--- a/QTfrontend/util/MessageDialog.h	Wed Feb 20 02:21:58 2013 +0100
+++ b/QTfrontend/util/MessageDialog.h	Tue Apr 02 21:00:57 2013 +0200
@@ -19,7 +19,6 @@
 #ifndef MESSAGEDIALOG_H
 #define MESSAGEDIALOG_H
 
-#include <QString>
 #include <QMessageBox>
 
 class QWidget;
@@ -27,9 +26,18 @@
 class MessageDialog
 {
     public:
+        static int ShowFatalMessage(const QString & msg, QWidget * parent = 0);
         static int ShowErrorMessage(const QString & msg, QWidget * parent = 0);
         static int ShowInfoMessage(const QString & msg, QWidget * parent = 0);
-        static int ShowMessage(const QString & msg, const QString & title = QString(), QMessageBox::Icon icon = QMessageBox::NoIcon, QWidget * parent = 0);
+        /**
+         * @brief Displays a message.
+         * @param title message title or <code>NULL</code> if no/default title
+         * @param msg message to display
+         * @param icon (optional) icon to be displayed next to the message
+         * @param parent parent Widget
+         * @return a QMessageBox::StandardButton value indicating which button was clicked
+         */
+        static int ShowMessage(const QString & title, const QString & msg, QMessageBox::Icon icon = QMessageBox::NoIcon, QWidget * parent = 0);
 };
 
 #endif