Function on_pre_dialog_close_canceled 

pub fn on_pre_dialog_close_canceled(
    child: impl IntoUiNode,
    handler: Handler<DialogCloseCanceledArgs>,
) -> UiNode

P Dialogs must only close using DIALOG.respond.

Route

This event property uses the preview route, that is, the handler is called before the children widget handlers and before the $pn_ident handlers.