Documentation: Update CommonTableModel/StringListModel snippets

Update CommonTableModel/StringListModel snippets:
  - 0 -> nullptr
  - use 'override'
  - replace "" with QString()
  - use QStringLiteral instead QString
  - pass role to dataChanged() signal

Change-Id: I5949d1bd6fee3186f12191f1f6235ae18908096e
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

1 files changed, 8 insertions, 8 deletions

diff --git a/src/widgets/doc/snippets/stringlistmodel/model.h b/src/widgets/doc/snippets/stringlistmodel/model.h
index 50769ef67f..7012152b27 100644
--- a/src/widgets/doc/snippets/stringlistmodel/model.h
+++ b/src/widgets/doc/snippets/stringlistmodel/model.h
@@ -61,26 +61,26 @@ class StringListModel : public QAbstractListModel
     Q_OBJECT
 
 public:
-    StringListModel(const QStringList &strings, QObject *parent = 0)
+    StringListModel(const QStringList &strings, QObject *parent = nullptr)
         : QAbstractListModel(parent), stringList(strings) {}
 
-    int rowCount(const QModelIndex &parent = QModelIndex()) const;
-    QVariant data(const QModelIndex &index, int role) const;
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    QVariant data(const QModelIndex &index, int role) const override;
     QVariant headerData(int section, Qt::Orientation orientation,
 //! [0] //! [1]
-                        int role = Qt::DisplayRole) const;
+                        int role = Qt::DisplayRole) const override;
 //! [1]
 
 //! [2]
-    Qt::ItemFlags flags(const QModelIndex &index) const;
+    Qt::ItemFlags flags(const QModelIndex &index) const override;
     bool setData(const QModelIndex &index, const QVariant &value,
 //! [2] //! [3]
-                 int role = Qt::EditRole);
+                 int role = Qt::EditRole) override;
 //! [3]
 
 //! [4]
-    bool insertRows(int position, int rows, const QModelIndex &index = QModelIndex());
-    bool removeRows(int position, int rows, const QModelIndex &index = QModelIndex());
+    bool insertRows(int position, int rows, const QModelIndex &index = QModelIndex()) override;
+    bool removeRows(int position, int rows, const QModelIndex &index = QModelIndex()) override;
 //! [4]
 
 //! [5]