Propagate error from EventLoop creation

Inner panics could make it hard to trouble shoot the issues and for some
users ints not desirable.

The inner panics were left only when they are used to `assert!` during
development.

examples/child_window.rs

@@ -36,7 +36,7 @@ fn main() -> Result<(), impl std::error::Error> {
 
     let mut windows = HashMap::new();
 
-    let event_loop: EventLoop<()> = EventLoop::new();
+    let event_loop: EventLoop<()> = EventLoop::new().unwrap();
     let parent_window = WindowBuilder::new()
         .with_title("parent window")
         .with_position(Position::Logical(LogicalPosition::new(0.0, 0.0)))

examples/control_flow.rs

@@ -36,7 +36,7 @@ fn main() -> Result<(), impl std::error::Error> {
     println!("Press 'R' to toggle request_redraw() calls.");
     println!("Press 'Esc' to close the window.");
 
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
     let window = WindowBuilder::new()
         .with_title("Press 1, 2, 3 to change control flow mode. Press R to toggle redraw requests.")
         .build(&event_loop)

examples/cursor.rs

@@ -12,7 +12,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new().build(&event_loop).unwrap();
     window.set_title("A fantastic window!");

examples/cursor_grab.rs

@@ -13,7 +13,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("Super Cursor Grab'n'Hide Simulator 9000")

examples/custom_events.rs

@@ -18,7 +18,9 @@ fn main() -> Result<(), impl std::error::Error> {
     }
 
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoopBuilder::<CustomEvent>::with_user_event().build();
+    let event_loop = EventLoopBuilder::<CustomEvent>::with_user_event()
+        .build()
+        .unwrap();
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")

examples/drag_window.rs

@@ -13,7 +13,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window_1 = WindowBuilder::new().build(&event_loop).unwrap();
     let window_2 = WindowBuilder::new().build(&event_loop).unwrap();

examples/fullscreen.rs

@@ -15,7 +15,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let mut decorations = true;
     let mut minimized = false;

examples/handling_close.rs

@@ -13,7 +13,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("Your faithful window")

examples/ime.rs

@@ -24,7 +24,7 @@ fn main() -> Result<(), impl std::error::Error> {
     println!("Press F2 to toggle IME. See the documentation of `set_ime_allowed` for more info");
     println!("Press F3 to cycle through IME purposes.");
 
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_inner_size(winit::dpi::LogicalSize::new(256f64, 128f64))

examples/key_binding.rs

@@ -22,7 +22,7 @@ fn main() -> Result<(), impl std::error::Error> {
     mod fill;
 
     simple_logger::SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_inner_size(LogicalSize::new(400.0, 200.0))

examples/monitor_list.rs

@@ -7,7 +7,7 @@ use winit::{event_loop::EventLoop, window::WindowBuilder};
 
 fn main() {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
     let window = WindowBuilder::new().build(&event_loop).unwrap();
 
     if let Some(mon) = window.primary_monitor() {

examples/mouse_wheel.rs

@@ -12,7 +12,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("Mouse Wheel events")

examples/multithreaded.rs

@@ -17,7 +17,7 @@ fn main() -> Result<(), impl std::error::Error> {
     const WINDOW_SIZE: PhysicalSize<u32> = PhysicalSize::new(600, 400);
 
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
     let mut window_senders = HashMap::with_capacity(WINDOW_COUNT);
     for _ in 0..WINDOW_COUNT {
         let window = WindowBuilder::new()

examples/multiwindow.rs

@@ -15,7 +15,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let mut windows = HashMap::new();
     for _ in 0..3 {

examples/request_redraw.rs

@@ -12,7 +12,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")

examples/request_redraw_threaded.rs

@@ -15,7 +15,7 @@ fn main() -> Result<(), impl std::error::Error> {
     mod fill;
 
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = {
         let window = WindowBuilder::new()

examples/resizable.rs

@@ -14,7 +14,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let mut resizable = false;
 

examples/startup_notification.rs

@@ -19,7 +19,7 @@ mod example {
 
     pub(super) fn main() -> Result<(), impl std::error::Error> {
         // Create the event loop and get the activation token.
-        let event_loop = EventLoop::new();
+        let event_loop = EventLoop::new().unwrap();
         let mut current_token = match event_loop.read_token_from_env() {
             Some(token) => Some(token),
             None => {

examples/theme.rs

@@ -13,7 +13,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")

examples/timer.rs

@@ -18,7 +18,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")

examples/touchpad_gestures.rs

@@ -10,7 +10,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("Touchpad gestures")

examples/transparent.rs

@@ -12,7 +12,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_decorations(false)

examples/video_modes.rs

@@ -5,7 +5,7 @@ use winit::event_loop::EventLoop;
 
 fn main() {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
     let monitor = match event_loop.primary_monitor() {
         Some(monitor) => monitor,
         None => {

examples/web.rs

@@ -8,7 +8,7 @@ use winit::{
 };
 
 pub fn main() -> Result<(), impl std::error::Error> {
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let builder = WindowBuilder::new().with_title("A fantastic window!");
     #[cfg(wasm_platform)]

examples/web_aspect_ratio.rs

@@ -31,7 +31,7 @@ This example demonstrates the desired future functionality which will possibly b
     #[wasm_bindgen(start)]
     pub fn run() {
         console_log::init_with_level(log::Level::Debug).expect("error initializing logger");
-        let event_loop = EventLoop::new();
+        let event_loop = EventLoop::new().unwrap();
 
         let window = WindowBuilder::new()
             .with_title("A fantastic window!")

examples/window.rs

@@ -12,7 +12,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")

examples/window_buttons.rs

@@ -16,7 +16,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")

examples/window_debug.rs

@@ -16,7 +16,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")

examples/window_drag_resize.rs

@@ -15,7 +15,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_inner_size(winit::dpi::LogicalSize::new(600.0, 400.0))

examples/window_icon.rs

@@ -23,7 +23,7 @@ fn main() -> Result<(), impl std::error::Error> {
 
     let icon = load_icon(Path::new(path));
 
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("An iconic window!")

examples/window_ondemand.rs

@@ -8,7 +8,7 @@ fn main() -> Result<(), impl std::error::Error> {
     use simple_logger::SimpleLogger;
 
     use winit::{
-        error::RunLoopError,
+        error::EventLoopError,
         event::{Event, WindowEvent},
         event_loop::EventLoop,
         platform::run_ondemand::EventLoopExtRunOnDemand,
@@ -25,9 +25,9 @@ fn main() -> Result<(), impl std::error::Error> {
     }
 
     SimpleLogger::new().init().unwrap();
-    let mut event_loop = EventLoop::new();
+    let mut event_loop = EventLoop::new().unwrap();
 
-    fn run_app(event_loop: &mut EventLoop<()>, idx: usize) -> Result<(), RunLoopError> {
+    fn run_app(event_loop: &mut EventLoop<()>, idx: usize) -> Result<(), EventLoopError> {
         let mut app = App::default();
 
         event_loop.run_ondemand(move |event, event_loop, control_flow| {

examples/window_option_as_alt.rs

@@ -19,7 +19,7 @@ mod fill;
 /// A left mouse click will toggle option_is_alt.
 #[cfg(target_os = "macos")]
 fn main() -> Result<(), impl std::error::Error> {
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")

examples/window_pump_events.rs

@@ -22,7 +22,7 @@ fn main() -> std::process::ExitCode {
     #[path = "util/fill.rs"]
     mod fill;
 
-    let mut event_loop = EventLoop::new();
+    let mut event_loop = EventLoop::new().unwrap();
 
     SimpleLogger::new().init().unwrap();
     let window = WindowBuilder::new()

examples/window_resize_increments.rs

@@ -13,7 +13,7 @@ mod fill;
 
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let window = WindowBuilder::new()
         .with_title("A fantastic window!")

examples/window_tabbing.rs

@@ -21,7 +21,7 @@ mod fill;
 #[cfg(target_os = "macos")]
 fn main() -> Result<(), impl std::error::Error> {
     SimpleLogger::new().init().unwrap();
-    let event_loop = EventLoop::new();
+    let event_loop = EventLoop::new().unwrap();
 
     let mut windows = HashMap::new();
     let window = Window::new(&event_loop).unwrap();