DTType GetType() const;
  Property Description  
    Returns The type of the date time stored  
    Description Gets the type of this CDateTime.  
    Remarks The type effects which methods will throw a LtInvalidStateException.
e.g. You cannot call getYear() if the type is not date, dateTime, gYear or gYearMonth as no Year element is available.

	enum DTType
	{
		dt_yearZero = 0,
		dt_dateTime,
		dt_date,
		dt_gYearMonth,
		dt_gYear,
		dt_time,
		dt_gDay,
		dt_gMonth,
		dt_gMonthDay
	};