winit-sonoma-fix/examples/transparent.rs

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

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

    let window = WindowBuilder::new().with_decorations(false)
                                                 .with_transparency(true)
                                                 .build(&event_loop).unwrap();

    window.set_title("A fantastic window!");

    event_loop.run(move |event, _, control_flow| {
        println!("{:?}", event);

        match event {
            Event::WindowEvent { event: WindowEvent::CloseRequested, .. } =>
                *control_flow = ControlFlow::Exit,
            _ => *control_flow = ControlFlow::Wait,
        }
    });
}