讀取使用者無法變更密碼 （WinNT 提供者）

用戶變更自己的密碼的能力是可以授與或拒絕的許可權。 若要判斷使用者是否已使用 WinNT 提供者授與此許可權，請閱讀用戶物件的 userFlags 屬性ADS_UF_PASSWD_CANT_CHANGE旗標。 ADS_UF_PASSWD_CANT_CHANGE旗標定義於 ADS_USER_FLAG_ENUM 列舉中。

範例程式碼

下列程式代碼範例示範如何取得用戶物件的 userFlags 屬性ADS_UF_PASSWD_CANT_CHANGE旗標。

Const ADS_UF_PASSWD_CANT_CHANGE = &H40

Function UserCannotChangePassword(strDomain As String, strUser As String, strUserCred As String, strPassword As String) As Boolean
    UserCannotChangePassword = False
    
    Dim oUser As IADs
    
    strPath = "WinNT://" + strDomain + "/" + strUser
    
    If "" <> strUserCred Then
        Dim dso As IADsOpenDSObject
        
        ' Bind to the group with the specified user name and password.
        Set dso = GetObject("WinNT:")
        Set oUser = dso.OpenDSObject(strPath, strUserCred, strPassword, 1)
    Else
        ' Bind to the group with the current credentials.
        Set oUser = GetObject(strPath)
    End If
    
    If (oUser.Get("userFlags") And ADS_UF_PASSWD_CANT_CHANGE) <> 0 Then
        UserCannotChangePassword = True
    Else
        UserCannotChangePassword = False
    End If
End Function

下列程式代碼範例示範如何取得用戶物件的 userFlags 屬性ADS_UF_PASSWD_CANT_CHANGE旗標。

//***************************************************************************
//
//  UserCannotChangePassword()
//
//***************************************************************************

HRESULT UserCannotChangePassword(LPCWSTR pwszDomain, 
                                 LPCWSTR pwszUser, 
                                 LPCWSTR pwszUserCred, 
                                 LPCWSTR pwszPassword, 
                                 BOOL *pfCannotChangePassword)
{
    if(NULL == pwszDomain || NULL == pwszUser)
    {
        return E_INVALIDARG;
    }
    
    *pfCannotChangePassword = FALSE;

    HRESULT hr;
    IADs *pads;

    CComBSTR sbstrADsPath = L"WinNT://";
    sbstrADsPath += pwszDomain;
    sbstrADsPath += "/";
    sbstrADsPath += pwszUser;

    hr = ADsOpenObject( sbstrADsPath,
                        pwszUserCred,
                        pwszPassword,
                        ADS_SECURE_AUTHENTICATION,
                        IID_IADs, 
                        (void**)&pads);

    if(SUCCEEDED(hr))
    {
        CComVariant svar;
        
        hr = pads->Get(CComBSTR("userFlags"), &svar);
        if(SUCCEEDED(hr))
        {
            if(ADS_UF_PASSWD_CANT_CHANGE & svar.lVal)
            {
                *pfCannotChangePassword = TRUE;
            }
            else
            {
                *pfCannotChangePassword = FALSE;
            }
        }
        
        pads->Release();
    }

    return hr;
}