Detect route table change

[jerry28]

I have written some VBScript (.vbs) to detect routing table changes on the local computer that I want to use in a VB6 exe project.

The VBScript code is below and I have confirmed that it is working:

strComputer = "."
 
Set SINK = WScript.CreateObject("WbemScripting.SWbemSink","SINK_")
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2") 
objWMIService.ExecNotificationQueryAsync SINK, "SELECT * FROM Win32_IP4RouteTableEvent"
  
Wscript.Echo "Waiting for routing table change..."
 
Do
   WScript.Sleep 1000
Loop
 
 
Sub SINK_OnObjectReady(objLatestEvent, objAsyncContext)
 
    WScript.Echo "Routing table changed"
 
End Sub

Now this is the VB6 code below. Everything from the VBScript has just been moved into the form code. The program never reacts to a routing table change and the msgbox is never displayed. I cannot figure out why this is not working. Would appreciate any help. Thanks

Option Explicit
Dim SINK
Dim objWMIService
 
Private Sub Form_Load()
    Dim strComputer
    
    strComputer = "."
    
    Set SINK = CreateObject("WbemScripting.SWbemSink")
    Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")
    objWMIService.ExecNotificationQueryAsync SINK, "SELECT * FROM Win32_IP4RouteTableEvent"
End Sub
 
 
Public Sub SINK_OnObjectReady(objLatestEvent, objAsyncContext)
    MsgBox ("Routing table changed")
End Sub