VB-Homepage Tipp 110

Auslesen der Netzkartenadresse

Für Einzelplatz PC Besitzer ist nachfolgender Tipp uninteressant, aber die werden sich sicher auch nicht auf diese Seite verirren. Wenn Sie aber Ihren PC in einem mehr oder weniger großen Netzwerk beheimatet wissen, dann könnte es sehr interessant sein, auf einfache Art und Weise die Netzkartenadresse auszulesen, da diese ja als eindeutige Identifikation für einen PC im Netzwerk zählt. So hab ich für Sie wiedermal ein kleines VB4 Projekt bereitgestellt. Bitte bedienen Sie sich ... JETZT. macaddr.vbp Form=macaddr.frm ProjWinSize=152,402,248,215 ProjWinShow=2 IconForm="Form1" Title="Macadresse" ExeName32="macaddr.exe" Name="Projekt1" HelpContextID="0" StartMode=0 VersionCompatible32="0" MajorVer=1 MinorVer=0 RevisionVer=0 AutoIncrementVer=0 ServerSupportFiles=0 VersionLegalCopyright="©A.Gamper 11/97" macaddr.frm VERSION 4.00 Begin VB.Form Form1 BackColor = &H00808000& BorderStyle = 5 'Sizable ToolWindow Caption = "VB-Homepage Tipp" ClientHeight = 945 ClientLeft = 2910 ClientTop = 3345 ClientWidth = 2520 BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} Name = "MS Sans Serif" Size = 8.25 Charset = 0 Weight = 700 Underline = 0 'False Italic = 0 'False Strikethrough = 0 'False EndProperty Height = 1350 Left = 2850 LinkTopic = "Form1" MaxButton = 0 'False MinButton = 0 'False ScaleHeight = 945 ScaleWidth = 2520 ShowInTaskbar = 0 'False Top = 3000 Width = 2640 Begin VB.Label Label4 BackStyle = 0 'Transparent Caption = "----------------------MAC---------------------" BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} Name = "MS Sans Serif" Size = 8.25 Charset = 0 Weight = 400 Underline = 0 'False Italic = 0 'False Strikethrough = 0 'False EndProperty Height = 255 Left = 120 TabIndex = 1 Top = 600 Width = 2295 End Begin VB.Label Label2 Alignment = 2 'Center BackColor = &H0000FF00& BorderStyle = 1 'Fixed Single BeginProperty Font {0BE35203-8F91-11CE-9DE3-00AA004BB851} Name = "Courier New" Size = 14.25 Charset = 0 Weight = 700 Underline = 0 'False Italic = 0 'False Strikethrough = 0 'False EndProperty ForeColor = &H00000000& Height = 375 Left = 120 TabIndex = 0 Top = 240 Width = 2295 End End Attribute VB_Name = "Form1" Attribute VB_Creatable = False Attribute VB_Exposed = False 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 '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 Private Sub Form_Load() Dim myNcb As NCB Dim bRet As Byte myNcb.ncb_command = NCBRESET bRet = Netbios(myNcb) myNcb.ncb_command = NCBASTAT myNcb.ncb_lana_num = 0 myNcb.ncb_callname = "* " Dim myASTAT As ASTAT, tempASTAT As ASTAT Dim pASTAT As Long myNcb.ncb_length = Len(myASTAT) 'Debug.Print Err.LastDllError pASTAT = HeapAlloc(GetProcessHeap(), HEAP_GENERATE_EXCEPTIONS Or HEAP_ZERO_MEMORY, myNcb.ncb_length) If pASTAT = 0 Then 'Debug.Print "memory allcoation failed!" Exit Sub End If myNcb.ncb_buffer = pASTAT bRet = Netbios(myNcb) 'Debug.Print Err.LastDllError CopyMemory myASTAT, myNcb.ncb_buffer, Len(myASTAT) Label2.Caption = Hex(myASTAT.adapt.adapter_address(0)) & Hex(myASTAT.adapt.adapter_address(1)) & Hex(myASTAT.adapt.adapter_address(2)) & Hex(myASTAT.adapt.adapter_address(3)) & Hex(myASTAT.adapt.adapter_address(4)) & Hex(myASTAT.adapt.adapter_address(5)) HeapFree GetProcessHeap(), 0, pASTAT Form1.Left = Screen.Width / 2 - Form1.Width / 2 Form1.Top = Screen.Height / 2 - Form1.Height / 2 End Sub Um den Code zu nutzen, erstellen Sie sich mit einem Editor (ZBsp. Notepad) Dateien, die Sie wie beschrieben benennen und den jeweiligen Code hinein kopieren. Rufen Sie dann die *.vbp Datei aus dem Dateimanager auf oder starten Ihr VB-Programm und öffnen das Projekt.

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Quelle : MS Knowledge Base