how to get is effect playing in c2dx-1.0.1-x-0.10.0?

hello there, i want to get is effect playing like SimpleAudioEngine::isBackgroundMusicPlaying().

i checked a previous post, http://www.cocos2d-x.org/boards/6/topics/4428?r=4436#message-4436

it seems can not work in c2dx-1.0.1.

thanks a lot.

dan

No, we don’t offer a function like isEffectPlaying.
Because effect is always short, and it has no meaning to have this function.

i have three effects, and i want to play one by one, how should i get this?