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Aug 30th, 2000, 08:42 AM
#1
Thread Starter
New Member
Was just wondering if its possible to create a listing of all the systems visible in the Network Neighbourhood for your average Windows Networking LAN using VB...
Anyone got any ideas on this?
- Reprise
"Hello, I would like to buy a fish licence please..."
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Aug 31st, 2000, 07:27 AM
#2
Lively Member
Not exactly, but close..
I'm also looking for a way to list the network neighborhood, so if you hear anything, I would be very happy if you could share the information with me.
One way to solve it(The one I use) is to create a list with comp. that are soupposed to be there, and then have a function to try and connect to all of these. Those that are succesfull will be added to the "Avaliable" list.
Anyway.. That's one way to solve it.. Not a very good one, but it works.. 
Hopes this helps.
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Aug 31st, 2000, 05:11 PM
#3
Thread Starter
New Member
Yeah no worries  If anyone gives me the slightest hint of a good way of doing it I'll let you know.
- Reprise
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Sep 1st, 2000, 02:20 AM
#4
Lively Member
 Find Network
check out http://www.planet-source-code.com
Search for "DomainTree". you should end up downloading a program called "DoaminTree". This little progg lists all avaliable computers/domaind/workgroups on the network. Included sourcecode. Works great!
They will try to steal everything you own,
It goes on and on and on...
Pain - On and On
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Sep 1st, 2000, 06:09 PM
#5
Thread Starter
New Member
Sweet Thanx heaps man...
- Reprise
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Sep 4th, 2000, 09:57 PM
#6
Addicted Member
Code:
'Paste this into a module
Option Explicit
Public 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
Public 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 Long
Public Declare Function WNetEnumResource Lib "mpr.dll" Alias _
"WNetEnumResourceA" ( _
ByVal hEnum As Long, _
lpcCount As Long, _
ByVal lpBuffer As Long, _
lpBufferSize As Long) As Long
Public Declare Function WNetCloseEnum Lib "mpr.dll" ( _
ByVal hEnum As Long) As Long
'RESOURCE ENUMERATION.
Public Const RESOURCE_CONNECTED = &H1
Public Const RESOURCE_GLOBALNET = &H2
Public Const RESOURCE_REMEMBERED = &H3
Public Const RESOURCETYPE_ANY = &H0
Public Const RESOURCETYPE_DISK = &H1
Public Const RESOURCETYPE_PRINT = &H2
Public Const RESOURCETYPE_UNKNOWN = &HFFFF
Public Const RESOURCEUSAGE_CONNECTABLE = &H1
Public Const RESOURCEUSAGE_CONTAINER = &H2
Public 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 Sub DoNetEnum()
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
'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.
'100 00 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)
Form1.Show
Form1.List1.AddItem "Network Name " & PointerToString(NR.lpRemoteName)
DoNetEnum2 NR
p = p + LenB(NR)
Next i
End If
If lpBuff <> 0 Then GlobalFree (lpBuff)
WNetCloseEnum (hEnum) 'Close the enumeration
End If
End Sub
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
Public Sub DoNetEnum2(NR As NETRESOURCE)
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.
'100 00 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)
Form1.List1.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
Else
End If
End Sub
'This is for form1 which has a list1
Private Sub Form_Load()
DoNetEnum
End Sub
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