event_handler_h handler;
// Register the event handler
-int ret = event_add_event_handler(&handler, SYSTEM_EVENT_BATTERY_LEVEL_STATUS,
- (event_cb)battery_event_cb, user_data);
+int ret = event_add_event_handler(SYSTEM_EVENT_BATTERY_LEVEL_STATUS,
+ (event_cb)battery_event_cb, user_data, &handler);
if (ret != EVENT_ERROR_NONE)
dlog_print(DLOG_ERROR, LOG_TAG, "err: [%d]", ret);
</pre>