Add ability to send custom user events

examples/proxy.rs

@@ -1,9 +1,10 @@
 extern crate winit;
+use winit::{EventLoop, WindowBuilder};
 
 fn main() {
-    let events_loop = winit::EventLoop::new();
+    let events_loop: EventLoop<i32> = EventLoop::new_user_event();
 
-    let _window = winit::WindowBuilder::new()
+    let _window = WindowBuilder::new()
         .with_title("A fantastic window!")
         .build(&events_loop)
         .unwrap();
@@ -11,10 +12,12 @@ fn main() {
     let proxy = events_loop.create_proxy();
 
     std::thread::spawn(move || {
+        let mut counter = 0;
         // Wake up the `events_loop` once every second.
         loop {
             std::thread::sleep(std::time::Duration::from_secs(1));
-            proxy.wakeup().unwrap();
+            proxy.send_event(counter).unwrap();
+            counter += 1;
         }
     });
 
@@ -22,7 +25,7 @@ fn main() {
         println!("{:?}", event);
         match event {
             winit::Event::WindowEvent { event: winit::WindowEvent::CloseRequested, .. } =>
-                *control_flow = winit::ControlFlow::Wait,
+                *control_flow = winit::ControlFlow::Exit,
             _ => *control_flow = winit::ControlFlow::Wait,
         }
     });