openFrameworks MIDI recieve sample

main.cpp

#include "ofMain.h"
#include "ofApp.h"

int main( ){
    ofSetupOpenGL(1024, 768, OF_WINDOW);
    ofRunApp(new ofApp());
}

ofApp.cpp

#include "ofApp.h"

void ofApp::setup() {
    // MIDI Setup
    midiIn.listPorts();
    midiIn.openPort("Launchpad");
    midiIn.addListener(this);
}

void ofApp::newMidiMessage(ofxMidiMessage& msg) {
    std::cout << "status:"    << ofxMidiMessage::getStatusString(msg.status);
    std::cout << " channel:"  << msg.channel;
    std::cout << " pitch:"    << msg.pitch;
    std::cout << " velocity:" << msg.velocity;
    std::cout << " control:"  << msg.control;
    std::cout << " value:"    << msg.value;
    std::cout << " dt:"       << msg.deltatime;
    std::cout << std::endl;
}

ofApp.h

#pragma once

#include "ofMain.h"
#include "ofxMidi.h"

class ofApp : public ofBaseApp, public ofxMidiListener {
 public:
    void setup();

 private:
    ofxMidiIn midiIn;
    void newMidiMessage(ofxMidiMessage& msg);
};