TPdfReadingSession が別の単語へ進むときに使うコールバックシグネチャですtype TPdfReadingWordEvent = procedure(Sender: TObject; ChunkIndex, WordIndex: Integer) of object;
| Sender | TObject - The reading session |
| ChunkIndex | Integer - Zero-based chunk index |
| WordIndex | Integer - Zero-based word index inside the current chunk |