About `eframe::App::on_close_event`

[ssrlive]

In older versions of eframe, there was a eframe::App::on_close_event method:

impl eframe::App for AppUI {

    fn on_close_event(&mut self) -> bool {
        self.state.on_show_confirm_quit_dialog();
        self.state.is_allowed_to_quit()
    }

    fn on_exit(&mut self, _gl: Option<&eframe::glow::Context>) {
        log::info!("on_exit");
    }
    
    // ...
}

I used it to intercept the user's click on the X button and decide whether to actually exit the app.

However, this method has been removed in newer versions.

Now, how can I achieve my original goal?