netripper

    public class MyMessageWindow : MessageWindow
    {
        private FMTest fmtest = null;

        public MyMessageWindow(FMTest fmtest)
        {
            this.fmtest = fmtest;
        }

        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);

            if (m.Msg == GFMAPI.WM_FMNOTIFICATION)
            {
                // m.WParam holds the IntPtr to FMDevice in case you're writing a multi-device application
                fmtest.ReceivedNotification();
            }
        }
    }

    public class FMTest : IDisposable
    {
        private IntPtr FMDevice = IntPtr.Zero;

        public void Init()
        {
            FMDevice = GFMAPI.FMOpen(0);
            GFMAPI.FMRegisterNotification(FMDevice, new MyMessageWindow(this).Hwnd, GFMAPI.WM_FMNOTIFICATION);
        }

        public void ReceivedNotification()
        {
            TagFM_NOTIFICATION notification;
            GFMAPI.FMGetNotification(FMDevice, out notification);
        }

        public void Dispose()
        {
            if (FMDevice != IntPtr.Zero)
            {
                GFMAPI.FMClose(FMDevice);
                FMDevice = IntPtr.Zero;
            }
        }
    }