Specifies a handle with write permissions, as returned by the IMSAdminBase::OpenKey method. METADATA_MASTER_ROOT_HANDLE is not valid for this operation.
Points to a string that contains the path of the key whose subkeys are to be deleted, relative to the path of hMDHandle. For example, if the handle references the /LM key, you could use the path /W3SVC to specify the Web services subkey. In this case, all subkeys below /LM/W3SVC would be deleted.