curs_slk(3)						     Library Functions Manual						       curs_slk(3)

NAME

       curs_slk,  slk_attr_off,  slk_attr_on,  slk_attr_set,  slk_attroff,  slk_attron,  slk_attrset,  slk_clear,  slk_color, slk_init, slk_label,
       slk_noutrefresh, slk_refresh, slk_restore, slk_set, slk_wset, slk_touch - Curses soft-label routines

SYNOPSIS

       #include <curses.h>

       int slk_attr_off(
	       const attr_t attrs,
	       void *opts ); int slk_attr_on(
	       const attr_t attrs,
	       void *opts ); int slk_attr_set(
	       const attr_t attrs,
	       short color_pair,
	       void *opts ); int slk_attroff(
	       const chtype attrs ); int slk_attron(
	       const chtype attrs ); int slk_attrset(
	       const chtype attrs ); int slk_clear(
	       void ); int slk_color(
	       short color_pair ); int slk_init(
	       int fmt ); char *slk_label(
	       int labnum ); int slk_noutrefresh(
	       void ); int slk_refresh(
	       void ); int slk_restore(
	       void ); int slk_set(
	       int labnum,
	       const char *label,
	       int fmt ); int slk_wset(
	       int labnum,
	       const wchar_t *label,
	       int fmt ); int slk_touch(
	       void );

LIBRARY

       Curses Library (libcurses)

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       slk_attr_off,  slk_attr_on,  slk_attr_set,  slk_attroff,  slk_attron,  slk_attrset,  slk_clear,	 slk_init,   slk_label,   slk_noutrefresh,
       slk_refresh, slk_restore, slk_set, slk_wset, slk_touch:	XCURSES4.2

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

DESCRIPTION

       Curses  manipulates  the set of soft function-key labels that exist on many terminals. For those terminals that do not support soft labels,
       Curses takes over the bottom line of stdscr, reducing the size of stdscr and the variable LINES. Curses standardizes eight labels of up	to
       eight characters each.

       To  use soft labels, applications must call the slk_init routine before calling initscr or newterm.  If initscr eventually uses a line from
       stdscr to emulate the soft labels, then fmt determines how the labels are arranged on the screen. Setting fmt to different values indicates
       the label arrangement as follows: Indicates a 3-2-3 arrangement.  Indicates a 4-4 arrangement.

       The  slk_set and slk_wset routines specify the text of a soft label. The labnum parameter is the label number, with values from 1 to 8. The
       label parameter contains the string, up to 8 characters in length, to be put on the label. A null string or a null pointer sets up a  blank
       label.  The  fmt  parameter can have the values 0, 1, or 2, to indicate whether the label text is left-justified, centered, or right-justi-
       fied, respectively, within the label.

       The slk_refresh and slk_noutrefresh routines correspond to the wrefresh and wnoutrefresh routines but affect labels rather than windows.

       The slk_label function returns the current label text, stripped of leading and trailing blanks, for the label number labnum.

       The slk_clear function clears the soft labels from the screen.

       The slk_restore function restores the soft labels to the screen after an slk_clear operation is performed.

       The slk_touch function forces all the soft labels to be output the next time a slk_noutrefresh operation is performed.

       The slk_attron, slk_attrset, and slk_attroff routines correspond to attron, attrset, and attroff, respectively, but have an effect only	if
       soft labels are simulated on the bottom line of the screen.

       The  slk_attr_off,  slk_attr_on,  and  slk_attr_set  routines  correspond to attr_off, attr_on, and attr_set, respectively, but support the
       attribute constants with the WA_ prefix.  The opts argument is reserved for future use. Currently, the  application  must  provide  a  null
       pointer as opts.

       The slk_color routine corresponds to color_set but has an effect only if soft labels are simulated on the bottom line of the screen.

NOTES

       The header file <curses.h> automatically includes the header file <stdio.h>.

       Most applications use slk_noutrefresh because wrefresh is likely to follow soon.

       Since  the number of columns that a wide-character string occupies is codeset specific, applications call wcwidth and wcswidth to check the
       number of column positions in the string before calling slk_wset.

RETURN VALUES

       Routines that return an integer return ERR upon failure and OK upon successful completion.

       The slk_label routine returns NULL on error.

SEE ALSO

       Functions: curses(3), curs_attr(3), curs_attr_get(3), curs_initscr(3), curs_refresh(3)

       Others: standards(5)

																       curs_slk(3)