vb中如何调用远程dll
请问大家，在vb中，客户端如何调用服务器远程dll，获取服务器端的网卡地址？
急！急！急！
谢谢大家。
[解决办法]
如果要求只是这样的话，不需要调用服务器上的dll，可以从客户端取得局域网内其它机器的MAC地址，只需要提供IP。
调用示例：取得 192.168.1.10 这台电脑的 mac
?GetMacAddress( "192.168.1.10 ")
'----------------------
'模块功能：获取 mac 地址
'调用方式：GetMacAddress()
'参数说明：可选，Mac 所绑定的 IP 地址，默认为本机地址
'返 回 值：字符串
'最后修改：2005/11/23
'----------------------
'----------------------
'; 关于 GetMacAddress() 的 API 常量与声明
Private Const NCBASTAT = &H33
Private Const NCBNAMSZ = 16
Private Const HEAP_ZERO_MEMORY = &H8
Private Const HEAP_GENERATE_EXCEPTIONS = &H4
Private Const NCBRESET = &H32
Private Type NCB
ncb_command As Byte 'Integer
ncb_retcode As Byte 'Integer
ncb_lsn As Byte 'Integer
ncb_num As Byte ' Integer
ncb_buffer As Long 'String
ncb_length As Integer
ncb_callname As String * NCBNAMSZ
ncb_name As String * NCBNAMSZ
ncb_rto As Byte 'Integer
ncb_sto As Byte ' Integer
ncb_post As Long
ncb_lana_num As Byte 'Integer
ncb_cmd_cplt As Byte 'Integer
ncb_reserve(9) As Byte ' Reserved, must be 0
ncb_event As Long
End Type
Private Type ADAPTER_STATUS
adapter_address(5) As Byte 'As String * 6
rev_major As Byte 'Integer
reserved0 As Byte 'Integer
adapter_type As Byte 'Integer
rev_minor As Byte 'Integer
duration As Integer
frmr_recv As Integer
frmr_xmit As Integer
iframe_recv_err As Integer
xmit_aborts As Integer
xmit_success As Long
recv_success As Long
iframe_xmit_err As Integer
recv_buff_unavail As Integer
t1_timeouts As Integer
ti_timeouts As Integer
Reserved1 As Long
free_ncbs As Integer
max_cfg_ncbs As Integer
max_ncbs As Integer
xmit_buf_unavail As Integer
max_dgram_size As Integer
pending_sess As Integer
max_cfg_sess As Integer
max_sess As Integer
max_sess_pkt_size As Integer
name_count As Integer
End Type
Private Type NAME_BUFFER
name As String * NCBNAMSZ
name_num As Integer
name_flags As Integer
End Type
Private Type ASTAT
adapt As ADAPTER_STATUS
NameBuff(30) As NAME_BUFFER
End Type
Private Declare Function Netbios Lib "netapi32.dll " (pncb As NCB) As Byte
Private Declare Sub CopyMemory Lib "KERNEL32 " Alias "RtlMoveMemory " (hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Private Declare Function GetProcessHeap Lib "KERNEL32 " () As Long
Private Declare Function HeapAlloc Lib "KERNEL32 " (ByVal hHeap As Long, ByVal dwFlags As Long, ByVal dwBytes As Long) As Long
Private Declare Function HeapFree Lib "KERNEL32 " (ByVal hHeap As Long, ByVal dwFlags As Long, lpMem As Any) As Long
'----------------------
'; 关于 GetHostAddress() 的 API 常量与声明
Private Const WS_VERSION_REQD = &H101
Private Const WS_VERSION_MAJOR = WS_VERSION_REQD \ &H100 And &HFF&
Private Const WS_VERSION_MINOR = WS_VERSION_REQD And &HFF&
Private Const MIN_SOCKETS_REQD = 1
Private Const SOCKET_ERROR = -1
Private Const WSADescription_Len = 256
Private Const WSASYS_Status_Len = 128
Private Type HOSTENT
hName As Long
hAliases As Long
hAddrType As Integer
hLength As Integer
hAddrList As Long
End Type
Private Type WSADATA
wversion As Integer
wHighVersion As Integer
szDescription(0 To WSADescription_Len) As Byte
szSystemStatus(0 To WSASYS_Status_Len) As Byte
iMaxSockets As Integer
iMaxUdpDg As Integer
lpszVendorInfo As Long
End Type
Private Declare Function WSAGetLastError Lib "WSOCK32.DLL " () As Long
Private Declare Function WSAStartup Lib "WSOCK32.DLL " (ByVal wVersionRequired&, lpWSAData As WSADATA) As Long
Private Declare Function WSACleanup Lib "WSOCK32.DLL " () As Long
Private Declare Function gethostbyname Lib "WSOCK32.DLL " (ByVal hostname$) As Long
Private Declare Sub RtlMoveMemory Lib "KERNEL32 " (hpvDest As Any, ByVal hpvSource&, ByVal cbCopy&)
'-----------------------------
'获取 mac 地址
'-----------------------------
Function GetMacAddress(Optional ByVal sIP As String) As String
Dim sRtn As String
Dim myNcb As NCB
Dim bRet As Byte
Dim aIP() As String
Dim x As Long
Dim nIP As String
If Trim(sIP) = " " Then sIP = GetHostAddress()
If Trim(sIP) = " " Then Exit Function
'校验IP地址合法性
If InStr(sIP, ". ") = 0 Then
GetMacAddress = "无效的IP地址. "
Exit Function
End If
aIP = Split(sIP, ". ", -1, vbTextCompare)
If UBound(aIP()) <> 3 Then
'GetMACAddress = "无效的IP地址. "
Exit Function
End If
For x = 0 To UBound(aIP())
If Len(aIP(x)) > 3 Then
'GetMACAddress = "无效的IP地址 "
Exit Function
End If
If IsNumeric(aIP(x)) = False Then
'GetMACAddress = "无效的IP地址 "
Exit Function
End If
If InStr(aIP(x), ", ") <> 0 Then
'GetMACAddress = "无效的IP地址 "
Exit Function
End If
[解决办法]
'（续上)
If CLng(aIP(x)) > 255 Then
'GetMACAddress = "无效的IP地址 "
Exit Function
End If
If nIP = " " Then
nIP = String(3 - Len(aIP(x)), "0 ") & aIP(x)
Else
nIP = nIP & ". " & String(3 - Len(aIP(x)), "0 ") & aIP(x)
End If
Next
sRtn = " "
myNcb.ncb_command = NCBRESET
bRet = Netbios(myNcb)
myNcb.ncb_command = NCBASTAT
myNcb.ncb_lana_num = 0
myNcb.ncb_callname = nIP & Chr(0)
Dim myASTAT As ASTAT, tempASTAT As ASTAT
Dim pASTAT As Long
myNcb.ncb_length = Len(myASTAT)
pASTAT = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS Or HEAP_ZERO_MEMORY, myNcb.ncb_length)
If pASTAT = 0 Then
'GetMACAddress = "memory allcoation failed! "
Exit Function
End If
myNcb.ncb_buffer = pASTAT
bRet = Netbios(myNcb)
If bRet <> 0 Then
'GetMACAddress = "不能从当前IP地址获得MAC，当前IP地址: " & sIP
Exit Function
End If
CopyMemory myASTAT, myNcb.ncb_buffer, Len(myASTAT)
Dim sTemp As String
Dim i As Long
For i = 0 To 5
sTemp = Hex(myASTAT.adapt.adapter_address(i))
If i = 0 Then
sRtn = IIf(Len(sTemp) < 2, "0 " & sTemp, sTemp)
Else
sRtn = sRtn & Space(1) & IIf(Len(sTemp) < 2, "0 " & sTemp, sTemp)
End If
Next
HeapFree GetProcessHeap(), 0, pASTAT
GetMacAddress = sRtn
End Function
'----------------------------
'获取本机IP地址
'----------------------------
Private Function GetHostAddress() As String
If Not SocketsInitialize() Then Exit Function
Dim hostent_addr As Long
Dim host As HOSTENT
Dim hostip_addr As Long
Dim temp_ip_address() As Byte
Dim i As Integer
Dim ip_address As String
hostent_addr = gethostbyname( " ")
If hostent_addr = 0 Then
'MsgBox "Can 't resolve name. "
Exit Function
End If
RtlMoveMemory host, hostent_addr, LenB(host)
RtlMoveMemory hostip_addr, host.hAddrList, 4
ReDim temp_ip_address(1 To host.hLength)
RtlMoveMemory temp_ip_address(1), hostip_addr, host.hLength
For i = 1 To host.hLength
ip_address = ip_address & temp_ip_address(i) & ". "
Next
ip_address = Mid$(ip_address, 1, Len(ip_address) - 1)
SocketsCleanup
GetHostAddress = ip_address
End Function
Private Function hibyte(ByVal wParam As Integer)
hibyte = wParam \ &H100 And &HFF&
End Function
Private Function lobyte(ByVal wParam As Integer)
lobyte = wParam And &HFF&
End Function
Private Function SocketsInitialize() As Boolean
Dim WSAD As WSADATA
Dim iReturn As Integer
Dim sLowByte As String, sHighByte As String, sMsg As String
iReturn = WSAStartup(WS_VERSION_REQD, WSAD)
If iReturn <> 0 Then
'MsgBox "Winsock.dll is not responding. "
Exit Function
End If
If lobyte(WSAD.wversion) < WS_VERSION_MAJOR Or (lobyte(WSAD.wversion) = WS_VERSION_MAJOR And hibyte(WSAD.wversion) < WS_VERSION_MINOR) Then
sHighByte = Trim$(Str$(hibyte(WSAD.wversion)))
sLowByte = Trim$(Str$(lobyte(WSAD.wversion)))
'sMsg = "Windows Sockets version " & sLowByte & ". " & sHighByte
'sMsg = sMsg & " is not supported by winsock.dll "
'MsgBox sMsg
Exit Function
End If
If WSAD.iMaxSockets < MIN_SOCKETS_REQD Then
'sMsg = "This application requires a minimum of "
'sMsg = sMsg & Trim$(Str$(MIN_SOCKETS_REQD)) & " supported sockets. "
'MsgBox sMsg
Exit Function
End If
SocketsInitialize = True
End Function
Private Sub SocketsCleanup()
Dim lReturn As Long
lReturn = WSACleanup()
'If lReturn <> 0 Then
'MsgBox "Socket error " & Trim$(Str$(lReturn)) & " occurred in Cleanup "
' Exit Sub
'End If
End Sub
------解决方案--------------------
顶阿勇
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