---
title: AudioFileComponentGetUserDataSize64Proc
framework: audiotoolbox
role: symbol
role_heading: Type Alias
path: audiotoolbox/audiofilecomponentgetuserdatasize64proc
---

# AudioFileComponentGetUserDataSize64Proc

## Declaration

```swift
typealias AudioFileComponentGetUserDataSize64Proc = (UnsafeMutableRawPointer, UInt32, UInt32, UnsafeMutablePointer<UInt64>) -> OSStatus
```

## See Also

### Data Types

- [AUMIDIEventListBlock](audiotoolbox/aumidieventlistblock.md)
- [AudioFileComponentGetUserDataAtOffsetProc](audiotoolbox/audiofilecomponentgetuserdataatoffsetproc.md)
- [CallHostBlock](audiotoolbox/callhostblock.md)