vb 获取局域网内所有电脑名称及IP地址的代码及详解

还有一个小小问题:我举一例子
我已知窗体名为"form1",而想根据窗体名"from1"操作此窗体,该如果把窗体名这个string型转换成可以对象型呢?

有更详细点的吗??我对api不甚了解..

Ctrl+T 加个Winsock控件
Me.Caption = Winsock1.LocalIP & Winsock1.LocalHostName

用winsok使用的ip地址需要用户事先知道。我认为用windows api方式可行，去查一下帮助文档吧

据jhone99提供的代码:WNetOpenEnum(resource_globalnet, resourcetype_any, 0&, ByVal 0&, henum)
提示 byval 0&用户类型不能用,为何?

Private Type NETRESOURCE
        dwScope As Long
        dwType As Long
        dwDisplayType As Long
        dwUsage As Long
        lpLocalName As String
        lpRemoteName As String
        lpComment As String
        lpProvider As String
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 NETRESOURCE, lphEnum As Long) As

以下是我结对上jhone99修改后的代码,不知道是对还是错,我还没有测试,望大家看看,有没有异常和错误
Option Explicit
Private Const resource_connected As Long = &H1&
Private Const resource_globalnet As Long = &H2&
Private Const resource_remembered As Long = &H3&
Private Const resourcedisplaytype_directory& = &H9
Private Const resourcedisplaytype_domain& = &H1
Private Const resourcedisplaytype_file& = &H4
Private Const resourcedisplaytype_generic& = &H0
Private Const resourcedisplaytype_group& = &H5
Private Const resourcedisplaytype_network& = &H6
Private Const resourcedisplaytype_root& = &H7
Private Const resourcedisplaytype_server& = &H2
Private Const resourcedisplaytype_share& = &H3
Private Const resourcedisplaytype_shareadmin& = &H8
Private Const resourcetype_any As Long = &H0&
Private Const resourcetype_disk As Long = &H1&
Private Const resourcetype_print As Long = &H2&
Private Const resourcetype_unknown As Long = &HFFFF&
Private Const resourceusage_all As Long = &H0&
Private Const resourceusage_connectable As Long = &H1&
Private Const resourceusage_container As Long = &H2&
Private Const resourceusage_reserved As Long = &H80000000
Private Const no_error = 0
Private Const error_more_data = 234 'l // dderror
Private Const resource_enum_all As Long = &HFFFFPrivate Type Netresource
       dwScope As Long
       dwType As Long
       dwdisplaytype As Long
       dwUsage As Long
       plocalname As Long
       premotename As Long
       pcomment As Long
       pprovider As Long
End TypePrivate Type Netresource_BUf
        dwScope As Long
        dwType As Long
        dwdisplaytype As Long
        dwUsage As Long
        slocalname As String
        sremotename As String
        scomment As String
        sprovider As String
End TypePrivate Declare Function WNetAddConnection Lib "mpr.dll" Alias "WNetAddConnectionA" (ByVal lpszNetPath As String, ByVal lpszPassword As String, ByVal lpszLocalName As String) As Long
Private Declare Function WNetOpenEnum Lib "mpr.dll" Alias "WNetOpenEnumA" (ByVal dwScope As Long, ByVal dwType As Long, ByVal dwUsage As Long, lpNetResource As Netresource, lphEnum As Long) As Long
Private Declare Function WNetEnumResource Lib "mpr.dll" Alias "WNetEnumResourceA" (ByVal hEnum As Long, lpcCount As Long, lpBuffer As Any, lpBufferSize As Long) As Long
Private Declare Function WNetCloseEnum Lib "mpr.dll" (ByVal hEnum As Long) As Long
Private Declare Function ValidateRgn Lib "user32" (ByVal hwnd As Long, ByVal hRgn As Long) As Long
Private Declare Sub copymem Lib "kernel32" Alias "rtlmovememory" (lpto As Any, lpfrom As Any, ByVal llen As Long)
Private Declare Sub copymembyptr Lib "kernel32" Alias "rtlmovememory" (ByVal lpto As Long, ByVal lpfrom As Long, ByVal llen As Long)
Private Declare Function lstrcpy Lib "kernel32" Alias "lstrcpya" (ByVal lpstring1 As String, ByVal lpstring2 As Any) As Long
Private Declare Function lstrlen Lib "kernel32" Alias "lstrlena" (ByVal lpstring As Any) As Long
Private Sub Form_Load()
On Error Resume Next
Const MAX_RESOURCES = 256
Const NOT_A_CONTAINER = -1
Dim bFirstTime As Boolean
Dim lReturn As Long
Dim hEnum As Long
Dim lCount As Long
Dim lMin As Long
Dim lLength As Long
Dim l As Long
Dim lBufferSize As Long
Dim lLastIndex As Long
Dim uNetApi(0 To MAX_RESOURCES) As Netresource
Dim uNet() As Netresource_BUf
bFirstTime = TrueDo
  If bFirstTime Then
     lReturn = WNetOpenEnum(resource_globalnet, resourcetype_any, resourceusage_all, uNetApi(0), hEnum)
     bFirstTime = False
     Else
         If uNet(lLastIndex).dwUsage And resourceusage_container Then
            lReturn = WNetOpenEnum(resource_globalnet, resourcetype_any, resourceusage_all, uNetApi(lLastIndex), hEnum)
            Else
               lReturn = NOT_A_CONTAINER
               hEnum = 0
         End If
     lLastIndex = lLastIndex + 1
  End If

  If lReturn = no_error Then
     lCount = resource_enum_all
     Do
       lBufferSize = UBound(uNetApi) * Len(uNetApi(0)) / 2
       lReturn = WNetEnumResource(hEnum, lCount, uNetApi(0), lBufferSize)
      If lCount > 0 Then
         ReDim Preserve uNet(0 To lMin + lCount - 1) As Netresource_BUf   '以前是netresourece
         For l = 0 To lCount - 1
             uNet(lMin + l).dwScope = uNetApi(l).dwScope
             uNet(lMin + l).dwType = uNetApi(l).dwType
             uNet(lMin + l).dwdisplaytype = uNetApi(l).dwdisplaytype
             uNet(lMin + l).dwUsage = uNetApi(l).dwUsage
             If uNetApi(l).plocalname Then
                lLength = lstrlen(uNetApi(l).plocalname)
                uNet(lMin + l).slocalname = Space$(lLength)
                copymem ByVal uNet(lMin + l).slocalname, ByVal uNetApi(l).plocalname, lLength
             End If

             If uNetApi(l).premotename Then
                lLength = lstrlen(uNetApi(l).premotename)
                uNet(lMin + l).sremotename = Space$(lLength)
                copymem ByVal uNet(lMin + l).sremotename, ByVal uNetApi(l).premotename, lLength
             End If
        Next l
      End If
      lMin = lMin + lCount
    Loop While lReturn = error_more_data
  End If
  If hEnum Then l = WNetCloseEnum(hEnum)
Loop While lLastIndex < lMin
If UBound(uNet) > 0 Then
   For l = 0 To UBound(uNet)
       If uNet(l).dwdisplaytype = resourcedisplaytype_server Then List1.AddItem uNet(l).sremotename
   Next l
End If
End Sub

调试易

vb 获取局域网内所有电脑名称及IP地址的代码及详解

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