<!--
{
  "availability" : [
    "macOS: -"
  ],
  "documentType" : "symbol",
  "framework" : "AppKit",
  "identifier" : "/documentation/AppKit/NSButton/BezelStyle-swift.enum/disclosure",
  "metadataVersion" : "0.1.0",
  "role" : "Case",
  "symbol" : {
    "kind" : "Case",
    "modules" : [
      "AppKit"
    ],
    "preciseIdentifier" : "c:@E@NSBezelStyle@NSBezelStyleDisclosure"
  },
  "title" : "NSButton.BezelStyle.disclosure"
}
-->

# NSButton.BezelStyle.disclosure

A bezel style button for use with a disclosure triangle.

```
case disclosure
```

## Discussion

Use this style of button when you want to reveal more information. When you use this bezel style along with the [`NSButton.ButtonType.pushOnPushOff`](/documentation/AppKit/NSButton/ButtonType/pushOnPushOff) button type, the button points it’s disclosure triangle to the right representing a closed state. When someone clicks the button the triangle animates down representing an open state.

```swift
let button = NSButton()
button.title = ""
button.setButtonType(.pushOnPushOff)
button.bezelStyle = .disclosure
```

For design guidance, see [Human Interface Guidelines > Buttons](https://developer.apple.com/design/human-interface-guidelines/buttons).

---

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)