libvlc_event_manager_t * p_em = libvlc_media_discoverer_event_manager(mdis);
libvlc_event_attach(p_em, libvlc_MediaDiscovererStarted, HandleMediaDiscovererStarted, self);
libvlc_event_attach(p_em, libvlc_MediaDiscovererEnded, HandleMediaDiscovererEnded, self);
libvlc_event_manager_t * p_em = libvlc_media_discoverer_event_manager(mdis);
libvlc_event_attach(p_em, libvlc_MediaDiscovererStarted, HandleMediaDiscovererStarted, self);
libvlc_event_attach(p_em, libvlc_MediaDiscovererEnded, HandleMediaDiscovererEnded, self);