// .with_inner_size(dpi::PhysicalSize::new(WINDOW_WIDTH, WINDOW_HEIGHT));

    event_loop.run(move |event, elwt| match event {

    event_loop.run(move |mut event, elwt| match event {

            ref event,

            ref mut event,

                    }
                    WindowEvent::ScaleFactorChanged {
                        scale_factor,
                        ref mut inner_size_writer,
                    } => {
                        inner_size_writer
                            .request_inner_size(dpi::PhysicalSize::new(
                                WINDOW_WIDTH * *scale_factor as u32,
                                WINDOW_HEIGHT * *scale_factor as u32,
                            ))
                            .unwrap();