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# Deprecated symbols

Review symbols that are no longer in active development, and their recommended replacements.

## Overview

Although these symbols are available for use, Apple is no longer actively developing them, and may remove them in a future release. Apple recommends moving away from these symbols and using their indicated replacements instead. Check the individual symbol pages for the recommended replacements.

## Topics

### Deprecated methods

[`- (BOOL) performMnemonic:(NSString *) string;`](/documentation/AppKit/NSResponder/performMnemonic:)

Handle a mnemonic.

[`- (void) setInterfaceStyle:(NSInterfaceStyle) interfaceStyle;`](/documentation/AppKit/NSResponder/setInterfaceStyle:)

Sets the receiver’s style to the style specified by `interfaceStyle`, such as `NSMacintoshInterfaceStyle` or `NSWindows95InterfaceStyle`.

[`- (NSInterfaceStyle) interfaceStyle;`](/documentation/AppKit/NSResponder/interfaceStyle)

Returns the receiver’s interface style.

[`func beginGesture(with: NSEvent)`](/documentation/AppKit/NSResponder/beginGesture(with:))

Informs the receiver that the user has begun a touch gesture.

[`func endGesture(with: NSEvent)`](/documentation/AppKit/NSResponder/endGesture(with:))

Informs the receiver that the user has ended a touch gesture.

### Deprecated constants

[`extern NSString * NSInterfaceStyleDefault;`](/documentation/AppKit/NSInterfaceStyleDefault)

For more information, see the function [`NSInterfaceStyleForKey`](/documentation/AppKit/NSInterfaceStyleForKey).


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