--- a/src/mainwindow.h Sun Sep 06 03:00:28 2015 +0300 +++ b/src/mainwindow.h Sun Sep 06 03:10:03 2015 +0300 @@ -65,7 +65,7 @@ Q_OBJECT public: - explicit MainWindow (QWidget* parent = null, Qt::WindowFlags flags = 0); + explicit MainWindow (QWidget* parent = nullptr, Qt::WindowFlags flags = 0); ~MainWindow(); void addMessage (QString msg);