<!--
{
  "availability" : [
    "iOS: 11.0.0 -",
    "iPadOS: 11.0.0 -",
    "macCatalyst: 11.0.0 -",
    "macOS: 10.4.0 -",
    "tvOS: -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "PDFKit",
  "identifier" : "/documentation/PDFKit/PDFAnnotation/buttonWidgetStateString",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "PDFKit"
    ],
    "preciseIdentifier" : "c:objc(cs)PDFAnnotation(py)buttonWidgetStateString"
  },
  "title" : "buttonWidgetStateString"
}
-->

# buttonWidgetStateString

A string value that differentiates button widgets in the same group, such as to identify mutually exclusive radio buttons from each other.

```
var buttonWidgetStateString: String { get set }
```

## Discussion

The default value is `Yes`.

To group button widgets, set the same [`fieldName`](/documentation/PDFKit/PDFAnnotation/fieldName) on the button widgets. The [`buttonWidgetStateString`](/documentation/PDFKit/PDFAnnotation/buttonWidgetStateString) property allows you to identify individual button widgets in that group.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)