slk_attr_set man page on OpenDarwin

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curs_slk(3X)							  curs_slk(3X)

NAME
       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

SYNOPSIS
       #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);

DESCRIPTION
       The slk* functions manipulate the set of soft function-key labels  that
       exist  on  many	terminals.   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 imple‐
       mentation  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 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 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 num‐
       bers 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, indicating
       whether the label is  to be 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.

       The slk_label routine returns the current label for label  number  lab‐
       num, 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 performed.

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

       The  slk_attron,	 slk_attrset, slk_attroff and slk_attr routines corre‐
       spond 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.

RETURN VALUE
       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 keys.

       slk_label returns NULL on error.

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

PORTABILITY
       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 qual‐
       ifiers. The format codes 2  and	3  for	slk_init()  and	 the  function
       slk_attr are specific to ncurses.

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

								  curs_slk(3X)
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