use winit::event_loop::EventLoop; fn main() { simple_logger::init().unwrap(); let event_loop = EventLoop::new(); let monitor = match event_loop.primary_monitor() { Some(monitor) => monitor, None => { println!("No primary monitor detected."); return; } }; println!("Listing available video modes:"); for mode in monitor.video_modes() { println!("{}", mode); } }