CTFontDescriptorCreateCopyWithFeature

core_text::font_descriptor

Function CTFontDescriptorCreateCopyWithFeature 

Source 
pub unsafe extern "C" fn CTFontDescriptorCreateCopyWithFeature(
    original: CTFontDescriptorRef,
    featureTypeIdentifier: CFNumberRef,
    featureSelectorIdentifier: CFNumberRef,
) -> CTFontDescriptorRef