pub fn on_access_expander(
child: impl IntoUiNode,
handler: Box<dyn FnMut(&AccessExpanderArgs) -> HandlerResult + Send>,
) -> UiNodeExpand description
P Access requested to expand or collapse the widget content.
§Preview
You can preview this event using on_pre_access_expander.
Otherwise the handler is only called after the widget content has a chance to stop propagation.
§Async
You can use async event handlers with this property.