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# readableDraggedTypes

An array containing dragged file types that are readable.

```
class var readableDraggedTypes: [String] { get }
```

## Discussion

A view must register what types it accepts via [`registerForDraggedTypes(_:)`](/documentation/AppKit/NSView/registerForDraggedTypes(_:)).  Use that class method to get the file promise drag types that [`NSFilePromiseReceiver`](/documentation/AppKit/NSFilePromiseReceiver) can accept, in order to register a view to accept promised files. [`NSFilePromiseReceiver`](/documentation/AppKit/NSFilePromiseReceiver) can accept file promises from both the item-based [`NSFilePromiseProvider`](/documentation/AppKit/NSFilePromiseProvider) and the non-item based API. If you don’t register all these drag types, you might not be notified about some file promise drags. Register using the following code:

```swift
view.registerForDraggedTypes(NSFilePromiseReceiver.readableDraggedTypes())
```

---

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