# MidiEventBackendDetached

`import { MidiEventBackendDetached } from "destack:device/binding";`

MIDI backend detached event.

```ds title="MidiEventBackendDetached"
export struct MidiEventBackendDetached {
    kind: "backendDetached";
    timestampNs: uint64;
    sequence: uint64;
    backend: MidiBackendKind;
}
```

[language/library/src/device/binding/midi.ds:256:265](https://github.com/destack-sh/destack/blob/main/language/library/src/device/binding/midi.ds#L256-L265)

## Members

### `kind: "backendDetached"`

Event discriminator.

### `timestampNs: uint64`

Event timestamp in nanoseconds.

### `sequence: uint64`

Event sequence number.

### `backend: MidiBackendKind`

MIDI backend.