---
title: fillCallBack
framework: corevideo
role: symbol
role_heading: Instance Property
path: corevideo/cvfillextendedpixelscallbackdata/fillcallback
---

# fillCallBack

## Declaration

```swift
var fillCallBack: CVFillExtendedPixelsCallBack?
```

## See Also

### Properties

- [refCon](corevideo/cvfillextendedpixelscallbackdata/refcon.md)
- [version](corevideo/cvfillextendedpixelscallbackdata/version.md)