3.4.7.3 Pack Modification
When the server detects that a pack was modified, for each callback object that is registered in the list of callback objects, the server MUST call the callback object's IVdsAdviseSink::OnNotify (section 3.3.4.3.1) method by using a VDS_NOTIFICATION (section 2.2.1.3.9) structure that has the following attributes:
objectType member is VDS_NTT_PACK.
Pack member is a VDS_PACK_NOTIFICATION (section 2.2.1.3.2) with the following attributes:
ulEvent is VDS_NF_PACK_MODIFY.
packId is the VDS_OBJECT_ID (section 2.2.1.1.3) of the pack object.