[ComImport, Guid(IIDGuid.IWiaDevMgr2)]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IWiaDevMgr2
    {
    [return: MarshalAs(UnmanagedType.Interface)]
    object EnumDeviceInfo(
        [In] int lFlag,
        [Out, MarshalAs(UnmanagedType.Interface)] out object iIEnum);

    void CreateDevice(
        [In] int lFlags,
        [In, MarshalAs(UnmanagedType.BStr)] string strDeviceId,
        [Out, MarshalAs(UnmanagedType.Interface)] out IWiaItem iWiaItemRoot2);

    [return: MarshalAs(UnmanagedType.Interface)]
    object SelectDeviceDlg(
        [In] IntPtr hwndParent,
        [In] int lDeviceType,
        [In] int lFlags,
        [In, Out, MarshalAs(UnmanagedType.BStr)] ref string strDeviceID,
        [Out, MarshalAs(UnmanagedType.Interface)] out IWiaItem iWiaItemRoot2);

    [return: MarshalAs(UnmanagedType.BStr)]
    string SelectDeviceDlgID(
        [In] IntPtr hwndParent,
        [In] int lDeviceType,
        [In] int lFlags,
        [Out, MarshalAs(UnmanagedType.BStr)] string strDeviceId);

    void GetImageDlg(
        [In] int lFlags,
        [In, MarshalAs(UnmanagedType.BStr)] string strDeviceId,
        [In] IntPtr hwndParent,
        [In, MarshalAs(UnmanagedType.BStr)] string strFolderName,
        [In, MarshalAs(UnmanagedType.BStr)] string strFileName,
        [In] int lNumFiles,
        [In, MarshalAs(UnmanagedType.BStr)] string strFName,
        [Out, MarshalAs(UnmanagedType.Interface)] out object iItemRoot);

    void RegisterEventCallbackProgram(
        [In] int lFlags,
        [In, MarshalAs(UnmanagedType.BStr)] string strDeviceId,
        [In] ref Guid eventGuid,
        [In, MarshalAs(UnmanagedType.BStr)] string strFullAppName,
        [In, MarshalAs(UnmanagedType.BStr)] string strCommandline,
        [In, MarshalAs(UnmanagedType.BStr)] string strName,
        [In, MarshalAs(UnmanagedType.BStr)] string strDescription,
        [In, MarshalAs(UnmanagedType.BStr)] string strIcon);

    void RegisterEventCallbackInterface(
        [In] int lFlags,
        [In, MarshalAs(UnmanagedType.BStr)] string strDeviceId,
        [In] ref Guid eventGuid,
        [In, MarshalAs(UnmanagedType.Interface)] object wiaEventCallbackInterface,
        [Out, MarshalAs(UnmanagedType.IUnknown)] out object eventObjectIUnknown);

    void RegisterEventCallbackCLSID(
        [In] int lFlags,
        [In, MarshalAs(UnmanagedType.BStr)] string strDeviceId,
        [In] ref Guid eventGuid,
        [In] ref Guid clsid,
        [In, MarshalAs(UnmanagedType.BStr)] string strName,
        [In, MarshalAs(UnmanagedType.BStr)] string strDescription,
        [In, MarshalAs(UnmanagedType.BStr)] string strIcon);

    }