changes

versioned_docs/version-0.0.9/h_extensions/id.md

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+---
+title: ID Extension
+slug: /extensions/id
+---
+
+The `IdExtension` is a utility struct that provides an interface to look up widgets by a numeric ID within a `Screen`. It is implemented as an `Extension` and is built on top of a thread-safe `Arc<Screen>`.
+
+---
+
+## 📦 Usage
+
+```rust
+use osui::prelude::*;
+
+fn main() -> std::io::Result<()> {
+    let screen = Screen::new();
+    let elements = IdExtension::new(screen.clone());
+    screen.extension(elements.clone());
+
+    rsx! {
+        "Hello, World"
+    }
+    .draw(&screen);
+
+    std::thread::spawn({
+        let elements = elements.clone();
+        move || {
+            if let Some(widget) = elements.get_element(42) {
+                // use widget
+            }
+        }
+    });
+
+    screen.run()
+}
+```