// create PenController instance.
// PenController control all pen event method
PenController _controller = new PenController();

// Create BluetoothPenClient instance. and bind PenController.
// BluetoothPenClient is implementation of bluetooth function.
BluetoothPenClient _client = new BluetoothPenClient(_controller);

List<PenInformation> penList = await _client.FindDevices();

// bluetooth watcher event
_client.onAddPenController += MClient_onAddPenController;
_client.onRemovePenController += MClient_onRemovePenController;
_client.onStopSearch += MClient_onStopSearch;
_client.onUpdatePenController += MClient_onUpdatePenController;

// start watcher
_client.StartWatcher();

// Event that is called when a device is added by the watcher
private async void MClient_onAddPenController(BluetoothPenClient sender, PenInformation args)
{

}

// Event that is called when a device is updated 
private async void MClient_onUpdatePenController(BluetoothPenClient sender, PenUpdateInformation args)
{

}

// Event that is called when a device is removed
private async void MClient_onRemovePenController(BluetoothPenClient sender, PenUpdateInformation args)
{

}

// Event that is called when the watcher operation has been stopped
private async void MClient_onStopSearch(BluetoothPenClient sender, Windows.Devices.Bluetooth.BluetoothError args)
{

}

// penInfomation is PenInformation class object what can be obtained from find device method
bool result = await _client.Connect(penInfomation);

// add event in init method
_controller.Connected += MController_Connected;
_controller.PasswordRequested += MController_PasswordRequested;
_controller.Authenticated += MController_Authenticated;

// It is called when connection is established ( You cannot use function on your device without authentication )
private void MController_Connected(IPenClient sender, ConnectedEventArgs args)
{
	System.Diagnostics.Debug.WriteLine(String.Format("Mac : {0}\r\n\r\nName : {1}\r\n\r\nSubName : {2}\r\n\r\nFirmware Version : {3}\r\n\r\nProtocol Version : {4}", args.MacAddress, args.DeviceName, args.SubName, args.FirmwareVersion, args.ProtocolVersion));
}

// If your device is locked, it is called to input password.
private void MController_PasswordRequested(IPenClient sender, PasswordRequestedEventArgs args)
{
	System.Diagnostics.Debug.WriteLine($"Retry Count : {args.RetryCount}, ResetCount :  {args.ResetCount }");
    _controller.InputPassword(password);
}

// If your pen is not locked, or authentication is passed, it will be called.
// When it is called, You can use all function on your device.
private void MController_Authenticated(IPenClient sender, object args)
{

}

// add event in init method
_controller.DotReceived += MController_DotReceived;

// Identifier of note(paper) (it is consist of section and owner, note)
int section = 1;
int owner = 1;
int note = 102;

// Requests to set your note type.
_controller.AddAvailableNote(section, owner, note);

// event that is called when writing data is received
private void MController_DotReceived(IPenClient sender, DotReceivedEventArgs args)
{
// TODO : You should implements code using coordinate data.
}

// add event in init method
_controller.OfflineDataListReceived += MController_OfflineDataListReceived;


// Request offline data list
_controller.RequestOfflineDataList();

// Event method to receive offline data list
private void MController_OfflineDataListReceived(IPenClient sender, OfflineDataListReceivedEventArgs args)
{

}

// add event in init method
_controller.OfflineDataDownloadStarted += MController_OfflineDataDownloadStarted;
_controller.OfflineStrokeReceived += MController_OfflineStrokeReceived;
_controller.OfflineDownloadFinished += MController_OfflineDownloadFinished;

// it is invoked when begins downloading offline data
private async void MController_OfflineDataDownloadStarted(IPenClient sender, object args)
{

}

// it is invoked when it obtained offline data ( it can be called several times )
private async void MController_OfflineStrokeReceived(IPenClient sender, OfflineStrokeReceivedEventArgs args)
{

}

// it is invoked when finished downloading
private async void MController_OfflineDownloadFinished(IPenClient sender, SimpleResultEventArgs args)
{

}