rem: QComboBox* cbx = (QComboBox*)aParamWidget; id = cbx->currentText();
add: QLineEdit* w = (QLineEdit*)aParamWidget; mTo = w->text();
context: void KMFilterActionIdentity::applyParamWidgetValue(QWidget* aParamWidget){  QComboBox* cbx = (QComboBox*)aParamWidget;  id = cbx->currentText();}