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versioned_docs/version-0.0.9/b_screen.md

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+---
+title: Screen
+slug: /screen
+---
+`Screen` is a OSUI structure that allows the program to use osui elements and it's extensions.
+<img src="/img/diagrams/screen.png" alt="Diagram" width="600"/>
+
+### `Screen::new()`
+Creates a new `Screen` structure with empty widgets and extensions.
+
+### `draw(&mut self, element: E) -> &Arc<Widget>`
+Adds a element to the widgets array and returns the widget for extra parameters.
+
+### `extension(&mut self, ext: E)`
+Adds a extension to the extensions array.
+
+### `run(&mut self) -> std::io::Result<()>`
+Runs the app with the elements and extension provided.
+
+### `render(&self) -> std::io::Result<()>`
+> :::warning
+> Do not run this function if you don't know what you're doing, this function may cause a mutex deadlock.
+
+
+### `render_extension(&self, wi: Arc<Widget>) -> std::io::Result<()>`
+> :::warning
+> Do not run this function if you don't know what you're doing, this function may cause a mutex deadlock.