Async winit

Cargo.toml

[package]
name = "window"
version = "0.1.0"
edition = "2021"

[dependencies]
winit = "0.28.1"
async-std = "1.10.0"

main.rs

use std::time::Duration;
use async_std::task;
use winit::{event_loop::{EventLoop, ControlFlow}, window::WindowBuilder};

async fn run(event_loop: EventLoop<()>) {
    let _window = WindowBuilder::new().build(&event_loop).unwrap();
    event_loop.run(move |_event, _, control_flow| {
        *control_flow = ControlFlow::Wait;
        task::spawn(async move {
            let result = calculate_async().await;
            println!("Result of async function: {}", result);
        });
    });
}

async fn calculate_async() -> i32 {
    task::sleep(Duration::from_secs(1)).await;
    42
}

fn main() {
    task::block_on(run(EventLoop::new()));
}