---
title: AVMIDISysexEvent
framework: avfaudio
role: symbol
role_heading: Class
path: avfaudio/avmidisysexevent
---

# AVMIDISysexEvent

An object that represents a MIDI system exclusive message.

## Declaration

```swift
class AVMIDISysexEvent
```

## Overview

Overview You can’t modify the size and contents of this event once you create it.

## Topics

### Creates a System Event

- [init(data:)](avfaudio/avmidisysexevent/init(data:).md)

### Getting the Size of the Event

- [sizeInBytes](avfaudio/avmidisysexevent/sizeinbytes.md)

## Relationships

### Inherits From

- [AVMusicEvent](avfaudio/avmusicevent.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Handling MIDI Events

- [AVMIDINoteEvent](avfaudio/avmidinoteevent.md)
- [AVMIDIMetaEvent](avfaudio/avmidimetaevent.md)