Function CGFontCopyGlyphNameForGlyph 

pub extern "C-unwind" fn CGFontCopyGlyphNameForGlyph(
    font: Option<&CGFont>,
    glyph: CGGlyph,
) -> Option<CFRetained<CFString>>

👎Deprecated: renamed to CGFont::glyph_name_for_glyph

Available on crate feature CGFont only.