# CTFontGetAdvancesForGlyphs(_:_:_:_:_:) Calculates the advances for an array of glyphs and returns the summed advance. ``` func CTFontGetAdvancesForGlyphs(_ font: CTFont, _ orientation: CTFontOrientation, _ glyphs: UnsafePointer, _ advances: UnsafeMutablePointer?, _ count: CFIndex) -> Double ``` ## Parameters `font` The font reference. `orientation` The intended drawing orientation of the glyphs. Used to determined which glyph metrics to return. `glyphs` An array of `count` number of glyphs. `advances` An array of `count` number of objects to receive the computed glyph advances. If `NULL`, only the overall advance is calculated. `count` The capacity of the `glyphs` and `advances` buffers. ## Return Value The summed glyph advance of an array of glyphs. ## Discussion Individual glyph advances are passed back via the `advances` parameter. These are the ideal metrics for each glyph scaled and transformed in font space. --- 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)