The VARDATA_WIRE structure defines the size and offset of the variable-length data succeeding it. This structure is used before variable-length data fields that are returned by using specific WinStationInformationClass classes (see section

 typedef struct _VARDATA_WIRE {
   USHORT Size;
   USHORT Offset;

Size: Size of the variable length data, in bytes, succeeding this structure.

Offset: Offset, in bytes, of the succeeding variable-length structure in the whole data BLOB.