The message payload data

message: Efl.Loop_Message;

EFL_LOOP_MESSAGE_EVENT_MESSAGE(Efl_Loop_Message *)

static void
on_efl_loop_message_event_message(void *data, const Efl_Event *event)
{
    Efl_Loop_Message *info = event->info;
    Eo *obj = event->object;
    Data *d = data;
 
    /* event hander code */
}
 
static void
setup_event_handler(Eo *obj, Data *d)
{
    efl_event_callback_add(obj, EFL_LOOP_MESSAGE_EVENT_MESSAGE, on_efl_loop_message_event_message, d);
}