Antmicro grvlΒΆ What is grvl? Quickstart Linking (CMAKE) Minimal example Examples Animating values Callbacks Popups Adding images and fonts Default fonts General API reference Manager ImageContent XML reference XML validity How to construct a grvl XML document? Expressions Generic component/container attributes Generic screen attributes Special attributes List of components/containers List of screens List of special components JavaScript reference JavaScript feature support How to use JavaScript with grvl? grvl functions available in JavaScript Prefabs Metadata On-screen keyboard Widget API Reference Label Button Clock Image ProgressBar CircleProgressBar GridView GridRow CustomView ListView ListItem Panel SwitchButton Slider Last update: 2026-11-05