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# performMnemonic:

Implemented by subclasses to respond to mnemonics.

```
- (BOOL) performMnemonic:(NSString *) string;
```

## Parameters

`string`

A string representing the mnemonic to handle.

## Discussion

If the view’s mnemonic is the same as the characters of the string `aString`, the view should take the appropriate action and return <doc://com.apple.documentation/documentation/Swift/true>. Otherwise, it should return the result of invoking `super`‘s implementation. The default implementation of this method simply passes the message down the view hierarchy (from superviews to subviews) and returns <doc://com.apple.documentation/documentation/Swift/false> if none of the view’s subviews responds <doc://com.apple.documentation/documentation/Swift/true>. Mnemonics are not supported in macOS.

## See Also

[`func performKeyEquivalent(with: NSEvent) -> Bool`](/documentation/AppKit/NSView/performKeyEquivalent(with:))

Implemented by subclasses to respond to key equivalents (also known as keyboard shortcuts).


---

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