37 lines
762 B
Markdown
37 lines
762 B
Markdown
---
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title: ID Extension
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slug: /extensions/id
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---
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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>`.
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---
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## 📦 Usage
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```rust
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use osui::prelude::*;
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fn main() -> std::io::Result<()> {
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let screen = Screen::new();
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let elements = IdExtension::new(screen.clone());
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screen.extension(elements.clone());
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rsx! {
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"Hello, World"
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}
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.draw(&screen);
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std::thread::spawn({
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let elements = elements.clone();
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move || {
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if let Some(widget) = elements.get_element(42) {
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// use widget
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}
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}
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});
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screen.run()
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}
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```
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