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# AVLegibleMediaOptionsMenuController.Delegate

```
protocol Delegate : NSObjectProtocol
```

## Overview

\abstract Delegate protocol for AVLegibleMediaOptionsMenuController
\discussion Provides callbacks for caption preview display and enablement state changes.

## Topics

### Responding to menu changes

[`func legibleMenuController(AVLegibleMediaOptionsMenuController, didChange: AVLegibleMediaOptionsMenuState)`](/documentation/AVKit/AVLegibleMediaOptionsMenuController/Delegate-swift.protocol/legibleMenuController(_:didChange:))

[`func legibleMenuController(AVLegibleMediaOptionsMenuController, didRequestCaptionPreviewForProfileID: String)`](/documentation/AVKit/AVLegibleMediaOptionsMenuController/Delegate-swift.protocol/legibleMenuController(_:didRequestCaptionPreviewForProfileID:))

[`func legibleMenuControllerDidRequestStoppingSubtitleCaptionPreview(AVLegibleMediaOptionsMenuController)`](/documentation/AVKit/AVLegibleMediaOptionsMenuController/Delegate-swift.protocol/legibleMenuControllerDidRequestStoppingSubtitleCaptionPreview(_:))

## Relationships

### Inherits From

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

---

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