           attroff,  wattroff,  attron,  wattron,  attrset, wattrset,
           standend, wstandend, standout, wstandout - curses  charac-
           ter and window attribute control routines

## SYNOPSIS

           #include <curses.h>
           int attroff(int attrs);
           int wattroff(WINDOW *win, int attrs);
           int attron(int attrs);
           int wattron(WINDOW *win, int attrs);
           int attrset(int attrs);
           int wattrset(WINDOW *win, int attrs);
           int standend(void);
           int wstandend(WINDOW *win);
           int standout(void);
           int wstandout(WINDOW *win);
           attr_t attr_get(void);
           attr_t wattr_get(WINDOW *);
           int attr_off(attr_t attrs);
           int wattr_off(WINDOW *, attr_t attrs);
           int attr_on(attr_t attrs);
           int wattr_on(WINDOW *, attr_t attrs);
           int attr_set(attr_t attrs);
           int wattr_set(WINDOW *, attr_t attrs);
           int  chgat(int  n,  attr_t  attr,  short color, const void
           *opts)
           int wchgat(WINDOW *, int n, attr_t attr,
                 short color, const void *opts)
           int mvchgat(int y, int x, int n, attr_t attr,
                 short color, const void *opts)
           int mvwchgat(WINDOW *, int y, int x, int n, attr_t attr,
                 short color, const void *opts)

## DESCRIPTION

           These routines manipulate the current  attributes  of  the
           named window.  The current attributes of a window apply to
           all characters that are written into the window with  wad-
           dch,  waddstr  and  wprintw.  Attributes are a property of
           the character, and move with  the  character  through  any
           scrolling and insert/delete line/character operations.  To
           the extent possible, they  are  displayed  as  appropriate
           modifications  to  the graphic rendition of characters put
           on the screen.

           The routine attrset sets the  current  attributes  of  the
           given  window to attrs.  The routine attroff turns off the
           named attributes without turning any other  attributes  on
           or  off.  The routine attron turns on the named attributes
           without affecting any others.  The routine standout is the
           same  as  attron(A_STANDOUT).  The routine standend is the
           same as attrset(A_NORMAL) or attrset(0), that is, it turns
           off all attributes.
           the given window; attr_get returns the  current  attribute
           for   stdscr.   The  remaining  attr_*  functions  operate
           exactly like the  corresponding  attr*  functions,  except
           that they take arguments of type attr_t rather than int.

           The routine chgat changes the attributes of a given number
           of characters starting at the current cursor  location  of
           stdscr.   It  does not update the cursor and does not per-
           form wrapping.  A character count of -1  or  greater  than
           the  remaining window width means to change attributes all
           the way to the end of the current line.  The wchgat  func-
           tion generalizes this to any window; the mvwchgat function
           does a cursor move before acting.  In these functions, the
           color  argument  is  a  color-pair  index (as in the first
           argument of  init_pair,  see  curs_color(3X)).   The  opts
           argument  is  not  presently used, but is reserved for the
           future (leave it NULL).

       Attributes
           The following video attributes, defined in <curses.h>, can
           be passed to the routines attron, attroff, and attrset, or
           OR'ed with the characters passed to addch.

           center ; l l .  A_NORMAL  Normal  display  (no  highlight)
           A_STANDOUT     Best  highlighting  mode  of  the terminal.
           A_UNDERLINE    Underlining     A_REVERSE Reverse     video
           A_BLINK   Blinking  A_DIM     Half  bright A_BOLD    Extra
           bright or bold A_PROTECT Protected mode  A_INVIS   Invisi-
           ble  or  blank mode A_ALTCHARSET   Alternate character set
           A_CHARTEXT     Bit-mask    to    extract    a    character
           COLOR_PAIR(n)  Color-pair number n

           The following macro is the reverse of COLOR_PAIR(n):

           PAIR_NUMBER(attrs) Returns the pair number associated
                              with the COLOR_PAIR(n) attribute.

           The  return values of many of these routines are not mean-
           ingful (they are implemented as macro-expanded assignments
           and  simply  return their argument).  The SVr4 manual page
           claims (falsely) that these routines always return 1.

## NOTES

           Note that attroff,  wattroff,  attron,  wattron,  attrset,
           wattrset, standend and standout may be macros.

## PORTABILITY

           All  these functions are supported in the XSI Curses stan-
           dard, Issue 4.  The standard defined  the  dedicated  type
           for  highlights,  attr_t,  which  is  not  defined in SVr4
           curses. The functions taking attr_t arguments are not sup-
           tional  functions  attron/attroff/attrset  can  manipulate
           attributes  other  than A_BLINK, A_BOLD, A_DIM, A_REVERSE,
           A_STANDOUT, or A_UNDERLINE is "unspecified".   Under  this
           implementation  as  well  as  SVr4 curses, these functions
           correctly manipulate all other  highlights  (specifically,
           A_ALTCHARSET, A_PROTECT, and A_INVIS).

           XSI  Curses added the new entry points, attr_get, attr_on,
           attr_off,  attr_set,   wattr_on,   wattr_off,   wattr_get,
           wattr_set.   These  are intended to work with a new series
           of highlight macros prefixed with WA_.

           center ; l l .  WA_NORMAL Normal  display  (no  highlight)
           WA_STANDOUT    Best  highlighting  mode  of  the terminal.
           WA_UNDERLINE   Underlining  WA_REVERSE     Reverse   video
           WA_BLINK  Blinking  WA_DIM    Half  bright WA_BOLD   Extra
           bright or bold WA_ALTCHARSET  Alternate character set

           The XSI curses standard specifies that each pair of corre-
           sponding  A_  and WA_-using functions operates on the same
           current-highlight information.

           The XSI standard extended conformance level adds new high-
           lights A_HORIZONTAL, A_LEFT, A_LOW, A_RIGHT, A_TOP, A_VER-
           TICAL (and corresponding WA_ macros for each)  which  this
           curses does not yet support.

## SEE ALSO

           curses(3X),        curs_addch(3X),        curs_addstr(3X),
           curs_printw(3X)