---
title: "addObserver(_:)"
framework: virtualization
role: symbol
role_heading: Instance Method
path: "virtualization/vzgraphicsdisplay/addobserver(_:)"
---

# addObserver(_:)

Adds an observer to notify about display configuration changes.

## Declaration

```swift
func addObserver(_ observer: any VZGraphicsDisplayObserver)
```

## Parameters

- `observer`: The new observer the framework notifies about display configuration changes.

## See Also

### Observing changes to the display configuration

- [removeObserver(_:)](virtualization/vzgraphicsdisplay/removeobserver(_:).md)
- [VZGraphicsDisplayObserver](virtualization/vzgraphicsdisplayobserver.md)