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

Public 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


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