DsGetSpnW

function DsGetSpnW(

  ServiceType: DS_SPN_NAME_TYPE;

  ServiceClass: LPCWSTR;

  ServiceName: LPCWSTR;

  InstancePort: USHORT;

  cInstanceNames: USHORT;

  pInstanceNames: LPCWSTR;

  pInstancePorts: PUSHORT;

  var pcSpn: DWORD;

  var prpszSpn: LPWSTR

):DWORD;