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# handlerQueue

The dispatch queue that the framework uses to call element value change handlers.

```
var handlerQueue: dispatch_queue_t { get set }
```

## Discussion

The default queue is the main queue. Set this property to another queue to asynchronously call value change handlers (see [`GCControllerAxisInput`](/documentation/GameController/GCControllerAxisInput), [`GCControllerButtonInput`](/documentation/GameController/GCControllerButtonInput), [`GCControllerDirectionPad`](/documentation/GameController/GCControllerDirectionPad), and [`GCMotion`](/documentation/GameController/GCMotion)). For example, if you handle input on another queue, set this property when you first access the input device.

---

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