---
title: isReadOnly
framework: coremediaio
role: symbol
role_heading: Instance Property
path: coremediaio/cmioextensionpropertyattributes/isreadonly
---

# isReadOnly

A Boolean value that indicates whether a property is read-only.

## Declaration

```swift
var isReadOnly: Bool { get }
```

## See Also

### Inspecting Attributes

- [minValue](coremediaio/cmioextensionpropertyattributes/minvalue.md)
- [maxValue](coremediaio/cmioextensionpropertyattributes/maxvalue.md)
- [validValues](coremediaio/cmioextensionpropertyattributes/validvalues.md)