DhcpEnumClassesV6 function (dhcpsapi.h)

The DhcpEnumClassesV6 function enumerates the user or vendor classes configured for the DHCPv6 server.

Syntax

DWORD DHCP_API_FUNCTION DhcpEnumClassesV6(
  [in]      LPWSTR                     ServerIpAddress,
  [in]      DWORD                      ReservedMustBeZero,
  [in, out] DHCP_RESUME_HANDLE         *ResumeHandle,
  [in]      DWORD                      PreferredMaximum,
  [out]     LPDHCP_CLASS_INFO_ARRAY_V6 *ClassInfoArray,
  [out]     DWORD                      *nRead,
  [out]     DWORD                      *nTotal
);

Parameters

[in] ServerIpAddress

Pointer to a Unicode string that specifies the IP address or hostname of the DHCPv6 server.

[in] ReservedMustBeZero

Reserved. This field must be set to zero.

[in, out] ResumeHandle

Pointer to a DHCP_RESUME_HANDLE value that identifies the enumeration operation. Initially, this value should be zero, with a successful call returning the handle value used for subsequent enumeration requests. For example, if PreferredMaximum is set to 100 classes, and 200 classes are stored on the server, the resume handle can be used after the first 100 classes are retrieved to obtain the next 100 on a subsequent call, and so forth.

[in] PreferredMaximum

Specifies the preferred maximum number of classes to return. If the number of remaining unenumerated classes is less than this value, then that amount will be returned. To retrieve all classes available on the DHCPv6 server, set this parameter to 0xFFFFFFFF.

[out] ClassInfoArray

Pointer to a DHCP_CLASS_INFO_ARRAY_V6 structure that contains the returned classes. If there are no classes available on the DHCP server, this parameter will return null.

[out] nRead

Pointer to a DWORD value that specifies the number of classes returned in ClassInfoArray.

[out] nTotal

Pointer to a DWORD value that specifies the total number of classes stored on the DHCP server.

Return value

This function returns ERROR_SUCCESS upon a successful call. Otherwise, it returns one of the DHCP Server Management API Error Codes.

Remarks

The caller of this function must free the memory pointed to by ClassInfoArray.

Requirements

See also

DHCP_CLASS_INFO_ARRAY_V6

DHCP_RESUME_HANDLE