winit-sonoma-fix/examples/request_redraw.rs

use instant::Instant;
use std::time::Duration;

use winit::{
    event::{Event, WindowEvent},
    event_loop::{ControlFlow, EventLoop},
    window::WindowBuilder,
};

fn main() {
    let event_loop = EventLoop::new();

    let window = WindowBuilder::new()
        .with_title("A fantastic window!")
        .build(&event_loop)
        .unwrap();

    event_loop.run(move |event, _, control_flow| match event {
        Event::WindowEvent {
            event: WindowEvent::CloseRequested,
            ..
        } => *control_flow = ControlFlow::Exit,
        Event::EventsCleared => {
            window.request_redraw();
            *control_flow = ControlFlow::WaitUntil(Instant::now() + Duration::new(1, 0))
        }
        Event::WindowEvent {
            event: WindowEvent::RedrawRequested,
            ..
        } => {
            println!("{:?}", event);
        }
        _ => (),
    });
}