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# Alert Panel Return Values

These constants define values returned by the [`NSRunAlertPanel`](/documentation/AppKit/NSRunAlertPanel) function and by the `NSApplication` method [`runModalSession(_:)`](/documentation/AppKit/NSApplication/runModalSession(_:)) when the modal session is run with an `NSPanel` provided by the [`NSGetAlertPanel`](/documentation/AppKit/NSGetAlertPanel) function.

## Topics

### Constants

[`var NSAlertDefaultReturn: Int`](/documentation/AppKit/NSAlertDefaultReturn)

The user pressed the default button.

[`var NSAlertAlternateReturn: Int`](/documentation/AppKit/NSAlertAlternateReturn)

The user pressed the alternate button.

[`var NSAlertOtherReturn: Int`](/documentation/AppKit/NSAlertOtherReturn)

The user pressed a second alternate button.

[`var NSAlertErrorReturn: Int`](/documentation/AppKit/NSAlertErrorReturn)

The alert cannot identify the reason it was closed; it may have been closed by an external source or by a button other than those listed above.


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