我需要刷新 Window 的无线网络列表。
我很乐意接受任何我可以直接或间接从 VBA 自动化（cmdline、wmi 等）的解决方法。（我使用的是 Windows 7 Home 64 位和 Office 365 Pro 64 位。）
我可以通过编程方式列出网络netsh，包括 或下面的代码，但除非我物理单击任务栏通知区域上的网络连接图标，否则列表不会刷新。
- 正如某些文档所述，该列表不会每60 秒自动更新一次。
- 断开连接+重新连接 NIC不是可行/可持续的选择。
我想我没有按要求从WlanOpenHandle获得句柄，而且我很擅长将 C 转换为 VBA。
没有错误，但 WlanScan 返回未知代码1168。
- 我在这里改编自 VB 版本：wlanscan (wlanapi)
- MSDN 文档：WlanScan 函数
相关位：
这是 的函数声明VB，已改编：
Public Shared Function WlanScan(ByVal hClientHandle As IntPtr, _
ByRef pInterfaceGuid As Guid, ByVal pDot11Ssid As IntPtr, _
ByVal pIeData As IntPtr, ByVal pReserved As IntPtr) As UInteger
End Function
...以及函数用法C#示例：
Guid g;
//wlanHndl is the handle returned previously by calling [WlanOpenHandle]
for (int i = 0; i < infoList.dwNumberOfItems; i++)
{
g = infoList.InterfaceInfo[i].InterfaceGuid;
uint resultCode=WlanScan(wlanHndl, ref g, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
if (resultCode != 0)
return;
}
...以及如何打开手柄，在C++（从这里）：
dwResult = WlanOpenHandle(dwMaxClient, NULL, &dwCurVersion, &hClient);
if (dwResult != ERROR_SUCCESS) {
wprintf(L"WlanOpenHandle failed with error: %u\n", dwResult);
return 1;
// You can use FormatMessage here to find out why the function failed
}
“未隐藏：”
获取（缓存）无线网络列表：
列出网络的代码效果很好- 除了不自己刷新。（以前我正在解析 的文本输出netsh wlan show networks mode=bssid，它有同样的问题。）
我之前删除了这个部分，因为它很长，而且除了刷新之外似乎工作正常。-)
Option Explicit 'section's source: vbforums.com/showthread.php?632731
Private Const DOT11_SSID_MAX_LENGTH As Long = 32
Private Const WLAN_MAX_PHY_TYPE_NUMBER As Long = 8
Private Const WLAN_AVAILABLE_NETWORK_CONNECTED As Long = 1
Private Const WLAN_AVAILABLE_NETWORK_HAS_PROFILE As Long = 2
Private Type GUID 'from cpearson.com
Data1 As Long: Data2 As Integer: Data3 As Integer: Data4(7) As Byte
End Type
Private Type WLAN_INTERFACE_INFO
ifGuid As GUID: InterfaceDescription(255) As Byte: IsState As Long
End Type
Private Type DOT11_SSID
uSSIDLength As Long: ucSSID(DOT11_SSID_MAX_LENGTH - 1) As Byte
End Type
Private Type WLAN_AVAILABLE_NETWORK
strProfileName(511) As Byte: dot11Ssid As DOT11_SSID
dot11BssType As Long: uNumberOfBssids As Long
bNetworkConnectable As Long: wlanNotConnectableReason As Long
uNumberOfPhyTypes As Long: dot11PhyTypes(WLAN_MAX_PHY_TYPE_NUMBER - 1) As Long
bMorePhyTypes As Long: wlanSignalQuality As Long
bSEcurityEnabled As Long: dot11DefaultAuthAlgorithm As Long
dot11DefaultCipherAlgorithm As Long: dwflags As Long: dwReserved As Long
End Type
Private Type WLAN_INTERFACE_INFO_LIST
dwNumberOfItems As Long: dwIndex As Long: InterfaceInfo As WLAN_INTERFACE_INFO
End Type
Private Type WLAN_AVAILABLE_NETWORK_LIST
dwNumberOfItems As Long: dwIndex As Long: Network As WLAN_AVAILABLE_NETWORK
End Type
Declare PtrSafe Function WlanOpenHandle Lib "Wlanapi.dll" (ByVal dwClientVersion As Long, _
ByVal pdwReserved As Long, ByRef pdwNegotiaitedVersion As Long, _
ByRef phClientHandle As Long) As Long
Declare PtrSafe Function WlanEnumInterfaces Lib "Wlanapi.dll" (ByVal hClientHandle As Long, _
ByVal pReserved As Long, ppInterfaceList As Long) As Long
Declare PtrSafe Function WlanGetAvailableNetworkList Lib "Wlanapi.dll" ( _
ByVal hClientHandle As Long, pInterfaceGuid As GUID, ByVal dwflags As Long, _
ByVal pReserved As Long, ppAvailableNetworkList As Long) As Long
Declare PtrSafe Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, _
Source As Any, ByVal Length As Long)
Declare PtrSafe Sub WlanFreeMemory Lib "Wlanapi.dll" (ByVal pMemory As Long)
Type WiFis
ssid As String: signal As Single
End Type
Public Function GetWiFi() As WiFis()
'returns an array of custom type WiFis (1st interface only)
Dim udtList As WLAN_INTERFACE_INFO_LIST, udtAvailList As WLAN_AVAILABLE_NETWORK_LIST, udtNetwork As WLAN_AVAILABLE_NETWORK
Dim lngReturn As Long, lngHandle As Long, lngVersion As Long, lngList As Long, lngAvailable As Long
Dim lngStart As Long, intCount As Integer, ssid As String, signal As Single, wifiOut() As WiFis
n = 0
lngReturn = WlanOpenHandle(2&, 0&, lngVersion, lngHandle) 'get handle
If lngReturn <> 0 Then
Debug.Print "Couldn't get wlan handle (Code " & lngReturn & ")"
Exit Function
End If
lngReturn = WlanEnumInterfaces(ByVal lngHandle, 0&, lngList) 'enumerate <*first interface only*>
CopyMemory udtList, ByVal lngList, Len(udtList)
lngReturn = WlanGetAvailableNetworkList(lngHandle, udtList.InterfaceInfo.ifGuid, 2&, 0&, lngAvailable) 'get network list
CopyMemory udtAvailList, ByVal lngAvailable, LenB(udtAvailList)
intCount = 0
lngStart = lngAvailable + 8
Do
CopyMemory udtNetwork, ByVal lngStart, Len(udtNetwork) ' Populate avail. network structure
ssid = Replace(StrConv(udtNetwork.dot11Ssid.ucSSID, vbUnicode), Chr(0), "")
If Len(ssid) < 4 Then ssid = "(Unnamed)"
signal = CSng(udtNetwork.wlanSignalQuality) / 100
'[Signal] = 0 to 100 which represents the signal strength (100 Signal)=(-100dBm RSSI), (100 Signal)=(-50dBm RSSI)
If udtNetwork.dwflags = 0 Then
n = n + 1
ReDim Preserve wifiOut(n)
wifiOut(n).ssid = ssid
wifiOut(n).signal = signal
Else
'skipping networks with [dwflags] > 0
'I *think* that's what I'm supposed to do
'Returns 3 for currently connected network, 2 for networks that have profiles
End If
intCount = intCount + 1
lngStart = lngStart + Len(udtNetwork)
Loop Until intCount = udtAvailList.dwNumberOfItems
WlanFreeMemory lngAvailable 'clean up memory
WlanFreeMemory lngList
GetWiFi = wifiOut 'Success! (function is populated with cached network list)
End Function
...以及问题：
使用刷新网络列表
WlanScan？
这不会产生VBA 错误，但会返回代码1168（我无法识别）/（源代码）
'Added blindly:'wlanui type library (wlanui.dll) and "wlan pref iua" (wlanconn.dll)
Public Type DOT11_SSID
uSSIDLength As LongPtr: ucSSID As String
End Type
Private Type GUID 'from cpearson.com/excel/CreateGUID.aspx
Data1 As LongPtr: Data2 As Integer
Data3 As Integer: Data4(0 To 7) As Byte
End Type
#If Win64 Then 'also new to Office-64bit, but seems okay
Declare PtrSafe Function WlanScan Lib "Wlanapi.dll" _
(ByVal hClientHandle As LongPtr, ByRef pInterfaceGuid As GUID, _
ByVal pDot11Ssid As LongPtr, ByVal pIeData As LongPtr, _
ByVal pReserved As LongPtr) As LongPtr
#Else
Private Declare WlanScan Lib "Wlanapi.dll" _
(ByVal hClientHandle As LongPtr, ByRef pInterfaceGuid As GUID, _
ByVal pDot11Ssid As LongPtr, ByVal pIeData As LongPtr, _
ByVal pReserved As LongPtr) As LongPtr
#End If
Sub test_RefreshNetworkList()
Dim hresult As LongPtr, phClientHandle As Long, pdwNegotiatedVersion As Long
Dim retVal As Longptr, g As GUID
hresult = WlanOpenHandle(2&, 0&, pdwNegotiatedVersion, phClientHandle)
retVal = WlanScan(phClientHandle, g, 0, 0, 0)
Select Case retVal
Case 87: Debug.Print "ERROR_INVALID_PARAMETER"
Case 6: Debug.Print "ERROR_INVALID_HANDLE"
Case 8: Debug.Print "ERROR_NOT_ENOUGH_MEMORY"
Case Else: Debug.Print "RPC_STATUS : " & retVal ' "misc errors"
End Select
End Sub
当然有一种迂回的方法可以从 VBA 刷新网络列表？我很喜欢可以自动化的变通办法……什么？！
谢谢！
编辑：
我改为Long在LongPtr适用的（我认为）位置。同样的错误。
这是WlanOpenHandle和WlanScan定义。
Declare PtrSafe Function WlanOpenHandle Lib "Wlanapi.dll"
(ByVal dwClientVersion As LongPtr, _
ByVal pdwReserved As LongPtr,
ByRef pdwNegotiaitedVersion As LongPtr, _
ByRef phClientHandle As LongPtr ) As LongPtr
（...这也是我第一次尝试使用编译器常量。）
#If Win64 Then
Declare PtrSafe Function WlanScan Lib "Wlanapi.dll" _
(ByVal hClientHandle As LongPtr,
ByRef pInterfaceGuid As GUID, _
ByVal pDot11Ssid As LongPtr,
ByVal pIeData As LongPtr, _
ByVal pReserved As LongPtr) As LongPtr
#Else
Private Declare WlanScan Lib "Wlanapi.dll" _
(ByVal hClientHandle As LongPtr,
ByRef pInterfaceGuid As GUID, _
ByVal pDot11Ssid As LongPtr,
ByVal pIeData As LongPtr, _
ByVal pReserved As LongPtr ) As LongPtr
#End If