# `GSSelectionChangeCallbackProtocol`

*Protocol*

## Declaration

```swift
protocol GSSelectionChangeCallbackProtocol : NSObjectProtocol
```

```objc
@protocol GSSelectionChangeCallbackProtocol <NSObject>
```

```python
GSSelectionChangeCallbackProtocol
```

## Topics

### Type Methods

- [`GSSelectionChangeCallbackProtocol selectionDidChangeInLayer:`](/Core/GlyphsApp/GSSelectionChangeCallbackProtocol/selectionDidChangeInLayer:)

## Relationships

### Inherits From

- `NSObject`