This section defines the programmatic elements in the DNS API. The following functions are defined:
DnsAcquireContextHandle
DnsExtractRecordsFromMessage
DnsFreeRecordList
DnsModifyRecordsInSet
DnsNameCompare
DnsReleaseContextHandle
DnsRecordCompare
DnsRecordCopyEx
DnsRecordSetCompare
DnsRecordSetCopyEx
DnsRecordSetDetach
DnsReplaceRecordSet
DnsQuery
DnsQueryConfig
DnsValidateName
DnsWriteQuestionToBuffer