rem: void               setMessage(const QDate& d, const QString& message, const QColor& c, int flags) { set(d, message, c, MESSAGE, flags | ANY_TIME); }
add: void               setMessage(const QDateTime& dt, const QString& message, const QColor& c, int flags) { set(dt, message, c, MESSAGE, flags); }
context: 		void               setMessage(const QDate& d, const QString& message, const QColor& c, int flags)		                            { set(d, message, c, MESSAGE, flags | ANY_TIME); }