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# autosave(withDelegate:didAutosave:contextInfo:)

Autosaves the document’s contents to an appropriate location in the file system.

```
func autosave(withDelegate delegate: Any?, didAutosave didAutosaveSelector: Selector?, contextInfo: UnsafeMutableRawPointer?)
```

## Parameters

`delegate`

The delegate to which the selector message is sent.

`didAutosaveSelector`

The selector of the message sent to the delegate.

`contextInfo`

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

## Discussion

After autosaving, sends the message selected by `didAutosaveSelector` to the delegate, with `contextInfo` as the last argument. The method selected by `didAutosaveSelector` must have the same signature as:

```objc
- (void)document:(NSDocument *)document didAutosave:(BOOL)didAutosaveSuccessfully contextInfo:(void *)contextInfo
```

If an error occurs while autosaving, the method reports it to the user before sending the delegate a `succeeded:NO` message.

## See Also

[`autosavedContentsFileURL`](/documentation/AppKit/NSDocument/autosavedContentsFileURL)

The location of the most recently autosaved document contents.


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