MirOS Manual: curs_print(3), mcprint(3)


curs_print(3)       UNIX Programmer's Manual        curs_print(3)

NAME

     mcprint - ship binary data to printer

SYNOPSIS

     #include <curses.h>

     int mcprint(char *data, int len);

DESCRIPTION

     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

     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 fol-
     lowing:

     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 charac-
          ters actually sent to the printer.

PORTABILITY

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

BUGS

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

SEE ALSO

     curses(3)

MirOS BSD #10-current  Printed 03.04.2017                       1

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