curs_print 3x 2023-10-21 ncurses 6.4 Library calls

curs_print(3x)                   Library calls                  curs_print(3x)


       mcprint - write binary data to printer using terminfo capabilities


       #include <curses.h>

       int mcprint(char *data, int len);


       This  function  uses  the mc5p or mc4 and mc5 capabilities, if they are
       present, to ship given data to a printer attached to the terminal.

       Note that the mcprint code has no way  to  do  flow  control  with  the
       printer  or  to  know  how  much buffering it has.  Your application is
       responsible for keeping the rate of writes to  the  printer  below  its
       continuous  throughput  rate  (typically  about half of its nominal cps
       rating).   Dot-matrix  printers  and   6-page-per-minute   lasers   can
       typically  handle  80cps,  so  a  good conservative rule of thumb is to
       sleep for a second after shipping each 80-character line.


       The mcprint function returns ERR if the  write  operation  aborted  for
       some  reason.   In  this  case,  errno  will  contain  either  an error
       associated with write(2) or one of the following:

            Capabilities for printer redirection do not exist.

            Couldn't allocate sufficient memory to buffer the printer write.

       When mcprint succeeds, it returns the  number  of  characters  actually
       sent to the printer.


       The  mcprint  call  was  designed for ncurses, and is not found in SVr4
       curses, 4.4BSD curses, or any other previous version of curses.  It  is
       recommended   that   any   code  depending  on  ncurses  extensions  be
       conditioned using NCURSES_VERSION.


       Padding in the mc5p, mc4, and mc5 capabilities is not interpreted.



ncurses 6.4                       2023-10-21                    curs_print(3x)