The following code fragment contains a function that reads the ntMixedDomain property of a domain and determines the operation mode:

HRESULT GetDomainMode(IADs *pDomain, BOOL *bIsMixed)
{
HRESULT hr = E_FAIL;
VARIANT var;
if (pDomain)
{
    VariantClear(&var);
 
    //Get the ntMixedDomain attribute
    LPOLESTR szAttribute = L"ntMixedDomain";
    hr = pDomain->Get(szAttribute,&var);
    if (SUCCEEDED(hr))
    {
 
        //Type should be VT_I4.
        if (var.vt==VT_I4)
        {
 
            //Zero means native mode.
            if (var.lVal == 0)
                *bIsMixed = FALSE;
 
            //One means mixed mode.
            else if (var.lVal == 1)
                *bIsMixed = TRUE;
            else
                hr=E_FAIL;
        }
    }
    VariantClear(&var);
}
return hr;
 
}

The script reads the ntMixedDomain property of a domain and determines the operation mode:

'Example: Detects if a domain is in mixed mode or native mode
 
Dim IADsRootDSE As IADs
Dim IADsDomain As IADs
 
On Error Resume Next
sComputer = InputBox("This script detects if a Windows 2000 domain is running in mixed or native mode." & vbCrLf & vbCrLf & "Specify the domain name or the name of a domain controller in the domain :")
 
sPrefix = "LDAP://" & sComputer & "/"
 
'''''''''''''''''''''''''''''''''''''''
'Bind to a ds server
'''''''''''''''''''''''''''''''''''''''
Set IADsRootDSE = GetObject(sPrefix & "rootDSE")
If (Err.Number <> 0) Then
   BailOnFailure Err.Number, "on GetObject method"
   Exit Sub
End If
sDomain = IADsRootDSE.Get("defaultNamingContext")
If (Err.Number <> 0) Then
   BailOnFailure Err.Number, "on Get method"
   Exit Sub
End If
Set IADsDomain = GetObject(sPrefix & sDomain)
If (Err.Number <> 0) Then
   BailOnFailure Err.Number, "on GetObject method"
   Exit Sub
End If
 
'''''''''''''''''''''''''''''''''''''''
'Get ntMixedDomain property
'''''''''''''''''''''''''''''''''''''''
sMode = IADsDomain.Get("ntMixedDomain")
If (Err.Number <> 0) Then
   BailOnFailure Err.Number, "on Get ntMixedDomain property"
   Exit Sub
End If
'''''''''''''''''''''''''''''''''''''''
'Get name property
'''''''''''''''''''''''''''''''''''''''
sName = IADsDomain.Get("name")
If (Err.Number <> 0) Then
   BailOnFailure Err.Number, "on Get name property"
   Exit Sub
End If
 
If (sMode = 0) Then
   sModeString = "Native"
ElseIf (sMode = 1) Then
   sModeString = "Mixed"
Else
   BailOnFailure sMode, "Invalid ntMixedDomain value: " & sMode
   Exit Sub
End If
 
 strText = "The domain " & sName & " is in " & sModeString & " mode."
 
MsgBox strText
'''''''''''''''''''''''''''''''''''''''
'Display subroutines
'''''''''''''''''''''''''''''''''''''''
Sub show_groups(strText, strName)
    MsgBox strText, vbInformation, "Groups on " & strName
End Sub
 
Sub BailOnFailure(ErrNum, ErrText)    strText = "Error 0x" & Hex(ErrNum) & " " & ErrText
    MsgBox strText, vbInformation, "ADSI Error"
    WScript.Quit
End Sub