CC_CALLBACK_functions2.cpp

void HelloWorld::registerControllerListener()
{
    //create an evnetListenerController
    _listener = EventListenerController::create();

    //bind onConneected event call function
    _listener->onConnected = CC_CALLBACK_2(HelloWorld::onConnectController,this);

    //bind disconnect event call function
        _listener->onDisconnected = CC_CALLBACK_2(HelloWorld::onDisconnectedController,this);

        //bind onKeyDown event call function        
        _listener->onKeyDown = CC_CALLBACK_3(HelloWorld::onKeyDown, this);

        //bind onKeyUp event call function   
        _listener->onKeyUp = CC_CALLBACK_3(HelloWorld::onKeyUp, this);

        //bind onAxis event call function, onAxis will be called when analog stick is changed
        _listener->onAxisEvent = CC_CALLBACK_3(HelloWorld::onAxisEvent, this);

    //Activate the listener into the event dispatcher
        _eventDispatcher->addEventListenerWithSceneGraphPriority(_listener, this);

    //This function should be called for iOS platform
    Controller::startDiscoveryController();
}

//Controller is the obejects of the Controller，keyCode means the keycode of the controller you click down
void HelloWorld::onKeyDown(cocos2d::Controller *controller, int keyCode, cocos2d::Event *event)
{
    CCLOG("KeyDown:%d", keyCode);
}   

void HelloWorld::onKeyUp(cocos2d::Controller *controller, int keyCode, cocos2d::Event *event)
{
    //You can get the controller by tag, deviceId or devicename if there are multiple controllers
    CCLOG("tag:%d DeviceId:%d DeviceName:%s", controller->getTag(), controller->getDeviceId(), controller->getDeviceName().c_str());
    CCLOG("KeyUp:%d", keyCode);
}

//The axis includes X-axis and Y-axis and its range is from -1 to 1. X-axis is start from left to right and Y-axis is bottom to top.
void HelloWorld::onAxisEvent(cocos2d::Controller* controller, int keyCode, cocos2d::Event* event)
{
    const auto& keyStatus = controller->getKeyStatus(keyCode);
    CCLOG("Axis KeyCode:%d Axis Value:%f", keyCode, keyStatus.value);
}   

void HelloWorld::onConnectController(Controller* controller, Event* event)
{           
    CCLOG("Game controller connected");
}

void HelloWorld::onDisconnectedController(Controller* controller, Event* event)
{
    CCLOG("Game controller disconnected");
}

bool HelloWorld::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !Layer::init() )
    {
        return false;
    }       
    ......
    ......          
     registerControllerListener();

    return true;
}