/// <summary>
        /// Create the window
        /// </summary>
        public MainWindow()
        {
            // Create a new window and apply the necessary properties
            this.Height = SystemMetrics.ScreenHeight;
            this.Width = SystemMetrics.ScreenWidth;
            this.Background = new SolidColorBrush(Colors.Black);

            // Create a new stack panel, set margins, and bind it to the window
            Stack = new StackPanel(Orientation.Vertical);
            this.Child = Stack;

            GPS = new MicroGPS("COM1", 9600);
            GPS.GPSUpdate += new GPSUpdateDelegate(GPS_GPSUpdate);

            InitLabel(ref Fix, "Waiting for GPS data");
            InitLabel(ref Lat, "Lat: --");
            InitLabel(ref Lon, "Lon: --");

            this.Visibility = Visibility.Visible;
        }

        void  GPS_GPSUpdate(RMCOutput rmc)
        {
            this.RootUIElement.Dispatcher.Invoke(new TimeSpan(0, 0, 0), DoUIGPSUpdate, rmc);
        }

        private void DoUIGPSUpdate(RMCOutput rmc)
        {
            switch (rmc.Fix)
            {
                case FixType.Active:
                    Fix.TextContent = "Fix Active";
                    break;

                case FixType.Unknown:
                case FixType.Void:
                    Fix.TextContent = "No Fix";
                    break;
            }

            Lat.TextContent = "Lat: " + rmc.Coords.Latitude.ToString();
            Lat.TextContent = "Lon: " + rmc.Coords.Longitude.ToString();
        }