base_interface.html#FT_Done_Face">FT_Done_Face</a>. To monitor termination of face objects, the finalizer callback in the &lsquo;generic&rsquo; field of the <a href="ft2-base_interface.html#FT_Face">FT_Face</a> object can be used, which might also be used to store the <a href="ft2-cache_subsystem.html#FTC_FaceID">FTC_FaceID</a> of the face.</p>
<p>Clients are free to map face IDs to anything else. The most simple usage is to associate them to a (pathname,face_index) pair that is used to call <a href="ft2-b