---
title: version
framework: coregraphics
role: symbol
role_heading: Instance Property
path: coregraphics/cgfunctioncallbacks/version
---

# version

The structure version number. For this structure,the version should be 0.

## Declaration

```swift
var version: UInt32
```

## See Also

### Instance Properties

- [evaluate](coregraphics/cgfunctioncallbacks/evaluate.md)
- [releaseInfo](coregraphics/cgfunctioncallbacks/releaseinfo.md)