谁把这个函数模块改成DELPHI的？（VB6源码） ( 积分: 50 )

因为我在应用PING的时候，不仅仅是需要知道TIME　OUT的情况，还有其他的提示信息，比如TTL　EXPIRED　IN　TRASMIT、还有HOST　UNREADCHABLE等，我在DELPHI里如何能知道所有这些提示信息呢？

下面是源代码(VB6)：(完善的出错控制，所以是个好函数）

Option Explicit

Private Const IP_SUCCESS As Long = 0
Private Const IP_STATUS_BASE As Long = 11000
Private Const IP_BUF_TOO_SMALL As Long = (11000 + 1)
Private Const IP_DEST_NET_UNREACHABLE As Long = (11000 + 2)
Private Const IP_DEST_HOST_UNREACHABLE As Long = (11000 + 3)
Private Const IP_DEST_PROT_UNREACHABLE As Long = (11000 + 4)
Private Const IP_DEST_PORT_UNREACHABLE As Long = (11000 + 5)
Private Const IP_NO_RESOURCES As Long = (11000 + 6)
Private Const IP_BAD_OPTION As Long = (11000 + 7)
Private Const IP_HW_ERROR As Long = (11000 + 8)
Private Const IP_PACKET_TOO_BIG As Long = (11000 + 9)
Private Const IP_REQ_TIMED_OUT As Long = (11000 + 10)
Private Const IP_BAD_REQ As Long = (11000 + 11)
Private Const IP_BAD_ROUTE As Long = (11000 + 12)
Private Const IP_TTL_EXPIRED_TRANSIT As Long = (11000 + 13)
Private Const IP_TTL_EXPIRED_REASSEM As Long = (11000 + 14)
Private Const IP_PARAM_PROBLEM As Long = (11000 + 15)
Private Const IP_SOURCE_QUENCH As Long = (11000 + 16)
Private Const IP_OPTION_TOO_BIG As Long = (11000 + 17)
Private Const IP_BAD_DESTINATION As Long = (11000 + 18)
Private Const IP_ADDR_DELETED As Long = (11000 + 19)
Private Const IP_SPEC_MTU_CHANGE As Long = (11000 + 20)
Private Const IP_MTU_CHANGE As Long = (11000 + 21)
Private Const IP_UNLOAD As Long = (11000 + 22)
Private Const IP_ADDR_ADDED As Long = (11000 + 23)
Private Const IP_GENERAL_FAILURE As Long = (11000 + 50)
Private Const MAX_IP_STATUS As Long = (11000 + 50)
Private Const IP_PENDING As Long = (11000 + 255)
Private Const PING_TIMEOUT As Long = 500
Private Const WS_VERSION_REQD As Long = &H101
Private Const MIN_SOCKETS_REQD As Long = 1
Private Const SOCKET_ERROR As Long = -1
Private Const INADDR_NONE As Long = &HFFFFFFFF
Private Const MAX_WSADescription As Long = 256
Private Const MAX_WSASYSStatus As Long = 128

Private Type ICMP_OPTIONS
Ttl As Byte
Tos As Byte
Flags As Byte
OptionsSize As Byte
OptionsData As Long
End Type

Private Type ICMP_ECHO_REPLY
Address As Long
status As Long
RoundTripTime As Long
DataSize As Long
DataPointer As Long
Options As ICMP_OPTIONS
Data As String * 250
End Type

Private Type WSADATA
wVersion As Integer
wHighVersion As Integer
szDescription(0 To MAX_WSADescription) As Byte
szSystemStatus(0 To MAX_WSASYSStatus) As Byte
wMaxSockets As Long
wMaxUDPDG As Long
dwVendorInfo As Long
End Type

Private Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
Private Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal IcmpHandle As Long) As Long
Private Declare Function IcmpSendEcho Lib "icmp.dll" (ByVal IcmpHandle As Long, ByVal DestinationAddress As Long, ByVal RequestData As String, ByVal RequestSize As Long, ByVal RequestOptions As Long, ReplyBuffer As ICMP_ECHO_REPLY, ByVal ReplySize As Long, ByVal Timeout As Long) As Long
Private Declare Function WSAGetLastError Lib "wsock32" () As Long
Private Declare Function WSAStartup Lib "wsock32" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long
Private Declare Function WSACleanup Lib "wsock32" () As Long
Private Declare Function gethostname Lib "wsock32" (ByVal szHost As String, ByVal dwHostLen As Long) As Long
Private Declare Function gethostbyname Lib "wsock32" (ByVal szHost As String) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (xDest As Any, xSource As Any, ByVal nbytes As Long)
Private Declare Function inet_addr Lib "wsock32" (ByVal s As String) As Long

Private Function GetStatusCode(status As Long) As String
On Error GoTo Z
Dim Msg As String
Select Case status
Case IP_SUCCESS: Msg = "ip success"
Case INADDR_NONE: Msg = "inet_addr: bad IP format"
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"
Case IP_MTU_CHANGE: Msg = "ip mtu_change"
Case IP_UNLOAD: Msg = "ip unload"
Case IP_ADDR_ADDED: Msg = "ip addr added"
Case IP_GENERAL_FAILURE: Msg = "ip general failure"
Case IP_PENDING: Msg = "ip pending"
Case PING_TIMEOUT: Msg = "ping timeout"
Case Else: Msg = "unknown msg returned"
End Select
GetStatusCode = Msg
Exit Function
Z:
GetStatusCode = ""
End Function

Private Function Ping(sAddress As String, sDataToSend As String, ECHO As ICMP_ECHO_REPLY) As Long
On Error GoTo Z
Dim hPort As Long
Dim dwAddress As Long
dwAddress = inet_addr(sAddress)
If dwAddress <> INADDR_NONE Then
hPort = IcmpCreateFile()
If hPort Then
Call IcmpSendEcho(hPort, dwAddress, sDataToSend, Len(sDataToSend), 0, ECHO, Len(ECHO), PING_TIMEOUT)
Ping = ECHO.status
Call IcmpCloseHandle(hPort)
End If
Else
Ping = INADDR_NONE
End If
Exit Function
Z:
Ping = INADDR_NONE
End Function

'（Ping函数）
' 参数：目标IP地址
'返回值：存在返回True，否则返回False
Public Function PingIp(ByVal szIp As String) As Boolean
On Error GoTo Z
Dim WSAD As WSADATA
Dim ECHO As ICMP_ECHO_REPLY
Dim ret As Long
If WSAStartup(WS_VERSION_REQD, WSAD) = IP_SUCCESS Then
ret = Ping(Trim(szIp), "tanaya", ECHO)
If InStr(1, GetStatusCode(ret), "success&quot <> 0 Then
WSACleanup
PingIp = True
Exit Function
End If
End If
PingIp = False
Exit Function
Z:
PingIp = False
End Function

会Delphi的朋友可以把这个模块移植，很简单，不敲键盘了．

'-------------------------------------------
' 转载请注明出处
' 作者：唐细刚
' 邮箱：tanaya@163.com
'-------------------------------------------

因为我在应用PING的时候，不仅仅是需要知道TIME　OUT的情况，还有其他的提示信息，比如TTL　EXPIRED　IN　TRASMIT、还有HOST　UNREADCHABLE等，我在DELPHI里如何能知道所有这些提示信息呢？

下面是源代码(VB6)：(完善的出错控制，所以是个好函数）

Option Explicit

Private Const IP_SUCCESS As Long = 0
Private Const IP_STATUS_BASE As Long = 11000
Private Const IP_BUF_TOO_SMALL As Long = (11000 + 1)
Private Const IP_DEST_NET_UNREACHABLE As Long = (11000 + 2)
Private Const IP_DEST_HOST_UNREACHABLE As Long = (11000 + 3)
Private Const IP_DEST_PROT_UNREACHABLE As Long = (11000 + 4)
Private Const IP_DEST_PORT_UNREACHABLE As Long = (11000 + 5)
Private Const IP_NO_RESOURCES As Long = (11000 + 6)
Private Const IP_BAD_OPTION As Long = (11000 + 7)
Private Const IP_HW_ERROR As Long = (11000 + 8)
Private Const IP_PACKET_TOO_BIG As Long = (11000 + 9)
Private Const IP_REQ_TIMED_OUT As Long = (11000 + 10)
Private Const IP_BAD_REQ As Long = (11000 + 11)
Private Const IP_BAD_ROUTE As Long = (11000 + 12)
Private Const IP_TTL_EXPIRED_TRANSIT As Long = (11000 + 13)
Private Const IP_TTL_EXPIRED_REASSEM As Long = (11000 + 14)
Private Const IP_PARAM_PROBLEM As Long = (11000 + 15)
Private Const IP_SOURCE_QUENCH As Long = (11000 + 16)
Private Const IP_OPTION_TOO_BIG As Long = (11000 + 17)
Private Const IP_BAD_DESTINATION As Long = (11000 + 18)
Private Const IP_ADDR_DELETED As Long = (11000 + 19)
Private Const IP_SPEC_MTU_CHANGE As Long = (11000 + 20)
Private Const IP_MTU_CHANGE As Long = (11000 + 21)
Private Const IP_UNLOAD As Long = (11000 + 22)
Private Const IP_ADDR_ADDED As Long = (11000 + 23)
Private Const IP_GENERAL_FAILURE As Long = (11000 + 50)
Private Const MAX_IP_STATUS As Long = (11000 + 50)
Private Const IP_PENDING As Long = (11000 + 255)
Private Const PING_TIMEOUT As Long = 500
Private Const WS_VERSION_REQD As Long = &H101
Private Const MIN_SOCKETS_REQD As Long = 1
Private Const SOCKET_ERROR As Long = -1
Private Const INADDR_NONE As Long = &HFFFFFFFF
Private Const MAX_WSADescription As Long = 256
Private Const MAX_WSASYSStatus As Long = 128

Private Type ICMP_OPTIONS
Ttl As Byte
Tos As Byte
Flags As Byte
OptionsSize As Byte
OptionsData As Long
End Type

Private Type ICMP_ECHO_REPLY
Address As Long
status As Long
RoundTripTime As Long
DataSize As Long
DataPointer As Long
Options As ICMP_OPTIONS
Data As String * 250
End Type

Private Type WSADATA
wVersion As Integer
wHighVersion As Integer
szDescription(0 To MAX_WSADescription) As Byte
szSystemStatus(0 To MAX_WSASYSStatus) As Byte
wMaxSockets As Long
wMaxUDPDG As Long
dwVendorInfo As Long
End Type

Private Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
Private Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal IcmpHandle As Long) As Long
Private Declare Function IcmpSendEcho Lib "icmp.dll" (ByVal IcmpHandle As Long, ByVal DestinationAddress As Long, ByVal RequestData As String, ByVal RequestSize As Long, ByVal RequestOptions As Long, ReplyBuffer As ICMP_ECHO_REPLY, ByVal ReplySize As Long, ByVal Timeout As Long) As Long
Private Declare Function WSAGetLastError Lib "wsock32" () As Long
Private Declare Function WSAStartup Lib "wsock32" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long
Private Declare Function WSACleanup Lib "wsock32" () As Long
Private Declare Function gethostname Lib "wsock32" (ByVal szHost As String, ByVal dwHostLen As Long) As Long
Private Declare Function gethostbyname Lib "wsock32" (ByVal szHost As String) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (xDest As Any, xSource As Any, ByVal nbytes As Long)
Private Declare Function inet_addr Lib "wsock32" (ByVal s As String) As Long

Private Function GetStatusCode(status As Long) As String
On Error GoTo Z
Dim Msg As String
Select Case status
Case IP_SUCCESS: Msg = "ip success"
Case INADDR_NONE: Msg = "inet_addr: bad IP format"
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"
Case IP_MTU_CHANGE: Msg = "ip mtu_change"
Case IP_UNLOAD: Msg = "ip unload"
Case IP_ADDR_ADDED: Msg = "ip addr added"
Case IP_GENERAL_FAILURE: Msg = "ip general failure"
Case IP_PENDING: Msg = "ip pending"
Case PING_TIMEOUT: Msg = "ping timeout"
Case Else: Msg = "unknown msg returned"
End Select
GetStatusCode = Msg
Exit Function
Z:
GetStatusCode = ""
End Function

Private Function Ping(sAddress As String, sDataToSend As String, ECHO As ICMP_ECHO_REPLY) As Long
On Error GoTo Z
Dim hPort As Long
Dim dwAddress As Long
dwAddress = inet_addr(sAddress)
If dwAddress <> INADDR_NONE Then
hPort = IcmpCreateFile()
If hPort Then
Call IcmpSendEcho(hPort, dwAddress, sDataToSend, Len(sDataToSend), 0, ECHO, Len(ECHO), PING_TIMEOUT)
Ping = ECHO.status
Call IcmpCloseHandle(hPort)
End If
Else
Ping = INADDR_NONE
End If
Exit Function
Z:
Ping = INADDR_NONE
End Function

'（Ping函数）
' 参数：目标IP地址
'返回值：存在返回True，否则返回False
Public Function PingIp(ByVal szIp As String) As Boolean
On Error GoTo Z
Dim WSAD As WSADATA
Dim ECHO As ICMP_ECHO_REPLY
Dim ret As Long
If WSAStartup(WS_VERSION_REQD, WSAD) = IP_SUCCESS Then
ret = Ping(Trim(szIp), "tanaya", ECHO)
If InStr(1, GetStatusCode(ret), "success&quot <> 0 Then
WSACleanup
PingIp = True
Exit Function
End If
End If
PingIp = False
Exit Function
Z:
PingIp = False
End Function

会Delphi的朋友可以把这个模块移植，很简单，不敲键盘了．

'-------------------------------------------
' 转载请注明出处
' 作者：唐细刚
' 邮箱：tanaya@163.com
'-------------------------------------------

试试这个：
http://www.lbbsoftware.com/free/vb2delphi.htm

下载的文件没法用，好象包打的有问题，，哪位直接写成DELPHI的，好不，，或者给个思路也行，，

给你几行：
Option Explicit
>忽略

Private Const IP_SUCCESS As Long = 0
>const IP_SUCCESS:LontInt=0
Private Type ICMP_OPTIONS
Ttl As Byte
Tos As Byte
Flags As Byte
OptionsSize As Byte
OptionsData As Long
End Type
>ICMP_OPTIONS=record
Ttl: Byte
Tos : Byte
Flags: Byte
OptionsSize: Byte
OptionsData : LongInt

Private Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
> Function IcmpCreateFile:lontInt external "icmp.dll" ;stdcall;

事实上，google一下bv2delphi,遍地都是

谢谢，以下的单元内容，给写个例子调用一下：
unit icmp;

interface

{$IFDEF VER80}
// This source file is *NOT* compatible with Delphi 1 because it uses
// Win 32 features.
{$ENDIF}

uses
Windows, SysUtils, Classes, WinSock;

const
IcmpVersion = 102;
IcmpDLL = 'icmp.dll';

// IP status codes returned to transports and user IOCTLs.
IP_SUCCESS = 0;
IP_STATUS_BASE = 11000;
IP_BUF_TOO_SMALL = (IP_STATUS_BASE + 1);
IP_DEST_NET_UNREACHABLE = (IP_STATUS_BASE + 2);
IP_DEST_HOST_UNREACHABLE = (IP_STATUS_BASE + 3);
IP_DEST_PROT_UNREACHABLE = (IP_STATUS_BASE + 4);
IP_DEST_PORT_UNREACHABLE = (IP_STATUS_BASE + 5);
IP_NO_RESOURCES = (IP_STATUS_BASE + 6);
IP_BAD_OPTION = (IP_STATUS_BASE + 7);
IP_HW_ERROR = (IP_STATUS_BASE + 8);
IP_PACKET_TOO_BIG = (IP_STATUS_BASE + 9);
IP_REQ_TIMED_OUT = (IP_STATUS_BASE + 10);
IP_BAD_REQ = (IP_STATUS_BASE + 11);
IP_BAD_ROUTE = (IP_STATUS_BASE + 12);
IP_TTL_EXPIRED_TRANSIT = (IP_STATUS_BASE + 13);
IP_TTL_EXPIRED_REASSEM = (IP_STATUS_BASE + 14);
IP_PARAM_PROBLEM = (IP_STATUS_BASE + 15);
IP_SOURCE_QUENCH = (IP_STATUS_BASE + 16);
IP_OPTION_TOO_BIG = (IP_STATUS_BASE + 17);
IP_BAD_DESTINATION = (IP_STATUS_BASE + 18);

// status codes passed up on status indications.
IP_ADDR_DELETED = (IP_STATUS_BASE + 19);
IP_SPEC_MTU_CHANGE = (IP_STATUS_BASE + 20);
IP_MTU_CHANGE = (IP_STATUS_BASE + 21);

IP_GENERAL_FAILURE = (IP_STATUS_BASE + 50);

MAX_IP_STATUS = IP_GENERAL_FAILURE;

IP_PENDING = (IP_STATUS_BASE + 255);

// IP header flags
IP_FLAG_DF = $02; // Don't fragment this packet.

// IP Option Types
IP_OPT_EOL = $00; // End of list option
IP_OPT_NOP = $01; // No operation
IP_OPT_SECURITY = $82; // Security option.
IP_OPT_LSRR = $83; // Loose source route.
IP_OPT_SSRR = $89; // Strict source route.
IP_OPT_RR = $07; // Record route.
IP_OPT_TS = $44; // Timestamp.
IP_OPT_SID = $88; // Stream ID (obsolete)
MAX_OPT_SIZE = $40;

type
// IP types
TIPAddr = DWORD; // An IP address.
TIPMask = DWORD; // An IP subnet mask.
TIPStatus = DWORD; // Status code returned from IP APIs.

PIPOptionInformation = ^TIPOptionInformation;
TIPOptionInformation = packed record
TTL: Byte; // Time To Live (used for traceroute)
TOS: Byte; // Type Of Service (usually 0)
Flags: Byte; // IP header flags (usually 0)
OptionsSize: Byte; // Size of options data (usually 0, max 40)
OptionsData: PChar; // Options data buffer
end;

PIcmpEchoReply = ^TIcmpEchoReply;
TIcmpEchoReply = packed record
Address: TIPAddr; // Replying address
Status: DWord; // IP status value
RTT: DWord; // Round Trip Time in milliseconds
DataSize: Word; // Reply data size
Reserved: Word; // Reserved
Data: Pointer; // Pointer to reply data buffer
Options: TIPOptionInformation; // Reply options
end;

// IcmpCreateFile:
// Opens a handle on which ICMP Echo Requests can be issued.
// Arguments:
// None.
// Return Value:
// An open file handle or INVALID_HANDLE_VALUE. Extended error information
// is available by calling GetLastError().
TIcmpCreateFile = function: THandle; stdcall;

// IcmpCloseHandle:
// Closes a handle opened by ICMPOpenFile.
// Arguments:
// IcmpHandle - The handle to close.
// Return Value:
// TRUE if the handle was closed successfully, otherwise FALSE. Extended
// error information is available by calling GetLastError().
TIcmpCloseHandle = function(IcmpHandle: THandle): Boolean; stdcall;

// IcmpSendEcho:
// Sends an ICMP Echo request and returns one or more replies. The
// call returns when the timeout has expired or the reply buffer
// is filled.
// Arguments:
// IcmpHandle - An open handle returned by ICMPCreateFile.
// DestinationAddress - The destination of the echo request.
// RequestData - A buffer containing the data to send in the
// request.
// RequestSize - The number of bytes in the request data buffer.
// RequestOptions - Pointer to the IP header options for the request.
// May be NULL.
// ReplyBuffer - A buffer to hold any replies to the request.
// On return, the buffer will contain an array of
// ICMP_ECHO_REPLY structures followed by options
// and data. The buffer should be large enough to
// hold at least one ICMP_ECHO_REPLY structure
// and 8 bytes of data - this is the size of
// an ICMP error message.
// ReplySize - The size in bytes of the reply buffer.
// Timeout - The time in milliseconds to wait for replies.
// Return Value:
// Returns the number of replies received and stored in ReplyBuffer. If
// the return value is zero, extended error information is available
// via GetLastError().
TIcmpSendEcho = function(IcmpHandle: THandle;
DestinationAddress: TIPAddr;
RequestData: Pointer;
RequestSize: Word;
RequestOptions: PIPOptionInformation;
ReplyBuffer: Pointer;
ReplySize: DWord;
Timeout: DWord
): DWord; stdcall;

// Event handler type declaration for TICMP.OnDisplay event.
TICMPDisplay = procedure(Sender: TObject; Msg : String) of object;
TICMPReply = procedure(Sender: TObject; Error : Integer) of object;

// The object wich encapsulate the ICMP.DLL
TICMP = class(TObject)
private
hICMPdll : HModule; // Handle for ICMP.DLL
IcmpCreateFile : TIcmpCreateFile;
IcmpCloseHandle : TIcmpCloseHandle;
IcmpSendEcho : TIcmpSendEcho;
hICMP : THandle; // Handle for the ICMP Calls
FReply : TIcmpEchoReply; // ICMP Echo reply buffer
FAddress : String; // Address given
FHostName : String; // Dotted IP of host (output)
FHostIP : String; // Name of host (Output)
FIPAddress : TIPAddr; // Address of host to contact
FSize : Integer; // Packet size (default to 56)
FTimeOut : Integer; // Timeout (default to 4000mS)
FTTL : Integer; // Time To Live (for send)
FOnDisplay : TICMPDisplay; // Event handler to display
FOnEchoRequest : TNotifyEvent;
FOnEchoReply : TICMPReply;
FLastError : DWORD; // After sending ICMP packet
FAddrResolved : Boolean;
procedure ResolveAddr;
public
constructor Create; virtual;
destructor Destroy; override;
function Ping : Integer;
procedure SetAddress(Value : String);
function GetErrorString : String;

property Address : String read FAddress write SetAddress;
property Size : Integer read FSize write FSize;
property Timeout : Integer read FTimeout write FTimeout;
property Reply : TIcmpEchoReply read FReply;
property TTL : Integer read FTTL write FTTL;
property ErrorCode : Integer read FLastError;
property ErrorString : String read GetErrorString;
property HostName : String read FHostName;
property HostIP : String read FHostIP;
property OnDisplay : TICMPDisplay read FOnDisplay write FOnDisplay;
property OnEchoRequest : TNotifyEvent read FOnEchoRequest
write FOnEchoRequest;
property OnEchoReply : TICMPReply read FOnEchoReply
write FOnEchoReply;
end;

TICMPException = class(Exception);

implementation

{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
constructor TICMP.Create;
var
WSAData: TWSAData;
begin
hICMP := INVALID_HANDLE_VALUE;
FSize := 56;
FTTL := 64;
FTimeOut := 4000;

// initialise winsock
if WSAStartup($101, WSAData) <> 0 then
raise TICMPException.Create('Error initialising Winsock');

// register the icmp.dll stuff
hICMPdll := LoadLibrary(icmpDLL);
if hICMPdll = 0 then
raise TICMPException.Create('Unable to register ' + icmpDLL);

@ICMPCreateFile := GetProcAddress(hICMPdll, 'IcmpCreateFile');
@IcmpCloseHandle := GetProcAddress(hICMPdll, 'IcmpCloseHandle');
@IcmpSendEcho := GetProcAddress(hICMPdll, 'IcmpSendEcho');

if (@ICMPCreateFile = Nil) or
(@IcmpCloseHandle = Nil) or
(@IcmpSendEcho = Nil) then
raise TICMPException.Create('Error loading dll functions');

hICMP := IcmpCreateFile;
if hICMP = INVALID_HANDLE_VALUE then
raise TICMPException.Create('Unable to get ping handle');
end;

{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
destructor TICMP.Destroy;
begin
if hICMP <> INVALID_HANDLE_VALUE then
IcmpCloseHandle(hICMP);
if hICMPdll <> 0 then
FreeLibrary(hICMPdll);
WSACleanup;
inherited Destroy;
end;

{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
function MinInteger(X, Y: Integer): Integer;
begin
if X >= Y then
Result := Y
else
Result := X;
end;

{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
procedure TICMP.ResolveAddr;
var
Phe : PHostEnt; // HostEntry buffer for name lookup
begin
// Convert host address to IP address
FIPAddress := inet_addr(PChar(FAddress));
if FIPAddress <> INADDR_NONE then
// Was a numeric dotted address let it in this format
FHostName := FAddress
else begin
// Not a numeric dotted address, try to resolve by name
Phe := GetHostByName(PChar(FAddress));
if Phe = nil then begin
FLastError := GetLastError;
if Assigned(FOnDisplay) then
FOnDisplay(Self, 'Unable to resolve ' + FAddress);
Exit;
end;

FIPAddress := longint(plongint(Phe^.h_addr_list^)^);
FHostName := Phe^.h_name;
end;

FHostIP := StrPas(inet_ntoa(TInAddr(FIPAddress)));
FAddrResolved := TRUE;
end;

{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
procedure TICMP.SetAddress(Value : String);
begin
// Only change if needed (could take a long time)
if FAddress = Value then
Exit;
FAddress := Value;
FAddrResolved := FALSE;
// ResolveAddr;
end;

{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
function TICMP.GetErrorString : String;
begin
case FLastError of
IP_SUCCESS: Result := 'No error';
IP_BUF_TOO_SMALL: Result := 'Buffer too small';
IP_DEST_NET_UNREACHABLE: Result := 'Destination network unreachable';
IP_DEST_HOST_UNREACHABLE: Result := 'Destination host unreachable';
IP_DEST_PROT_UNREACHABLE: Result := 'Destination protocol unreachable';
IP_DEST_PORT_UNREACHABLE: Result := 'Destination port unreachable';
IP_NO_RESOURCES: Result := 'No resources';
IP_BAD_OPTION: Result := 'Bad option';
IP_HW_ERROR: Result := 'Hardware error';
IP_PACKET_TOO_BIG: Result := 'Packet too big';
IP_REQ_TIMED_OUT: Result := 'Request timed out';
IP_BAD_REQ: Result := 'Bad request';
IP_BAD_ROUTE: Result := 'Bad route';
IP_TTL_EXPIRED_TRANSIT: Result := 'TTL expired in transit';
IP_TTL_EXPIRED_REASSEM: Result := 'TTL expired in reassembly';
IP_PARAM_PROBLEM: Result := 'Parameter problem';
IP_SOURCE_QUENCH: Result := 'Source quench';
IP_OPTION_TOO_BIG: Result := 'Option too big';
IP_BAD_DESTINATION: Result := 'Bad Destination';
IP_ADDR_DELETED: Result := 'Address deleted';
IP_SPEC_MTU_CHANGE: Result := 'Spec MTU change';
IP_MTU_CHANGE: Result := 'MTU change';
IP_GENERAL_FAILURE: Result := 'General failure';
IP_PENDING: Result := 'Pending';
else
Result := 'ICMP error #' + IntToStr(FLastError);
end;
end;

{* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *}
function TICMP.Ping : Integer;
var
BufferSize: Integer;
pReqData, pData: Pointer;
pIPE: PIcmpEchoReply; // ICMP Echo reply buffer
IPOpt: TIPOptionInformation; // IP Options for packet to send
Msg: String;
begin
Result := 0;
FLastError := 0;

if not FAddrResolved then
ResolveAddr;

if FIPAddress = INADDR_NONE then begin
FLastError := IP_BAD_DESTINATION;
if Assigned(FOnDisplay) then
FOnDisplay(Self, 'Invalid host address');
Exit;
end;

// Allocate space for data buffer space
BufferSize := SizeOf(TICMPEchoReply) + FSize;
GetMem(pReqData, FSize);
GetMem(pData, FSize);
GetMem(pIPE, BufferSize);

try
// Fill data buffer with some data bytes
FillChar(pReqData^, FSize, $20);
Msg := 'Pinging from Delphi code written by F. Piette';
Move(Msg[1], pReqData^, MinInteger(FSize, Length(Msg)));

pIPE^.Data := pData;
FillChar(pIPE^, SizeOf(pIPE^), 0);

if Assigned(FOnEchoRequest) then
FOnEchoRequest(Self);

FillChar(IPOpt, SizeOf(IPOpt), 0);
IPOpt.TTL := FTTL;
Result := IcmpSendEcho(hICMP, FIPAddress, pReqData, FSize,
@IPOpt, pIPE, BufferSize, FTimeOut);
FLastError := GetLastError;
FReply := pIPE^;

if Assigned(FOnEchoReply) then
FOnEchoReply(Self, Result);
finally
// Free those buffers
FreeMem(pIPE);
FreeMem(pData);
FreeMem(pReqData);
end;
end;

end.

你象是在考小学生！
with TICMP.create do
try
ping;
finally
free;
end;

真的很抱歉，我不是很懂，，麻烦您帮我测一下，，我一运行，就出现错误，就是PING那个单元部分：
function TICMP.GetErrorString : String;
begin
case FLastError of
IP_SUCCESS: Result := 'No error';

这里就会出现什么地址错误，，麻烦您帮我调测一下，主要是我想在用PING的时候，能有个象WINDOWS下那样的回显结果，通的时候有TIMES，不通的时候显示各种错误信息。。。

主机的IP怎么加，比如我要PING　192.168.1.1

没有很认真看，大概是这样：
property Address : String
被ping 的ip

property OnEchoReply : TICMPReply
property OnEchoRequest :
ping中发生的事件

property ErrorString : String
如果有错误的话，读这个属性

仔细看了下Tidicmpclient.pas里的内容，原来里面有基本的错误信息定义，已经解决了，感谢张鸿林，尽管不是按上面的方式解决问题的，分还是加给你了，共勉！