# setBoundsSize(_:) Sets the size of the view’s bounds rectangle to specified dimensions, inversely scaling its coordinate system relative to its frame rectangle. ``` func setBoundsSize(_ newSize: NSSize) ``` ## Parameters `newSize` An `NSSize` structure specifying the new width and height of the view’s bounds rectangle. ## Discussion For example, a view object with a frame size of (100.0, 100.0) and a bounds size of (200.0, 100.0) draws half as wide along the x axis. This method neither redisplays the view nor marks it as needing display. Set the [`needsDisplay`](/documentation/AppKit/NSView/needsDisplay) property to when you want the view to be redisplayed. This method posts an [`boundsDidChangeNotification`](/documentation/AppKit/NSView/boundsDidChangeNotification) to the default notification center if the view is configured to do so. After calling this method, `NSView` creates an internal transform (or appends these changes to an existing internal transform) to convert from frame coordinates to bounds coordinates in your view. As long as the width-to-height ratio of the two coordinate systems remains the same, your content appears normal. If the ratios differ, your content may appear skewed. --- 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)