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# presentError(_:modalFor:delegate:didPresent:contextInfo:)

Presents an error alert to the user as a modal panel.

```
func presentError(_ error: any Error, modalFor window: NSWindow, delegate: Any?, didPresent didPresentSelector: Selector?, contextInfo: UnsafeMutableRawPointer?)
```

## Parameters

`error`

The error object encapsulating the information to present to the user.

`window`

The window to which the modal alert belongs.

`delegate`

The delegate to which the selector message is sent.

`didPresentSelector`

The selector of the message sent to the delegate.

`contextInfo`

Object passed with the callback to provide any additional context information.

## Discussion

When the user dismisses the alert and any recovery possible for the error and chosen by the user has been attempted, sends the message `didPresentSelector` to the specified `delegate`.

The `NSDocument` default implementation of this method is equivalent to that of `NSResponder` and treats the shared `NSDocumentController` object as the next responder and forwards these messages to it. The default implementations of several `NSDocument` methods invoke this method.

The default implementation of this method invokes [`willPresentError(_:)`](/documentation/AppKit/NSDocument/willPresentError(_:)) to give subclasses an opportunity to customize error presentation. You should not override this method but should instead override [`willPresentError(_:)`](/documentation/AppKit/NSDocument/willPresentError(_:)).

The method selected by `didPresentSelector` must have the same signature as:

```objc
- (void)didPresentErrorWithRecovery:(BOOL)didRecover contextInfo:(void  *)contextInfo
```

---

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