Function on_blocked_changed 

pub fn on_blocked_changed(
    child: impl IntoUiNode,
    handler: Box<dyn FnMut(&bool) -> HandlerResult + Send>,
) -> UiNode

Widget interactions where blocked or unblocked.

Note that blocked widgets may still be visually enabled, see Interactivity for more details.

See on_interactivity_changed for a more general interactivity event.

Route

This event property uses a direct route, that is, it cannot be intercepted in parent widgets.