Invoked when the mouse is released over a collection view that previously allowed a drop.
Original signature is '- (BOOL)collectionView:(NSCollectionView *)collectionView acceptDrop:(id < NSDraggingInfo >)draggingInfo index:(NSInteger)index dropOperation:(NSCollectionViewDropOperation)dropOperation'
Available in Mac OS X v10.6 and later.

C# | Visual Basic | Visual C++ |
public event NSCollectionView..::..CollectionViewAcceptDropIndexDropOperationEventHandler CollectionViewAcceptDropIndexDropOperation
Public Event CollectionViewAcceptDropIndexDropOperation As NSCollectionView..::..CollectionViewAcceptDropIndexDropOperationEventHandler
public: event NSCollectionView..::..CollectionViewAcceptDropIndexDropOperationEventHandler^ CollectionViewAcceptDropIndexDropOperation { void add (NSCollectionView..::..CollectionViewAcceptDropIndexDropOperationEventHandler^ value); void remove (NSCollectionView..::..CollectionViewAcceptDropIndexDropOperationEventHandler^ value); }

YES if the drop operation should be accepted, otherwise NO.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later)