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RedHat 9 (Linux i386) - man page for slk_set (redhat section 3X)

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curs_slk(3X)									     curs_slk(3X)

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

       #include <curses.h>

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

       The  slk* functions manipulate the set of soft function-key labels that exist on many ter-
       minals.	For those terminals that do not have soft labels, curses takes	over  the  bottom
       line  of  stdscr, reducing the size of stdscr and the variable LINES.  curses standardizes
       on eight labels of up to eight characters each. In addition to this, the ncurses implemen-
       tation supports a mode where it simulates 12 labels of up to five characters each. This is
       most common for todays PC like enduser devices.	Please note that ncurses  simulates  this
       mode by taking over up to two lines at the bottom of the screen, it doesn't try to use any
       hardware support for this mode.

       The slk_init routine must be called before initscr or newterm is called.  If initscr even-
       tually  uses  a	line  from stdscr to emulate the soft labels, then fmt determines how the
       labels are arranged on the screen.  Setting fmt to 0 indicates a 3-2-3 arrangement of  the
       labels,	1  indicates  a 4-4 arrangement and 2 indicates the PC like 4-4-4 mode. If fmt is
       set to 3, it is again the PC like 4-4-4 mode, but in addition an index line is  generated,
       helping the user to identify the key numbers easily.

       The  slk_set  routine  requires labnum to be a label number, from 1 to 8 (resp. 12); label
       must be the string to be put on the label, up to eight (resp. five) characters in  length.
       A  null string or a null pointer sets up a blank label. fmt is either 0, 1, or 2, indicat-
       ing whether the label is  to be	left-justified,  centered,  or	right-justified,  respec-
       tively, within the label.

       The  slk_refresh  and slk_noutrefresh routines correspond to the wrefresh and wnoutrefresh

       The slk_label routine returns the current label for label number labnum, with leading  and
       trailing blanks stripped.

       The slk_clear routine clears the soft labels from the screen.

       The slk_restore routine, restores the soft labels to the screen after a slk_clear has been

       The slk_touch routine forces all the soft labels to be output the next time a  slk_noutre-
       fresh is performed.

       The  slk_attron,  slk_attrset,  slk_attroff  and  slk_attr  routines correspond to attron,
       attrset, attroff and attr_get.  They have an effect only if soft labels are  simulated  on
       the  bottom  line of the screen.  The default highlight for soft keys is A_STANDOUT (as in
       System V curses, which does not document this fact).

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

       These routines return ERR upon failure and OK (SVr4 specifies only "an integer value other
       than ERR") upon successful completion. slk_attr returns the attribute used  for	the  soft

       slk_label returns NULL on error.

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

       The XSI Curses standard, Issue 4, describes these functions.  It changes the argument type
       of the attribute-manipulation functions slk_attron, slk_attroff, slk_attrset to be attr_t,
       and  adds  const  qualifiers.  The  format  codes  2 and 3 for slk_init() and the function
       slk_attr are specific to ncurses.

       curses(3X), curs_attr(3X), curs_initscr(3X), curs_refresh(3X)

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