# getValues(_:for:) Returns the value of the requested parameter. ``` func getValues(_ vals: UnsafeMutablePointer, for param: NSOpenGLContext.Parameter) ``` ## Parameters `vals` On input, a pointer to a variable with enough space for one or more `long` integers. On output, the variable contains the value (or values) for the given parameter. `param` The parameter you want to get. For a list of parameters, see the table in [`NSOpenGLContext.Parameter`](/documentation/AppKit/NSOpenGLContext/Parameter). ## Discussion --- Copyright © 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)