模块部分： Option ExplicitPrivate Type NETRESOURCE dwScope As Long dwType As Long dwDisplayType As Long dwUsage As Long lpLocalName As Long lpRemoteName As Long lpComment As Long lpProvider As Long End TypePrivate Declare Function WNetOpenEnum Lib "mpr.dll" Alias _ "WNetOpenEnumA" (ByVal dwScope As Long, ByVal dwType As Long, _ ByVal dwUsage As Long, lpNetResource As Any, lphEnum As Long) As LongPrivate Declare Function WNetEnumResource Lib "mpr.dll" Alias _ "WNetEnumResourceA" (ByVal hEnum As Long, lpcCount As Long, _ ByVal lpBuffer As Long, lpBufferSize As Long) As LongPrivate Declare Function WNetCloseEnum Lib "mpr.dll" _ (ByVal hEnum As Long) As LongPrivate Const RESOURCE_CONNECTED = &H1 Private Const RESOURCE_GLOBALNET = &H2 Private Const RESOURCE_REMEMBERED = &H3Private Const RESOURCETYPE_ANY = &H0 Private Const RESOURCETYPE_DISK = &H1 Private Const RESOURCETYPE_PRINT = &H2 Private Const RESOURCETYPE_UNKNOWN = &HFFFFPrivate Const RESOURCEUSAGE_CONNECTABLE = &H1 Private Const RESOURCEUSAGE_CONTAINER = &H2 Private Const RESOURCEUSAGE_RESERVED = &H80000000Private Const GMEM_FIXED = &H0 Private Const GMEM_ZEROINIT = &H40 Private Const GPTR = (GMEM_FIXED Or GMEM_ZEROINIT)Private Declare Function GlobalAlloc Lib "KERNEL32" _ (ByVal wFlags As Long, ByVal dwBytes As Long) As LongPrivate Declare Function GlobalFree Lib "KERNEL32" _ (ByVal hMem As Long) As LongPrivate Declare Sub CopyMemory Lib "KERNEL32" Alias _ "RtlMoveMemory" (hpvDest As Any, hpvSource As Any, _ ByVal cbCopy As Long)
Private Declare Function CopyPointer2String Lib _ "KERNEL32" Alias "lstrcpyA" (ByVal NewString As _ String, ByVal OldString As Long) As LongPublic Function DoNetEnum(list As Object) As Boolean'PURPOSE: DISPLAYS NETWORK NAME AND 'ALL COMPUTERS ON THE NETWORK IN A LIST 'BOX'PARAMETER: ListBox (or any control with similar 'interface, such as ComboBox) in which to display 'list of computers'RETURNS: True if successful, false otherwiseDim hEnum As Long, lpBuff As Long, NR As NETRESOURCE Dim cbBuff As Long, cCount As Long Dim p As Long, res As Long, i As LongOn Error Resume Next 'test to see if list is a 'list box type control list.AddItem " " list.Clear If Err.Number > 0 Then Exit FunctionOn Error GoTo ErrorHandler'Setup the NETRESOURCE input structure. NR.lpRemoteName = 0 cbBuff = 10000 cCount = &HFFFFFFFF'Open a Net enumeration operation handle: hEnum. res = WNetOpenEnum(RESOURCE_GLOBALNET, _ RESOURCETYPE_ANY, 0, NR, hEnum)If res = 0 Then 'Create a buffer large enough for the results. '10000 bytes should be sufficient. lpBuff = GlobalAlloc(GPTR, cbBuff) 'Call the enumeration function. res = WNetEnumResource(hEnum, cCount, lpBuff, cbBuff) If res = 0 Then p = lpBuff 'WNetEnumResource fills the buffer with an array of 'NETRESOURCE structures. Walk through the list and print 'each local and remote name. For i = 1 To cCount ' All we get back are the Global Network Containers --- Enumerate each of these CopyMemory NR, ByVal p, LenB(NR) list.AddItem "Network Name " & _ PointerToString(NR.lpRemoteName) DoNetEnum2 NR, list p = p + LenB(NR) Next i End If DoNetEnum = TrueErrorHandler: On Error Resume Next If lpBuff <> 0 Then GlobalFree (lpBuff) WNetCloseEnum (hEnum) 'Close the enumerationEnd IfEnd FunctionPrivate Function PointerToString(p As Long) As String 'The values returned in the NETRESOURCE structures are pointers to 'ANSI strings so they need to be converted to Visual Basic Strings. Dim s As String s = String(255, Chr$(0)) CopyPointer2String s, p PointerToString = Left(s, InStr(s, Chr$(0)) - 1)End FunctionPrivate Sub DoNetEnum2(NR As NETRESOURCE, list As Object) Dim hEnum As Long, lpBuff As Long Dim cbBuff As Long, cCount As Long Dim p As Long, res As Long, i As Long 'Setup the NETRESOURCE input structure. cbBuff = 10000 cCount = &HFFFFFFFF 'Open a Net enumeration operation handle: hEnum. res = WNetOpenEnum(RESOURCE_GLOBALNET, _ RESOURCETYPE_ANY, 0, NR, hEnum) If res = 0 Then 'Create a buffer large enough for the results. '10000 bytes should be sufficient. lpBuff = GlobalAlloc(GPTR, cbBuff) 'Call the enumeration function. res = WNetEnumResource(hEnum, cCount, lpBuff, cbBuff) If res = 0 Then p = lpBuff 'WNetEnumResource fills the buffer with an array of 'NETRESOURCE structures. Walk through the list and print 'each remote name. For i = 1 To cCount CopyMemory NR, ByVal p, LenB(NR) list.AddItem "Network Computer #" & i & " " & PointerToString(NR.lpRemoteName) p = p + LenB(NR) Next i End If If lpBuff <> 0 Then GlobalFree (lpBuff) WNetCloseEnum (hEnum) 'Close the enumeration End IfEnd Sub窗体部分：（添加一个名为list1的listbox） Private Sub Form_Load() DoNetEnum List1 End Sub
Option ExplicitPrivate Type NETRESOURCE
dwScope As Long
dwType As Long
dwDisplayType As Long
dwUsage As Long
lpLocalName As Long
lpRemoteName As Long
lpComment As Long
lpProvider As Long
End TypePrivate Declare Function WNetOpenEnum Lib "mpr.dll" Alias _
"WNetOpenEnumA" (ByVal dwScope As Long, ByVal dwType As Long, _
ByVal dwUsage As Long, lpNetResource As Any, lphEnum As Long) As LongPrivate Declare Function WNetEnumResource Lib "mpr.dll" Alias _
"WNetEnumResourceA" (ByVal hEnum As Long, lpcCount As Long, _
ByVal lpBuffer As Long, lpBufferSize As Long) As LongPrivate Declare Function WNetCloseEnum Lib "mpr.dll" _
(ByVal hEnum As Long) As LongPrivate Const RESOURCE_CONNECTED = &H1
Private Const RESOURCE_GLOBALNET = &H2
Private Const RESOURCE_REMEMBERED = &H3Private Const RESOURCETYPE_ANY = &H0
Private Const RESOURCETYPE_DISK = &H1
Private Const RESOURCETYPE_PRINT = &H2
Private Const RESOURCETYPE_UNKNOWN = &HFFFFPrivate Const RESOURCEUSAGE_CONNECTABLE = &H1
Private Const RESOURCEUSAGE_CONTAINER = &H2
Private Const RESOURCEUSAGE_RESERVED = &H80000000Private Const GMEM_FIXED = &H0
Private Const GMEM_ZEROINIT = &H40
Private Const GPTR = (GMEM_FIXED Or GMEM_ZEROINIT)Private Declare Function GlobalAlloc Lib "KERNEL32" _
(ByVal wFlags As Long, ByVal dwBytes As Long) As LongPrivate Declare Function GlobalFree Lib "KERNEL32" _
(ByVal hMem As Long) As LongPrivate Declare Sub CopyMemory Lib "KERNEL32" Alias _
"RtlMoveMemory" (hpvDest As Any, hpvSource As Any, _
ByVal cbCopy As Long)
Private Declare Function CopyPointer2String Lib _
"KERNEL32" Alias "lstrcpyA" (ByVal NewString As _
String, ByVal OldString As Long) As LongPublic Function DoNetEnum(list As Object) As Boolean'PURPOSE: DISPLAYS NETWORK NAME AND
'ALL COMPUTERS ON THE NETWORK IN A LIST
'BOX'PARAMETER: ListBox (or any control with similar
'interface, such as ComboBox) in which to display
'list of computers'RETURNS: True if successful, false otherwiseDim hEnum As Long, lpBuff As Long, NR As NETRESOURCE
Dim cbBuff As Long, cCount As Long
Dim p As Long, res As Long, i As LongOn Error Resume Next
'test to see if list is a
'list box type control
list.AddItem " "
list.Clear
If Err.Number > 0 Then Exit FunctionOn Error GoTo ErrorHandler'Setup the NETRESOURCE input structure.
NR.lpRemoteName = 0
cbBuff = 10000
cCount = &HFFFFFFFF'Open a Net enumeration operation handle: hEnum.
res = WNetOpenEnum(RESOURCE_GLOBALNET, _
RESOURCETYPE_ANY, 0, NR, hEnum)If res = 0 Then 'Create a buffer large enough for the results.
'10000 bytes should be sufficient.
lpBuff = GlobalAlloc(GPTR, cbBuff)
'Call the enumeration function.
res = WNetEnumResource(hEnum, cCount, lpBuff, cbBuff)
If res = 0 Then
p = lpBuff
'WNetEnumResource fills the buffer with an array of
'NETRESOURCE structures. Walk through the list and print
'each local and remote name.
For i = 1 To cCount
' All we get back are the Global Network Containers --- Enumerate each of these
CopyMemory NR, ByVal p, LenB(NR)
list.AddItem "Network Name " & _
PointerToString(NR.lpRemoteName) DoNetEnum2 NR, list
p = p + LenB(NR)
Next i
End If
DoNetEnum = TrueErrorHandler:
On Error Resume Next
If lpBuff <> 0 Then GlobalFree (lpBuff)
WNetCloseEnum (hEnum) 'Close the enumerationEnd IfEnd FunctionPrivate Function PointerToString(p As Long) As String 'The values returned in the NETRESOURCE structures are pointers to
'ANSI strings so they need to be converted to Visual Basic Strings. Dim s As String
s = String(255, Chr$(0))
CopyPointer2String s, p
PointerToString = Left(s, InStr(s, Chr$(0)) - 1)End FunctionPrivate Sub DoNetEnum2(NR As NETRESOURCE, list As Object) Dim hEnum As Long, lpBuff As Long
Dim cbBuff As Long, cCount As Long
Dim p As Long, res As Long, i As Long 'Setup the NETRESOURCE input structure.
cbBuff = 10000
cCount = &HFFFFFFFF 'Open a Net enumeration operation handle: hEnum.
res = WNetOpenEnum(RESOURCE_GLOBALNET, _
RESOURCETYPE_ANY, 0, NR, hEnum) If res = 0 Then 'Create a buffer large enough for the results.
'10000 bytes should be sufficient.
lpBuff = GlobalAlloc(GPTR, cbBuff)
'Call the enumeration function.
res = WNetEnumResource(hEnum, cCount, lpBuff, cbBuff) If res = 0 Then
p = lpBuff
'WNetEnumResource fills the buffer with an array of
'NETRESOURCE structures. Walk through the list and print
'each remote name.
For i = 1 To cCount
CopyMemory NR, ByVal p, LenB(NR)
list.AddItem "Network Computer #" & i & " " & PointerToString(NR.lpRemoteName)
p = p + LenB(NR)
Next i
End If If lpBuff <> 0 Then GlobalFree (lpBuff)
WNetCloseEnum (hEnum) 'Close the enumeration End IfEnd Sub窗体部分：（添加一个名为list1的listbox）
Private Sub Form_Load()
DoNetEnum List1
End Sub
netgetdcname