# getRectsExposedDuringLiveResize(_:count:) Returns a list of rectangles indicating the newly exposed areas of the view. ``` func getRectsExposedDuringLiveResize(_ exposedRects: UnsafeMutablePointer, count: UnsafeMutablePointer) ``` ## Parameters `exposedRects` On return, contains the list of rectangles. The returned rectangles are in the coordinate space of the view. `count` Contains the number of rectangles in `exposedRects`; this value may be 0 and is guaranteed to be no more than 4. ## Discussion If your view does not support content preservation during live resizing, the entire area of your view is returned in the `exposedRects` parameter. To support content preservation, override the [`preservesContentDuringLiveResize`](/documentation/AppKit/NSView/preservesContentDuringLiveResize) property in your view and have your implementation return . > Note: > The window containing your view must also support content preservation. To enable support for this feature in your window, use the ``doc://com.apple.appkit/documentation/AppKit/NSWindow/preservesContentDuringLiveResize`` method of `NSWindow`. If the view decreased in both height and width, the list of returned rectangles will be empty. If the view increased in both height and width and its upper-left corner stayed anchored in the same position, the list of returned rectangles will contain a vertical and horizontal component indicating the exposed area. --- 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)