# Appearance Change the view’s visibility, vibrancy, and focus ring and respond to appearance-related changes. ## Topics ### Showing and Hiding the View [`var isHidden: Bool`](/documentation/AppKit/NSView/isHidden) A Boolean value indicating whether the view is hidden. [`var isHiddenOrHasHiddenAncestor: Bool`](/documentation/AppKit/NSView/isHiddenOrHasHiddenAncestor) A Boolean value indicating whether the view is hidden from sight because it, or one of its ancestors, is marked as hidden. [`func viewDidHide()`](/documentation/AppKit/NSView/viewDidHide()) Invoked when the view is hidden, either directly, or in response to an ancestor being hidden. [`func viewDidUnhide()`](/documentation/AppKit/NSView/viewDidUnhide()) Invoked when the view is unhidden, either directly, or in response to an ancestor being unhidden ### Responding to Appearance Changes [`func viewDidChangeEffectiveAppearance()`](/documentation/AppKit/NSView/viewDidChangeEffectiveAppearance()) Informs the view that its effective appearance changed. [`func viewDidChangeBackingProperties()`](/documentation/AppKit/NSView/viewDidChangeBackingProperties()) Responds when the view’s backing store properties change. ### Getting the Vibrancy Setting [`var allowsVibrancy: Bool`](/documentation/AppKit/NSView/allowsVibrancy) A Boolean value indicating whether the view ensures it is vibrant on top of other content. ### Drawing the Focus Ring [`var focusRingType: NSFocusRingType`](/documentation/AppKit/NSView/focusRingType) The type of focus ring drawn around the view. [`var focusRingMaskBounds: NSRect`](/documentation/AppKit/NSView/focusRingMaskBounds) The focus ring mask bounds, specified in the view’s coordinate space. [`func drawFocusRingMask()`](/documentation/AppKit/NSView/drawFocusRingMask()) Draws the focus ring mask for the view. [`func noteFocusRingMaskChanged()`](/documentation/AppKit/NSView/noteFocusRingMaskChanged()) Invoked to notify the view that the focus ring mask requires updating. [`func setKeyboardFocusRingNeedsDisplay(NSRect)`](/documentation/AppKit/NSView/setKeyboardFocusRingNeedsDisplay(_:)) Invalidates the area around the focus ring. [`class var defaultFocusRingType: NSFocusRingType`](/documentation/AppKit/NSView/defaultFocusRingType) Returns the default focus ring type. ### Displaying a Find Indicator [`var isDrawingFindIndicator: Bool`](/documentation/AppKit/NSView/isDrawingFindIndicator) A Boolean value indicating whether the view or one of its ancestors is being drawn for a find indicator. ### Configuring a Cell’s Background [`enum BackgroundStyle`](/documentation/AppKit/NSView/BackgroundStyle) Background styles to apply to a view’s cell. --- 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)