The DS_DOMAIN_CONTROLLER_INFO_1W structure defines DC information that is returned as a part of the response to an InfoLevel = 1 request. The struct contains information about a single DC in the domain.

 typedef struct {
   [string, unique] WCHAR* NetbiosName;
   [string, unique] WCHAR* DnsHostName;
   [string, unique] WCHAR* SiteName;
   [string, unique] WCHAR* ComputerObjectName;
   [string, unique] WCHAR* ServerObjectName;
   BOOL fIsPdc;
   BOOL fDsEnabled;
 } DS_DOMAIN_CONTROLLER_INFO_1W;

NetbiosName: NetBIOS name of the DC.

DnsHostName: DNS host name of the DC.

SiteName: RDN of the site object.

ComputerObjectName: DN of the computer object that corresponds to the DC.

ServerObjectName: DN of the server object that corresponds to the DC.

fIsPdc: True if and only if the DC is the PDC FSMO role owner.

fDsEnabled: A Boolean value that indicates whether or not the machine is a domain controller. This value MUST be TRUE.