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# CGScreenUnregisterMoveCallback(_:_:)

Removes a previously registered callback function invoked when an area of the display is moved.

```
func CGScreenUnregisterMoveCallback(_ callback: CGScreenUpdateMoveCallback, _ userInfo: UnsafeMutableRawPointer?)
```

## Parameters

`callback`

A pointer to the callback function to be unregistered.

`userInfo`

A pointer to user-defined data, or `NULL`. You should pass the same value you used when you registered the callback function.

## Discussion

When you call this function, the two arguments must match the registered entry to be removed.

---

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