DsGetSpnA

function DsGetSpnA(

  ServiceType: DS_SPN_NAME_TYPE;

  ServiceClass: LPCSTR;

  ServiceName: LPCSTR;

  InstancePort: USHORT;

  cInstanceNames: USHORT;

  pInstanceNames: LPCSTR;

  pInstancePorts: PUSHORT;

  var pcSpn: DWORD;

  var prpszSpn: LPSTR

):DWORD;