---
title: cancelAllCGImageGeneration()
framework: avfoundation
role: symbol
role_heading: Instance Method
path: avfoundation/avassetimagegenerator/cancelallcgimagegeneration()
---

# cancelAllCGImageGeneration()

Cancels all pending image generation requests.

## Declaration

```swift
func cancelAllCGImageGeneration()
```

## Discussion

Discussion Calling this method invokes the handler block with a result of AVAssetImageGenerator.Result.cancelled for all requested times for which the generator hasn’t yet produced an image.

## See Also

### Generating images

- [image(at:)](avfoundation/avassetimagegenerator/image(at:).md)
- [images(for:)](avfoundation/avassetimagegenerator/images(for:).md)
- [AVAssetImageGenerator.Images](avfoundation/avassetimagegenerator/images.md)
- [generateCGImageAsynchronously(for:completionHandler:)](avfoundation/avassetimagegenerator/generatecgimageasynchronously(for:completionhandler:).md)
- [generateCGImagesAsynchronously(forTimes:completionHandler:)](avfoundation/avassetimagegenerator/generatecgimagesasynchronously(fortimes:completionhandler:).md)
- [AVAssetImageGeneratorCompletionHandler](avfoundation/avassetimagegeneratorcompletionhandler.md)
- [copyCGImage(at:actualTime:)](avfoundation/avassetimagegenerator/copycgimage(at:actualtime:).md)