Prado\Web\UI\ActiveControls\TActivePageAdapter::getCallbackEventParameter PHP 메소드

    public function getCallbackEventParameter()
    {
        if ($this->_callbackEventParameter === null) {
            $param = $this->getRequest()->itemAt(TPage::FIELD_CALLBACK_PARAMETER);
            $this->_callbackEventParameter = $param;
        }
        return $this->_callbackEventParameter;
    }