ctfontmanagererror.h学习

CT_EXPORT const CFStringRef kCTFontManagerErrorDomain CT_AVAILABLE(10_6, 3_2);
CT_EXPORT const CFStringRef kCTFontManagerErrorFontURLsKey CT_AVAILABLE(10_6, 3_2);
typedef CF_ENUM(CFIndex, CTFontManagerError) {
    kCTFontManagerErrorFileNotFound             = 101,
    kCTFontManagerErrorInsufficientPermissions  = 102,
    kCTFontManagerErrorUnrecognizedFormat       = 103,
    kCTFontManagerErrorInvalidFontData          = 104,
    kCTFontManagerErrorAlreadyRegistered        = 105,
    kCTFontManagerErrorNotRegistered            = 201,
    kCTFontManagerErrorInUse                    = 202,
    kCTFontManagerErrorSystemRequired           = 203,
};