Switch

Switch represents a controlled binary setting.

Control an immediate setting

Switch("Use dark appearance", dark_mode)
    .OnChanged([dark_mode](bool checked) {
      dark_mode = checked;
    })

Construct it with bool or State<bool>, with or without a StringVariant label. The caller remains authoritative and must accept or reject each emitted value.

Use a switch for an immediately applied setting. Use a checkbox when the value participates in a form or a set of independently submitted choices.

Interaction and theme

SwitchStyle controls track and thumb geometry, checked and unchecked colors and borders, disabled states, state-layer size, radius, and animation duration. Switch role, checked state, label, focus, and activation semantics are provided automatically.

API

• Constructors: Switch(bool|State<bool>) and Switch(StringVariant, bool|State<bool>).
• Event: .OnChanged(function) with bool.
• Theme style: SwitchStyle.
• Common modifiers: Enabled, Semantics, Opacity.