新建一个工程，添加一个标准模块，写入以下代码：
Option Explicit
Public Const IP_STATUS_BASE = 11000
Public Const IP_SUCCESS = 0
Public Const IP_BUF_TOO_SMALL = (11000 1)
Public Const IP_DEST_NET_UNREACHABLE = (11000 2)
Public Const IP_DEST_HOST_UNREACHABLE = (11000 3)
Public Const IP_DEST_PROT_UNREACHABLE = (11000 4)
Public Const IP_DEST_PORT_UNREACHABLE = (11000 5)
Public Const IP_NO_RESOURCES = (11000 6)
Public Const IP_BAD_OPTION = (11000 7)
Public Const IP_HW_ERROR = (11000 8)
Public Const IP_PACKET_TOO_BIG = (11000 9)
Public Const IP_REQ_TIMED_OUT = (11000 10)
Public Const IP_BAD_REQ = (11000 11)
Public Const IP_BAD_ROUTE = (11000 12)
Public Const IP_TTL_EXPIRED_TRANSIT = (11000 13)
Public Const IP_TTL_EXPIRED_REASSEM = (11000 14)
Public Const IP_PARAM_PROBLEM = (11000 15)
Public Const IP_SOURCE_QUENCH = (11000 16)
Public Const IP_OPTION_TOO_BIG = (11000 17)
Public Const IP_BAD_DESTINATION = (11000 18)
Public Const IP_ADDR_DELETED = (11000 19)
Public Const IP_SPEC_MTU_CHANGE = (11000 20)
Public Const IP_MTU_CHANGE = (11000 21)
Public Const IP_UNLOAD = (11000 22)
Public Const IP_ADDR_ADDED = (11000 23)
Public Const IP_GENERAL_FAILURE = (11000 50)
Public Const MAX_IP_STATUS = 11000 50
Public Const IP_PENDING = (11000 255)
Public Const PING_TIMEOUT = 200
Public Const WS_VERSION_REQD = &H101
Public Const WS_VERSION_MAJOR = WS_VERSION_REQD \ &H100 And &HFF&
Public Const WS_VERSION_MINOR = WS_VERSION_REQD And &HFF&
Public Const MIN_SOCKETS_REQD = 1
Public Const SOCKET_ERROR = -1
Public Const MAX_WSADescription = 256
Public Const MAX_WSASYSStatus = 128
Public Type ICMP_OPTIONS
Ttl As Byte
Tos As Byte
Flags As Byte
OptionsSize As Byte
OptionsData As Long
End Type
Dim ICMPOPT As ICMP_OPTIONS
Public Type ICMP_ECHO_REPLY
Address As Long
status As Long
RoundTripTime As Long
DataSize As Integer
Reserved As Integer
DataPointer As Long
Options As ICMP_OPTIONS
Data As String * 250
End Type
Public Type HOSTENT
hName As Long
hAliases As Long
hAddrType As Integer
hLen As Integer
hAddrList As Long
End Type
Public Type WSADATA
wVersion As Integer
wHighVersion As Integer
szDescription(0 To MAX_WSADescription) As Byte
szSystemStatus(0 To MAX_WSASYSStatus) As Byte
wMaxSockets As Integer
wMaxUDPDG As Integer
dwVendorInfo As Long
End Type
Public Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
Public Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal IcmpHandle As Long) As Long
Public Declare Function IcmpSendEcho Lib "icmp.dll" (ByVal IcmpHandle As Long, ByVal DestinationAddress As Long, ByVal RequestData As String, ByVal RequestSize As Integer, ByVal RequestOptions As Long, ReplyBuffer As ICMP_ECHO_REPLY, ByVal ReplySize As Long, ByVal Timeout As Long) As Long
Public Declare Function WSAGetLastError Lib "WSOCK32.DLL" () As Long
Public Declare Function WSAStartup Lib "WSOCK32.DLL" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long
Public Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long
Public Declare Function gethostname Lib "WSOCK32.DLL" (ByVal szHost As String, ByVal dwHostLen As Long) As Long
Public Declare Function gethostbyname Lib "WSOCK32.DLL" (ByVal szHost As String) As Long
Public Declare Sub RtlMoveMemory Lib "kernel32" (hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Public Function GetStatusCode(status As Long) As String
Dim msg As String
Select Case status
Case IP_SUCCESS: msg = "ip success"
Case IP_BUF_TOO_SMALL: msg = "ip buf too_small"
Case IP_DEST_NET_UNREACHABLE: msg = "ip dest net unreachable"
Case IP_DEST_HOST_UNREACHABLE: msg = "ip dest host unreachable"
Case IP_DEST_PROT_UNREACHABLE: msg = "ip dest prot unreachable"
Case IP_DEST_PORT_UNREACHABLE: msg = "ip dest port unreachable"
Case IP_NO_RESOURCES: msg = "ip no resources"
Case IP_BAD_OPTION: msg = "ip bad option"
Case IP_HW_ERROR: msg = "ip hw_error"
Case IP_PACKET_TOO_BIG: msg = "ip packet too_big"
Case IP_REQ_TIMED_OUT: msg = "ip req timed out"
Case IP_BAD_REQ: msg = "ip bad req"
Case IP_BAD_ROUTE: msg = "ip bad route"
Case IP_TTL_EXPIRED_TRANSIT: msg = "ip ttl expired transit"
Case IP_TTL_EXPIRED_REASSEM: msg = "ip ttl expired reassem"
Case IP_PARAM_PROBLEM: msg = "ip param_problem"
Case IP_SOURCE_QUENCH: msg = "ip source quench"
Case IP_OPTION_TOO_BIG: msg = "ip option too_big"
Case IP_BAD_DESTINATION: msg = "ip bad destination"
Case IP_ADDR_DELETED: msg = "ip addr deleted"
Case IP_SPEC_MTU_CHANGE: msg = "ip spec mtu change
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