*> childItems;
+    QHash<int, DomItem *> childItems;
     DomItem *parentItem;
     int rowNumber;
 };