get-font-id in font-name-directory<%>

Gets the font ID for a face name paired with a default family. If the mapping for the given pair is not already initialized, 0 is returned. See also find-or-create-font-id.

Font ID are useful only as mapping indices for the-font-name-directory.

• (send a-font-name-directory get-font-id name family) -> exact integer
     name : string
     family : symbol in '(default decorative roman script swiss modern symbol system)