curs_print(3X) manual page
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mcprint - ship binary data to printer
#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:
- 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.
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.
Padding in the mc5p, mc4 and mc5 capabilities will not be
interpreted.
curses(3X)
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