# draggingImageForItems(at:with:offset:) Returns an image to use for dragging the specified items. ``` func draggingImageForItems(at indexPaths: Set, with event: NSEvent, offset dragImageOffset: NSPointPointer) -> NSImage ``` ## Parameters `indexPaths` The set of objects corresponding to the items being dragged. `event` The mouse-down event that began the drag operation. `dragImageOffset` The offset value to use when positioning the image. On input, the point is , which centers the returned image under the mouse. Custom implementations can return a different point that repositions the drag image by the specified offset values. ## Return Value The image to use for the dragged items. ## Discussion The default implementation of this method creates an image using the visible portions of the dragged items. The resulting image is a snapshot of the dragged items as they currently appear in the collection view but rendered with additional transparency to indicate they are part of a drag operation. This method also updates the `dragImageOffset` parameter to an appropriate point for dragging the resulting image. If the delegate implements the [`collectionView(_:draggingImageForItemsAt:with:offset:)`](/documentation/AppKit/NSCollectionViewDelegate/collectionView(_:draggingImageForItemsAt:with:offset:)-898js) method, the collection view method obtains the drag image from that method instead. If the delegate does not implement that method, the collection view uses the image returned by this method. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)