Clean program exit on system shutdown/logout

src/sessionapplication.h

@@ -0,0 +1,39 @@
+#ifndef SESSIONAPPLICATION_H
+#define SESSIONAPPLICATION_H
+
+#ifdef Q_WS_MAC
+#include "qmacapplication.h"
+#else
+#include "qtsingleapplication.h"
+#endif
+
+#include <QSessionManager>
+
+class SessionApplication :
+#ifdef Q_WS_MAC
+    public QMacApplication
+#else
+    public QtSingleApplication
+#endif
+{
+  Q_OBJECT
+
+public:
+  SessionApplication(const QString &id, int &argc, char **argv) :
+#ifdef Q_WS_MAC
+  QMacApplication(id, argc, argv)
+#else
+  QtSingleApplication(id, argc, argv)
+#endif
+  {}
+
+  void commitData(QSessionManager & manager) {
+    Q_UNUSED(manager);
+    emit sessionIsShuttingDown();
+  }
+
+  signals:
+    void sessionIsShuttingDown();
+};
+
+#endif // SESSIONAPPLICATION_H