---
title: modeChangeHandler
framework: Paravirtualized Graphics
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 14.0+, macOS 11.0+]
path: paravirtualizedgraphics/pgdisplaydescriptor/modechangehandler
---

# modeChangeHandler

A handler that the framework calls to change the virtual display’s graphics mode.

## Declaration

```swift
var modeChangeHandler: PGDisplayModeChangeHandler? { get set }
```

## See Also

### Handling Mode Changes

- [PGDisplayModeChangeHandler](paravirtualizedgraphics/pgdisplaymodechangehandler.md)