---
title: readableDraggedTypes
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsfilepromisereceiver/readabledraggedtypes
---

# readableDraggedTypes

An array containing dragged file types that are readable.

## Declaration

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

## Discussion

Discussion A view must register what types it accepts via registerForDraggedTypes(_:).  Use that class method to get the file promise drag types that NSFilePromiseReceiver can accept, in order to register a view to accept promised files. NSFilePromiseReceiver can accept file promises from both the item-based 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: