The DRS_MSG_GETCHGREPLY_V7 structure defines a compressed DRS_MSG_GETCHGREPLY_V6 or DRS_MSG_GETCHGREPLY_V9 message received from the IDL_DRSGetNCChanges method.

 typedef struct {
   DWORD dwCompressedVersion;
   DRS_COMP_ALG_TYPE CompressionAlg;
   DRS_COMPRESSED_BLOB CompressedAny;
 } DRS_MSG_GETCHGREPLY_V7;

dwCompressedVersion: Version of the response in CompressedAny; MUST be set to 6 or 9.

CompressionAlg: Algorithm used to compress the response.

CompressedAny: Compressed DRS_MSG_GETCHGREPLY_V6 or DRS_MSG_GETCHGREPLY_V9 response.