diff --git a/src/mainwindow.h b/src/mainwindow.h
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -62,8 +62,7 @@ public:
 
     PlotViewSettings viewSettings() const;
 
-    void messageHandler(QtMsgType type, const QMessageLogContext &context,
-                        const QString &msg);
+    void messageHandler(QtMsgType type, const QString &logString, const QString &msg);
 
 private:
     Ui::MainWindow *ui;
@@ -93,6 +92,8 @@ private:
     DataTextView textView;
     UpdateCheckDialog updateCheckDialog;
 
+    void handleCommandLineOptions(const QCoreApplication &app);
+
     /// Returns true if demo is running
     bool isDemoRunning();
     /// Display a secondary plot in the splitter, removing and