refs #741, allow to discard settings

(not saving, but continue closing)

src/blackgui/components/applicationclosedialog.h

@@ -14,6 +14,7 @@
 
 #include <QDialog>
 #include <QScopedPointer>
+#include <QAbstractButton>
 
 namespace Ui { class CApplicationCloseDialog; }
 namespace BlackGui
@@ -38,6 +39,12 @@ namespace BlackGui
             //! Accepted
             void ps_onAccepted();
 
+            //! Rejected
+            void ps_onRejected();
+
+            //! Button pressed
+            void ps_buttonClicked(QAbstractButton *button);
+
         private:
             QScopedPointer<Ui::CApplicationCloseDialog> ui;
             QStringList m_settingskeys;