actionscript 3 - deactivate sound in as3 when the game terminates or loses focus -


i trying deactivate sound of application when user terminates or close application, have used event listener:

stage.addeventlistener(event.deactivate, ondeactivate);//error  private function ondeactivate(e:event) {             _channel.stop(); }

but not working:

error:access of undefined property deactivate -1119: access of possibly undefined property deactivate through reference static type class.

sugessions please.


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