kshoji

                    if (GUILayout.Button("Start recording SMF") && isSequencerOpened)
                    {
                        var transmitters = new HashSet<ITransmitter>();
                        if (selectedInputDeviceId != null)
                        {
                            var transmitter = MidiSystem.GetTransmitter(selectedOutputDeviceId);
                            if (transmitter != null)
                            {
                                transmitters.Add(transmitter);
                            }