# `BCCollectionViewDelegate collectionView:draggingEntered:`

*Instance Method*

## Declaration

```swift
optional func collectionView(_ collectionView: BCCollectionView!, draggingEntered draggingInfo: (any NSDraggingInfo)!) -> NSDragOperation
```

```objc
- (NSDragOperation) collectionView:(BCCollectionView *) collectionView draggingEntered:(id<NSDraggingInfo>) draggingInfo;
```

```python
collectionView_draggingEntered_(collectionView: BCCollectionView, draggingInfo: object) -> NSDragOperation
```