Inheritance: IDisposable
 internal MidiDeviceInfo(RtMidiDevice manager, int id, int port, bool isInput)
 {
     this.manager = manager;
     this.id      = id;
     this.port    = port;
     is_input     = isInput;
 }
 internal MidiDeviceInfo(RtMidiDevice manager, int id, int port, bool isInput)
 {
     this.manager = manager;
     this.id = id;
     this.port = port;
     is_input = isInput;
 }