Add platform::desktop module with EventLoopExt::run_return

examples/run_return.rs

@@ -0,0 +1,41 @@
+extern crate winit;
+use winit::platform::desktop::EventLoopExtDesktop;
+
+fn main() {
+    let mut events_loop = winit::EventLoop::new();
+
+    let window = winit::WindowBuilder::new()
+        .with_title("A fantastic window!")
+        .build(&events_loop)
+        .unwrap();
+
+    println!("Close the window to continue.");
+    events_loop.run_return(|event, _, control_flow| {
+        match event {
+            winit::Event::WindowEvent {
+                event: winit::WindowEvent::CloseRequested,
+                ..
+            } => *control_flow = winit::ControlFlow::Exit,
+            _ => *control_flow = winit::ControlFlow::Wait,
+        }
+    });
+    drop(window);
+
+    let _window_2 = winit::WindowBuilder::new()
+        .with_title("A second, fantasticer window!")
+        .build(&events_loop)
+        .unwrap();
+
+    println!("Wa ha ha! You thought that closing the window would finish this?!");
+    events_loop.run_return(|event, _, control_flow| {
+        match event {
+            winit::Event::WindowEvent {
+                event: winit::WindowEvent::CloseRequested,
+                ..
+            } => *control_flow = winit::ControlFlow::Exit,
+            _ => *control_flow = winit::ControlFlow::Wait,
+        }
+    });
+
+    println!("Okay we're done now for real.");
+}