---
title: IODispatchQueueCancelHandler
framework: driverkit
role: symbol
role_heading: Type Alias
path: driverkit/iodispatchqueuecancelhandler
---

# IODispatchQueueCancelHandler

A block to execute when a canceled dispatch queue stops executing tasks.

## Declaration

```occ
typedef void (^)(void) IODispatchQueueCancelHandler;
```

## See Also

### Stopping the Queue

- [Cancel](driverkit/iodispatchqueue/cancel.md)