quit the application when main window is closed on macOS

src/main.rs

@@ -82,5 +82,12 @@ fn main() {
             Ok::<_, anyhow::Error>(())
         })
         .detach();
+
+        // Quit the application when the window is closed (specifically needed for macOS)
+        #[cfg(target_os = "macos")]
+        {
+            cx.on_window_closed(|cx| cx.quit())
+                .detach();
+        }
     });
 }