inverted monitor

src/qt/qt_mainwindow.hpp

@@ -57,6 +57,7 @@ private slots:
     void on_actionHardware_Renderer_OpenGL_triggered();
     void on_actionSoftware_Renderer_triggered();
     void on_actionResizable_window_triggered(bool checked);
+    void on_actionInverted_VGA_monitor_triggered();
 
     void refreshMediaMenu();
     void showMessage_(const QString& header, const QString& message);