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  "title" : "Response Codes"
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# Response Codes

Response codes identifying the button that was pressed to dismiss a notification dialog.

## Discussion

To extract this value from the response flags of a dismissed notification (such as returned by [`CFUserNotificationReceiveResponse(_:_:_:)`](/documentation/CoreFoundation/CFUserNotificationReceiveResponse(_:_:_:))), you must perform a bitwise-AND operation between the returned response flags and `0x3` before comparing the value to these constants.

## Topics

### Constants

[`var kCFUserNotificationDefaultResponse: CFOptionFlags`](/documentation/CoreFoundation/kCFUserNotificationDefaultResponse)

The default button was pressed.

[`var kCFUserNotificationAlternateResponse: CFOptionFlags`](/documentation/CoreFoundation/kCFUserNotificationAlternateResponse)

The alternate button was pressed.

[`var kCFUserNotificationOtherResponse: CFOptionFlags`](/documentation/CoreFoundation/kCFUserNotificationOtherResponse)

The third button was pressed.

[`var kCFUserNotificationCancelResponse: CFOptionFlags`](/documentation/CoreFoundation/kCFUserNotificationCancelResponse)

No button was pressed and the notification timed out.


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