Fix examples to have an exit code

examples/control_flow.rs

@@ -88,7 +88,7 @@ fn main() {
                     window.request_redraw();
                 }
                 if close_requested {
-                    *control_flow = ControlFlow::Exit;
+                    *control_flow = ControlFlow::Exit(0);
                 }
             }
             Event::RedrawRequested(_window_id) => {}

examples/cursor.rs

@@ -42,7 +42,7 @@ fn main() {
                 event: WindowEvent::CloseRequested,
                 ..
             } => {
-                *control_flow = ControlFlow::Exit;
+                *control_flow = ControlFlow::Exit(0);
                 return;
             }
             _ => (),

examples/cursor_grab.rs

@@ -21,7 +21,7 @@ fn main() {
 
         match event {
             Event::WindowEvent { event, .. } => match event {
-                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
+                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit(0),
                 WindowEvent::KeyboardInput {
                     input:
                         KeyboardInput {
@@ -33,7 +33,7 @@ fn main() {
                 } => {
                     use winit::event::VirtualKeyCode::*;
                     match key {
-                        Escape => *control_flow = ControlFlow::Exit,
+                        Escape => *control_flow = ControlFlow::Exit(0),
                         G => window.set_cursor_grab(!modifiers.shift()).unwrap(),
                         H => window.set_cursor_visible(modifiers.shift()),
                         _ => (),

examples/custom_events.rs

@@ -41,7 +41,7 @@ fn main() {
             Event::WindowEvent {
                 event: WindowEvent::CloseRequested,
                 ..
-            } => *control_flow = ControlFlow::Exit,
+            } => *control_flow = ControlFlow::Exit(0),
             _ => (),
         }
     });

examples/drag_window.rs

@@ -22,7 +22,7 @@ fn main() {
             eprintln!("Switch which window is to be dragged by pressing \"x\".")
         }
         Event::WindowEvent { event, window_id } => match event {
-            WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
+            WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit(0),
             WindowEvent::MouseInput {
                 state: ElementState::Pressed,
                 button: MouseButton::Left,

examples/fullscreen.rs

@@ -36,7 +36,7 @@ fn main() {
 
         match event {
             Event::WindowEvent { event, .. } => match event {
-                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
+                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit(0),
                 WindowEvent::KeyboardInput {
                     input:
                         KeyboardInput {
@@ -46,7 +46,7 @@ fn main() {
                         },
                     ..
                 } => match (virtual_code, state) {
-                    (VirtualKeyCode::Escape, _) => *control_flow = ControlFlow::Exit,
+                    (VirtualKeyCode::Escape, _) => *control_flow = ControlFlow::Exit(0),
                     (VirtualKeyCode::F, ElementState::Pressed) => {
                         if window.fullscreen().is_some() {
                             window.set_fullscreen(None);

examples/handling_close.rs

@@ -63,7 +63,7 @@ fn main() {
                                     // event loop (i.e. if it's a multi-window application), you need to
                                     // drop the window. That closes it, and results in `Destroyed` being
                                     // sent.
-                                    *control_flow = ControlFlow::Exit;
+                                    *control_flow = ControlFlow::Exit(0);
                                 }
                             }
                             N => {

examples/min_max_size.rs

@@ -23,7 +23,7 @@ fn main() {
             Event::WindowEvent {
                 event: WindowEvent::CloseRequested,
                 ..
-            } => *control_flow = ControlFlow::Exit,
+            } => *control_flow = ControlFlow::Exit(0),
             _ => (),
         }
     });

examples/minimize.rs

@@ -21,7 +21,7 @@ fn main() {
             Event::WindowEvent {
                 event: WindowEvent::CloseRequested,
                 ..
-            } => *control_flow = ControlFlow::Exit,
+            } => *control_flow = ControlFlow::Exit(0),
 
             // Keyboard input event to handle minimize via a hotkey
             Event::WindowEvent {

examples/mouse_wheel.rs

@@ -19,7 +19,7 @@ fn main() {
 
         match event {
             Event::WindowEvent { event, .. } => match event {
-                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
+                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit(0),
                 _ => (),
             },
             Event::DeviceEvent { event, .. } => match event {

examples/multithreaded.rs

@@ -148,7 +148,7 @@ fn main() {
     event_loop.run(move |event, _event_loop, control_flow| {
         *control_flow = match !window_senders.is_empty() {
             true => ControlFlow::Wait,
-            false => ControlFlow::Exit,
+            false => ControlFlow::Exit(0),
         };
         match event {
             Event::WindowEvent { event, window_id } => match event {

examples/multiwindow.rs

@@ -30,7 +30,7 @@ fn main() {
                         windows.remove(&window_id);
 
                         if windows.is_empty() {
-                            *control_flow = ControlFlow::Exit;
+                            *control_flow = ControlFlow::Exit(0);
                         }
                     }
                     WindowEvent::KeyboardInput {

examples/request_redraw.rs

@@ -21,7 +21,7 @@ fn main() {
 
         match event {
             Event::WindowEvent { event, .. } => match event {
-                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
+                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit(0),
                 WindowEvent::MouseInput {
                     state: ElementState::Released,
                     ..

examples/request_redraw_threaded.rs

@@ -29,7 +29,7 @@ fn main() {
 
         match event {
             Event::WindowEvent { event, .. } => match event {
-                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
+                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit(0),
                 _ => (),
             },
             Event::RedrawRequested(_) => {

examples/resizable.rs

@@ -24,7 +24,7 @@ fn main() {
 
         match event {
             Event::WindowEvent { event, .. } => match event {
-                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
+                WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit(0),
                 WindowEvent::KeyboardInput {
                     input:
                         KeyboardInput {

examples/set_ime_position.rs

@@ -45,7 +45,7 @@ fn main() {
                 event: WindowEvent::CloseRequested,
                 ..
             } => {
-                *control_flow = ControlFlow::Exit;
+                *control_flow = ControlFlow::Exit(0);
                 return;
             }
             _ => (),

examples/timer.rs

@@ -33,7 +33,7 @@ fn main() {
             Event::WindowEvent {
                 event: WindowEvent::CloseRequested,
                 ..
-            } => *control_flow = ControlFlow::Exit,
+            } => *control_flow = ControlFlow::Exit(0),
             _ => (),
         }
     });

examples/transparent.rs

@@ -25,7 +25,7 @@ fn main() {
             Event::WindowEvent {
                 event: WindowEvent::CloseRequested,
                 ..
-            } => *control_flow = ControlFlow::Exit,
+            } => *control_flow = ControlFlow::Exit(0),
             _ => (),
         }
     });

examples/web.rs

@@ -36,7 +36,7 @@ pub fn main() {
             Event::WindowEvent {
                 event: WindowEvent::CloseRequested,
                 window_id,
-            } if window_id == window.id() => *control_flow = ControlFlow::Exit,
+            } if window_id == window.id() => *control_flow = ControlFlow::Exit(0),
             Event::MainEventsCleared => {
                 window.request_redraw();
             }

examples/window.rs

@@ -23,7 +23,7 @@ fn main() {
             Event::WindowEvent {
                 event: WindowEvent::CloseRequested,
                 window_id,
-            } if window_id == window.id() => *control_flow = ControlFlow::Exit,
+            } if window_id == window.id() => *control_flow = ControlFlow::Exit(0),
             Event::MainEventsCleared => {
                 window.request_redraw();
             }

examples/window_debug.rs

@@ -101,7 +101,7 @@ fn main() {
                         window.set_minimized(minimized);
                     }
                     VirtualKeyCode::Q => {
-                        *control_flow = ControlFlow::Exit;
+                        *control_flow = ControlFlow::Exit(0);
                     }
                     VirtualKeyCode::V => {
                         visible = !visible;
@@ -118,7 +118,7 @@ fn main() {
             Event::WindowEvent {
                 event: WindowEvent::CloseRequested,
                 window_id,
-            } if window_id == window.id() => *control_flow = ControlFlow::Exit,
+            } if window_id == window.id() => *control_flow = ControlFlow::Exit(0),
             _ => (),
         }
     });

examples/window_icon.rs

@@ -35,7 +35,7 @@ fn main() {
         if let Event::WindowEvent { event, .. } = event {
             use winit::event::WindowEvent::*;
             match event {
-                CloseRequested => *control_flow = ControlFlow::Exit,
+                CloseRequested => *control_flow = ControlFlow::Exit(0),
                 DroppedFile(path) => {
                     window.set_window_icon(Some(load_icon(&path)));
                 }

examples/window_run_return.rs

@@ -45,7 +45,7 @@ fn main() {
                     quit = true;
                 }
                 Event::MainEventsCleared => {
-                    *control_flow = ControlFlow::Exit;
+                    *control_flow = ControlFlow::Exit(0);
                 }
                 _ => (),
             }