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# NSMatrixDelegate

The `NSMatrixDelegate` protocol defines the optional methods implemented by delegates of `NSMatrix` objects.

```
protocol NSMatrixDelegate : NSControlTextEditingDelegate
```

## Overview

This protocol simply adopts the `NSControlTextEditingDelegate` protocol, adding no additional methods. See [`NSControlTextEditingDelegate`](/documentation/AppKit/NSControlTextEditingDelegate) for more information.

## See Also

[`class NSMatrix`](/documentation/AppKit/NSMatrix)

A legacy interface for grouping radio buttons or other types of cells together.

## Relationships

### Inherits From

[`NSControlTextEditingDelegate`](/documentation/AppKit/NSControlTextEditingDelegate)

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

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