1 files changed, 2 insertions, 0 deletions
diff --git a/examples/widgets/mainwindows/application/mainwindow.h b/examples/widgets/mainwindows/application/mainwindow.h
index 08b4aa17f5..9712604125 100644
--- a/examples/widgets/mainwindows/application/mainwindow.h
+++ b/examples/widgets/mainwindows/application/mainwindow.h
@@ -47,6 +47,7 @@ QT_BEGIN_NAMESPACE
 class QAction;
 class QMenu;
 class QPlainTextEdit;
+class QSessionManager;
 QT_END_NAMESPACE
 
 //! [0]
@@ -69,6 +70,7 @@ private slots:
     bool saveAs();
     void about();
     void documentWasModified();
+    void commitData(QSessionManager &);
 
 private:
     void createActions();