Clean up a number of examples

examples/window_focus.rs

@@ -5,37 +5,33 @@ use dioxus_desktop::use_wry_event_handler;
 use dioxus_desktop::{Config, WindowCloseBehaviour};
 
 fn main() {
-    let cfg = Config::new().with_close_behaviour(WindowCloseBehaviour::CloseWindow);
-
-    dioxus_desktop::launch_cfg(app, cfg);
+    Config::new()
+        .with_close_behaviour(WindowCloseBehaviour::CloseWindow)
+        .launch(app)
 }
 
 fn app() -> Element {
     let focused = use_signal(|| false);
 
-    use_wry_event_handler(move |event, _| {
-        if let WryEvent::WindowEvent {
+    use_wry_event_handler(move |event, _| match event {
+        WryEvent::WindowEvent {
             event: WindowEvent::Focused(new_focused),
             ..
-        } = event
-        {
-            focused.set(*new_focused);
-        }
+        } => focused.set(*new_focused),
+        _ => {}
     });
 
     rsx! {
-        div{
+        div {
             width: "100%",
             height: "100%",
             display: "flex",
             flex_direction: "column",
             align_items: "center",
-            {
-                if *focused.get() {
-                    "This window is focused!"
-                } else {
-                    "This window is not focused!"
-                }
+            if *focused() {
+                "This window is focused!"
+            } else {
+                "This window is not focused!"
             }
         }
     }