отправлять двоичные данные на принтер (ship binary data to printer)
Имя (Name)
mcprint
- ship binary data to printer
Синопсис (Synopsis)
#include <curses.h>
int mcprint(char *
data, int
len);
Описание (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.
Возвращаемое значение (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 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.
Портативность (Portability)
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.
Ошибки (баги) (Bugs)
Padding in the mc5p
, mc4
and mc5
capabilities will not be
interpreted.
Смотри также (See also)
curses
(3X)