// Performs clean-up tasks on platforms where we can detect that the last
// client has detached

void AttachListener::detachall() {

  {- -------------------------------------------
  (1) AttachListener::pd_detachall() を呼んで
      プラットフォーム固有のクリーンアップ処理を行う.
      ---------------------------------------- -}

      // call the platform dependent clean-up
      pd_detachall();
    }