    AKOpenNIUserGenerator* thisCookie = static_cast<AKOpenNIUserGenerator*>(pCookie);
    
    char * buffer = new char[128];
	sprintf(buffer, "Starting calibration of user %i", nID);
    thisCookie->dispatchInfoMessage((const uint8_t *)buffer);
    delete buffer;
}

void XN_CALLBACK_TYPE _calibrationCompleteCallback(xn::SkeletonCapability& rCapability, XnUserID nID, XnCalibrationStatus calibrationError, void* pCookie)