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# NSBrowser.DropOperation

The type used to specify the drop type of a drag-and-drop operation. See [`browser(_:validateDrop:proposedRow:column:dropOperation:)`](/documentation/AppKit/NSBrowserDelegate/browser(_:validateDrop:proposedRow:column:dropOperation:)) for more information.

```
enum DropOperation
```

## Topics

### Constants

[`NSBrowser.DropOperation.on`](/documentation/AppKit/NSBrowser/DropOperation/on)

[`NSBrowser.DropOperation.above`](/documentation/AppKit/NSBrowser/DropOperation/above)


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