Determines the number of handles of type PHT_SYSTEM_STATISTICS_DISK contained in the specified PHT_SYSTEM_STATISTICS object.
PRL_RESULT PrlStat_GetDisksStatsCount( PRL_HANDLE hStat, PRL_UINT32_PTR pnCount );
PrlApiStat.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_SUCCESS - function completed successfully.
Each available disk drive in the system will have its own PHT_SYSTEM_STATISTICS_DISK object instance.