baudrate, erasechar, erasewchar, has_ic, has_il, killchar,
killwchar, longname, term_attrs, termattrs, termname -
curses environment query routines
int erasewchar(wchar_t *ch);
int killwchar(wchar_t *ch);
The baudrate routine returns the output speed of the ter-
minal. The number returned is in bits per second, for
example 9600, and is an integer.
The erasechar routine returns the user's current erase
The erasewchar routine stores the current erase character
in the location referenced by ch. If no erase character
has been defined, the routine fails and the location ref-
erenced by ch is not changed.
The has_ic routine is true if the terminal has insert- and
delete- character capabilities.
The has_il routine is true if the terminal has insert- and
delete-line capabilities, or can simulate them using
scrolling regions. This might be used to determine if it
would be appropriate to turn on physical scrolling using
The killchar routine returns the user's current line kill
The killwchar routine stores the current line-kill charac-
ter in the location referenced by ch. If no line-kill
character has been defined, the routine fails and the
location referenced by ch is not changed.
The longname routine returns a pointer to a static area
containing a verbose description of the current terminal.
The maximum length of a verbose description is 128 charac-
ters. It is defined only after the call to initscr or
newterm. The area is overwritten by each call to newterm
and is not restored by set_term, so the value should be
saved between calls to newterm if longname is going to be
used with multiple terminals.
If a given terminal does not support a video attribute
that an application program is trying to use, curses may
substitute a different video attribute for it. The ter-
mattrs and term_attrs functions return a logical OR of all
video attributes supported by the terminal using A_ and
WA_ constants respectively. This information is useful
when a curses program needs complete control over the
appearance of the screen.
The termname routine returns the terminal name used by
longname and termname return NULL on error.
Routines that return an integer return ERR upon failure
and OK (SVr4 only specifies "an integer value other than
ERR") upon successful completion.
Note that termattrs may be a macro.
The XSI Curses standard, Issue 4 describes these func-
tions. It changes the return type of termattrs to the new
type attr_t. Most versions of curses truncate the result
returned by termname to 14 characters.
curses(3x), curs_initscr(3x), curs_outopts(3x)