发信人: plindge()
整理人: fishy(2000-05-23 14:07:54), 站内信件
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'=======================================================
' Welcome To Plindge Studio http://plindge.yeah.net
' E-Mail: seeleen@ netease.com
'=======================================================
' (3) How To Get The Network Neighbor
Option Explicit
Private 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 Type
Private 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 Lon
g
Private Declare Function WNetEnumResource Lib "mpr.dll" Alias _
"WNetEnumResourceA" (ByVal hEnum As Long, lpcCount As Long, _
ByVal lpBuffer As Long, lpBufferSize As Long) As Long
Private Declare Function WNetCloseEnum Lib "mpr.dll" _
(ByVal hEnum As Long) As Long
Private Const RESOURCE_CONNECTED = &H1
Private Const RESOURCE_GLOBALNET = &H2
Private Const RESOURCE_REMEMBERED = &H3
Private Const RESOURCETYPE_ANY = &H0
Private Const RESOURCETYPE_DISK = &H1
Private Const RESOURCETYPE_PRINT = &H2
Private Const RESOURCETYPE_UNKNOWN = &HFFFF
Private Const RESOURCEUSAGE_CONNECTABLE = &H1
Private Const RESOURCEUSAGE_CONTAINER = &H2
Private Const RESOURCEUSAGE_RESERVED = &H80000000
Private 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 Long
Private Declare Function GlobalFree Lib "KERNEL32" _
(ByVal hMem As Long) As Long
Private 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 Long
Public Function DoNetEnum(list As Object) As Boolean
Dim 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 Long
On Error Resume Next
list.AddItem " "
list.Clear
If Err.Number > 0 Then Exit Function
On 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 --- Enume
rate each of these
CopyMemory NR, ByVal p, LenB(NR)
list.AddItem "网络邻居工作组：" & _
PointerToString(NR.lpRemoteName)
DoNetEnum2 NR, list
p = p + LenB(NR)
Next i
End If
DoNetEnum = True
ErrorHandler:
On Error Resume Next
If lpBuff <> 0 Then GlobalFree (lpBuff)
WNetCloseEnum (hEnum) 'Close the enumeration
End If
End Function
Private 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 Function
Private 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 "工作组中的计算机及路径：" & i & " " & Pointe
rToString(NR.lpRemoteName)
p = p + LenB(NR)
Next i
End If
If lpBuff <> 0 Then GlobalFree (lpBuff)
WNetCloseEnum (hEnum) 'Close the enumeration
End If
End Sub
' Usage Example: DoNetEnum List1 (List1 is a ListBox)
' You can put the information to a Treeview
' To be continue...
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※ 修改:．plindge 于 May 17 12:21:10 修改本文．[FROM: 202.103.160.26]
※ 来源:．月光软件站 http://www.moon-soft.com．[FROM: 202.103.160.26]
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