Returns the glyph property associated with the glyph at the specified index.
- iOS 7.0+
- macOS 10.5+
- tvOS 9.0+
The glyph whose glyph property is returned.
The glyph property associated with the specified glyph.
NSLayout lists the values that can be returned.
If noncontiguous layout is not enabled, this method causes generation of all glyphs up to and including the one at