1 #[cfg(not(target_arch = "wasm32"))]
main()2 fn main() {
3     use simple_logger::SimpleLogger;
4     use winit::{
5         event::{Event, WindowEvent},
6         event_loop::{ControlFlow, EventLoop},
7         window::WindowBuilder,
8     };
9 
10     #[derive(Debug, Clone, Copy)]
11     enum CustomEvent {
12         Timer,
13     }
14 
15     SimpleLogger::new().init().unwrap();
16     let event_loop = EventLoop::<CustomEvent>::with_user_event();
17 
18     let _window = WindowBuilder::new()
19         .with_title("A fantastic window!")
20         .build(&event_loop)
21         .unwrap();
22 
23     // `EventLoopProxy` allows you to dispatch custom events to the main Winit event
24     // loop from any thread.
25     let event_loop_proxy = event_loop.create_proxy();
26 
27     std::thread::spawn(move || {
28         // Wake up the `event_loop` once every second and dispatch a custom event
29         // from a different thread.
30         loop {
31             std::thread::sleep(std::time::Duration::from_secs(1));
32             event_loop_proxy.send_event(CustomEvent::Timer).ok();
33         }
34     });
35 
36     event_loop.run(move |event, _, control_flow| {
37         *control_flow = ControlFlow::Wait;
38 
39         match event {
40             Event::UserEvent(event) => println!("user event: {:?}", event),
41             Event::WindowEvent {
42                 event: WindowEvent::CloseRequested,
43                 ..
44             } => *control_flow = ControlFlow::Exit,
45             _ => (),
46         }
47     });
48 }
49 
50 #[cfg(target_arch = "wasm32")]
main()51 fn main() {
52     panic!("This example is not supported on web.");
53 }
54