NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | PORTABILITY | BUGS | SEE ALSO | COLOPHON

curs_print(3X)                                                curs_print(3X)

NAME         top

       mcprint - ship binary data to printer

SYNOPSIS         top

       #include <curses.h>

       int mcprint(char *data, int len);

DESCRIPTION         top

       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.

RETURN VALUE         top

       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:

       ENODEV
            Capabilities for printer redirection do not exist.

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

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

PORTABILITY         top

       The mcprint call was designed for ncurses(3X), and is not found in
       SVr4 curses, 4.4BSD curses, or any other previous version of curses.

BUGS         top

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

SEE ALSO         top

       curses(3X)

COLOPHON         top

       This page is part of the ncurses (new curses) project.  Information
       about the project can be found at 
       ⟨https://www.gnu.org/software/ncurses/ncurses.html⟩.  If you have a
       bug report for this manual page, send it to
       bug-ncurses-request@gnu.org.  This page was obtained from the
       project's upstream Git mirror of the CVS repository 
       ⟨git://ncurses.scripts.mit.edu/ncurses.git⟩ on 2017-04-25.  If you
       discover any rendering problems in this HTML version of the page, or
       you believe there is a better or more up-to-date source for the page,
       or you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org

                                                              curs_print(3X)