attroff,  wattroff,  attron,  wattron,  attrset, wattrset,
       color_set,  wcolor_set,  standend,  wstandend,   standout,
       wstandout  - curses character 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 color_set(short color_pair_number, void* opts);
       int wcolor_set(WINDOW *win, short color_pair_number,
               void* opts);
       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
       same as attrset(A_NORMAL) or attrset(0), that is, it turns
       off all attributes.

       The routine color_set sets the current color of the  given
       window  to the foreground/background combination described
       by the color_pair_number. The parameter opts  is  reserved
       for future use, applications must supply a null pointer.

       The  routine  wattr_get  returns the current attribute for
       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.


       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-
       ported under SVr4.

       The  XSI  Curses  standard  states that whether the tradi-
       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)