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  "identifier" : "/documentation/Quartz/IKPictureTaker/beginSheet(for:withDelegate:didEnd:contextInfo:)",
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# beginSheet(for:withDelegate:didEnd:contextInfo:)

Opens a picture taker as a sheet whose parent is the specified window.

```
func beginSheet(for aWindow: NSWindow!, withDelegate delegate: Any!, didEnd didEndSelector: Selector!, contextInfo: UnsafeMutableRawPointer!)
```

## Parameters

`aWindow`

The parent window of the picture taker sheet.

`delegate`

The object that will invoke the selector  `didEndSelector` when the picture taker session terminates.

`didEndSelector`

The selector to invoke when the picture taker session terminates.

`contextInfo`

Any data that must be passed as an argument to the delegate through `didEndSelector` after the picture taker session terminates.

## Discussion

The `didEndSelector` method should have the following signature:

`- (void)pictureTakerDidEnd:(IKPictureTaker *)sheet returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo;`

The `returnCode` value is set to `NSOKButton` if the user validates, or to `NSCancelButton` if the user cancels.

---

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