获取网卡MAC地址

获取网卡MAC地址 Option Explicit 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 ncb_retcode As Byte ncb_lsn As Byte ncb_num As Byte ncb_buffer As Long ncb_length As Integer ncb_callname As String * NCBNAMSZ ncb_name As String * NCBNAMSZ ncb_rto As Byte ncb_sto As Byte ncb_post As Long ncb_lana_num As Byte ncb_cmd_cplt As Byte ncb_reserve(9) As Byte ' Reserved, must be 0 ncb_event As Long End Type Private Type ADAPTER_STATUS adapter_address(5) As Byte rev_major As Byte reserved0 As Byte adapter_type As Byte rev_minor As Byte 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 Private Function EthernetAddress(LanaNumber As Long) As String Dim udtNCB As NCB Dim bytResponse As Byte Dim udtASTAT As ASTAT Dim udtTempASTAT As ASTAT Dim lngASTAT As Long Dim strOut As String Dim x As Integer udtNCB.ncb_command = NCBRESET bytResponse = Netbios(udtNCB) udtNCB.ncb_command = NCBASTAT udtNCB.ncb_lana_num = LanaNumber udtNCB.ncb_callname = "* " udtNCB.ncb_length = Len(udtASTAT) lngASTAT = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS Or HEAP_ZERO_MEMORY, udtNCB.ncb_length) strOut = "" If lngASTAT Then udtNCB.ncb_buffer = lngASTAT bytResponse = Netbios(udtNCB) CopyMemory udtASTAT, udtNCB.ncb_buffer, Len(udtASTAT) With udtASTAT.adapt For x = 0 To 5 strOut = strOut & Right$("00" & Hex$(.adapter_address(x)), 2) Next x End With HeapFree GetProcessHeap(), 0, lngASTAT End If EthernetAddress = strOut End Function Private Sub Form_Load() Text1 = "This machine is Ethernet Address: " & EthernetAddress(0) End Sub 本文来自CSDN博客，转载请标明出处: 建议不要使用Netbios函数，推荐使用IP助手函数。Netbios函数得到的MAC经常是不准确的。它依赖于机器上安装网络的顺序。比如先装 IPX协议再装TCP协议，与先装TCP再装IPX所得到的MAC很有可能不一致。这是因为Netbios函数会得到很多的虚拟MAC地址而不是真正的网卡MAC。 IPCONFIG就是使用IP助手函数来做的。以下是我的做法请参考: #include "iphlpapi.h " #pragma comment(lib, "iphlpapi.lib ") //---------------------------------------------- //功能:获得网卡物理地址 //参数:strMac 返回网卡物理地址 //返回:TRUE 成功 // FALSE 失败 //---------------------------------------------- BOOL CCApp::GetMacAddress(CString &strMac) { PIP_ADAPTER_INFO pAdapterInfo; DWORD AdapterInfoSize; TCHAR szMac[32] = {0}; DWORD Err; AdapterInfoSize = 0; Err = GetAdaptersInfo(NULL, &AdapterInfoSize); if((Err != 0) && (Err != ERROR_BUFFER_OVERFLOW)){ TRACE( "获得网卡信息失败～ "); return FALSE; } // 分配网卡信息内存 pAdapterInfo = (PIP_ADAPTER_INFO) GlobalAlloc(GPTR, AdapterInfoSize); if(pAdapterInfo == NULL){ TRACE( "分配网卡信息内存失败 "); return FALSE; } if(GetAdaptersInfo(pAdapterInfo, &AdapterInfoSize) != 0){ TRACE(_T( "获得网卡信息失败～\n ")); GlobalFree(pAdapterInfo); return FALSE; } strMac.Format(_T( "%02X%02X%02X%02X%02X%02X "), pAdapterInfo-> Address[0], pAdapterInfo-> Address[1], pAdapterInfo-> Address[2], pAdapterInfo-> Address[3], pAdapterInfo-> Address[4], pAdapterInfo-> Address[5]); GlobalFree(pAdapterInfo); return TRUE; }