3.2.5.2.2.6 Sending a Devmode to Print Ticket Response

The printer driver supplies the content of the PrintTicket field. If the field is NULL, the is_null_flag field MUST be set to TRUE (0x01). Otherwise, the flag is set to FALSE (0x00) and the PrintTicket field contains the driver output. The return result MUST be sent in the Result field of the response.