# glyph(at:isValidIndex:) Returns the glyph at a specified index, and optionally returns a flag indicating whether the requested index is valid. ``` func glyph(at glyphIndex: Int, isValidIndex: UnsafeMutablePointer?) -> NSGlyph ``` ## Parameters `glyphIndex` The index of the glyph to be returned. `isValidIndex` If not `NULL`, on output, if the requested index is in range; otherwise . ## Return Value The glyph at the requested index, or `NSNullGlyph` if the requested index is out of the range `{0,` ``NSLayoutManager/numberOfGlyphs```}`. ## Discussion If noncontiguous layout is not enabled, this method causes generation of all glyphs up to and including `glyphIndex`. --- 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)