INT64 in IDL

[VictorN]

http://msdn.microsoft.com/en-us/library/ms221627.aspx
There are the members

           LONGLONG            llval;           // VT_I8
           LONGLONG            * pllVal;        // VT_BYREF|VT_I8
           ULONGLONG           ullVal;          // VT_UI8
           ...