---
title: completionRefCon
framework: coremidi
role: symbol
role_heading: Instance Property
path: coremidi/midisysexsendrequestump/completionrefcon
---

# completionRefCon

Data to pass to the completion function.

## Declaration

```swift
var completionRefCon: UnsafeMutableRawPointer?
```

## See Also

### Configuring and inspecting a request

- [destination](coremidi/midisysexsendrequestump/destination.md)
- [words](coremidi/midisysexsendrequestump/words.md)
- [wordsToSend](coremidi/midisysexsendrequestump/wordstosend.md)
- [complete](coremidi/midisysexsendrequestump/complete.md)
- [MIDICompletionProcUMP](coremidi/midicompletionprocump.md)
- [completionProc](coremidi/midisysexsendrequestump/completionproc.md)
- [MIDIEventPacketSysexBytesForGroup(_:_:_:)](coremidi/midieventpacketsysexbytesforgroup(_:_:_:).md)