I have an NSCollectionView that I want to accept items dragged from elsewhere in my application.
I implement collectionView:validateDrop:proposedIndex:dropOperation:
and collectionView:acceptDrop:index:dropOperation:
in the collectionview's delegate and register for the appropriate dragged types. Both methods get called fine when I drag the appropriate types, but I don't get a blue focus ring over the collectionview indicating a valid drag.
Have tried both the collection view and its containing scroll view on Default and External settings for the focus ring. Both are just the standard non-derived Cocoa classes. Wondered if there was anything else I should try. Surely it isn't necessary to subclass NSCollectionView for this?
Thanks
Chris