Global Variable


The background color behind individual text characters.


let kCMTextMarkupAttribute_CharacterBackgroundColorARGB: CFString


Value must be a CFArray of 4 CFNumbers representing alpha, red, green, and blue fields with values between 0.0 and 1.0. The red, green and blue components are interpreted in the sRGB color space. The alpha indicates the opacity from 0.0 for transparent to 1.0 for 100% opaque.