Hi,
if you take a look at: http://msdn.microsoft.com/en-us/library/windows/desktop/aa363345%28v=vs.85%29.aspx you will see that the example includes the
dhcpcsdk.h library. Looking into this file you will see:
#ifndef DHCP_OPTIONS_DEFINED #define DHCP_OPTIONS_DEFINED #define OPTION_PAD 0 #define OPTION_SUBNET_MASK 1 #define OPTION_TIME_OFFSET 2 #define OPTION_ROUTER_ADDRESS 3 #define OPTION_TIME_SERVERS 4 #define OPTION_IEN116_NAME_SERVERS 5 #define OPTION_DOMAIN_NAME_SERVERS 6 #define OPTION_LOG_SERVERS 7 #define OPTION_COOKIE_SERVERS 8 #define OPTION_LPR_SERVERS 9 #define OPTION_IMPRESS_SERVERS 10 #define OPTION_RLP_SERVERS 11 #define OPTION_HOST_NAME 12 #define OPTION_BOOT_FILE_SIZE 13 #define OPTION_MERIT_DUMP_FILE 14 #define OPTION_DOMAIN_NAME 15 #define OPTION_SWAP_SERVER 16 #define OPTION_ROOT_DISK 17 #define OPTION_EXTENSIONS_PATH 18 #define OPTION_BE_A_ROUTER 19 #define OPTION_NON_LOCAL_SOURCE_ROUTING 20 #define OPTION_POLICY_FILTER_FOR_NLSR 21 #define OPTION_MAX_REASSEMBLY_SIZE 22 #define OPTION_DEFAULT_TTL 23 #define OPTION_PMTU_AGING_TIMEOUT 24 #define OPTION_PMTU_PLATEAU_TABLE 25 #define OPTION_MTU 26 #define OPTION_ALL_SUBNETS_MTU 27 #define OPTION_BROADCAST_ADDRESS 28 #define OPTION_PERFORM_MASK_DISCOVERY 29 #define OPTION_BE_A_MASK_SUPPLIER 30 #define OPTION_PERFORM_ROUTER_DISCOVERY 31 #define OPTION_ROUTER_SOLICITATION_ADDR 32 #define OPTION_STATIC_ROUTES 33 #define OPTION_TRAILERS 34 #define OPTION_ARP_CACHE_TIMEOUT 35 #define OPTION_ETHERNET_ENCAPSULATION 36 #define OPTION_TTL 37 #define OPTION_KEEP_ALIVE_INTERVAL 38 #define OPTION_KEEP_ALIVE_DATA_SIZE 39 #define OPTION_NETWORK_INFO_SERVICE_DOM 40 #define OPTION_NETWORK_INFO_SERVERS 41 #define OPTION_NETWORK_TIME_SERVERS 42 #define OPTION_VENDOR_SPEC_INFO 43 #define OPTION_NETBIOS_NAME_SERVER 44 #define OPTION_NETBIOS_DATAGRAM_SERVER 45 #define OPTION_NETBIOS_NODE_TYPE 46 #define OPTION_NETBIOS_SCOPE_OPTION 47 #define OPTION_XWINDOW_FONT_SERVER 48 #define OPTION_XWINDOW_DISPLAY_MANAGER 49 #define OPTION_REQUESTED_ADDRESS 50 #define OPTION_LEASE_TIME 51 #define OPTION_OK_TO_OVERLAY 52 #define OPTION_MESSAGE_TYPE 53 #define OPTION_SERVER_IDENTIFIER 54 #define OPTION_PARAMETER_REQUEST_LIST 55 #define OPTION_MESSAGE 56 #define OPTION_MESSAGE_LENGTH 57 #define OPTION_RENEWAL_TIME 58 #define OPTION_REBIND_TIME 59 #define OPTION_CLIENT_CLASS_INFO 60 #define OPTION_CLIENT_ID 61 #define OPTION_TFTP_SERVER_NAME 66 #define OPTION_BOOTFILE_NAME 67 #define OPTION_END 255 #endif /* DHCP_OPTIONS_DEFINED */
This isn`t all but related to your first part of the question.For the second part: The documentation tells you to pass a
_Out_ LPDWORD Version
after sucessfully ( returning ERROR_SUCCESS ) calling the function you will have a pointer to the DHCP Version inside the Version variable.
Hannes
If you have got questions about this, just ask.
In a perfect world,
users would never enter data in the wrong form,
files they choose to open would always exist
and code would never have bugs.
My
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