public static void SuppressSIP()
        {
            var hWnd = PInvoke.FindWindow("SIPWndClass", null);

            if (hWnd == IntPtr.Zero)
            {
                return;
            }
            var flags = (PInvoke.WindowStyles)PInvoke.GetWindowLong(hWnd, -16 /*GWL_STYLE*/);

            if ((flags & PInvoke.WindowStyles.WS_VISIBLE) == 0)
            {
                return; // not visible
            }
            var hWndButton = PInvoke.FindWindow("MS_SIPBUTTON", "MS_SIPBUTTON");

            if (hWndButton == IntPtr.Zero)
            {
                return; // no button!
            }
            PInvoke.SipShowIM(PInvoke.SIPF.SIPF_OFF);
            //Click(hWndButton, null);

            flags = (PInvoke.WindowStyles)PInvoke.GetWindowLong(hWnd, -16 /*GWL_STYLE*/);
            if ((flags & PInvoke.WindowStyles.WS_VISIBLE) != 0)
            {
                Console.WriteLine("oops");
            }
        }