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CURSES_ATTRIBUTES(3)	 BSD Library Functions Manual	  CURSES_ATTRIBUTES(3)

NAME
     curses_attributes, attron, attroff, attrset, color_set, getattrs,
     termattrs, wattron, wattroff, wattrset, wcolor_set, attr_on, attr_off,
     attr_set, attr_get, term_attrs, wattr_on, wattr_off, wattr_set, wattr_get
     — curses general attribute manipulation routines

LIBRARY
     Curses Library (libcurses, -lcurses)

SYNOPSIS
     #include <curses.h>

     int
     attron(int attr);

     int
     attroff(int attr);

     int
     attrset(int attr);

     int
     color_set(short pair, void *opt);

     chtype
     getattrs(WINDOW *win);

     chtype
     termattrs(void);

     int
     wcolor_set(WINDOW *win, short pair, void *opt);

     int
     wattron(WINDOW * win, int attr);

     int
     wattroff(WINDOW * win, int attr);

     int
     wattrset(WINDOW * win, int attr);

     int
     attr_on(attr_t attr, void *opt);

     int
     attr_off(attr_t attr, void *opt);

     int
     attr_set(attr_t attr, short pair, void *opt);

     int
     attr_get(attr_t *attr, short *pair, void *opt);

     attr_t
     term_attrs(void);

     int
     wattr_on(WINDOW *win, attr_t attr, void *opt);

     int
     wattr_off(WINDOW *win, attr_t attr, void *opt);

     int
     wattr_set(WINDOW *win, attr_t attr, short pair, void *opt);

     int
     wattr_get(WINDOW *win, attr_t *attr, short *pair, void *opt);

DESCRIPTION
     These functions manipulate attributes on stdscr or on the specified win‐
     dow.  The attributes that can be manipulated are:

	   A_NORMAL	  no special attributes are applied
	   A_STANDOUT	  characters are displayed in standout mode
	   A_UNDERLINE	  characters are displayed underlined
	   A_REVERSE	  characters are displayed in inverse video
	   A_BLINK	  characters blink
	   A_DIM	  characters are displayed at a lower intensity
	   A_BOLD	  characters are displayed at a higher intensity
	   A_INVIS	  characters are added invisibly
	   A_PROTECT	  characters are protected from modification
	   A_ALTCHARSET	  characters are displayed using the alternate charac‐
			  ter set (ACS)
	   COLOR_PAIR(n)  characters are displayed using color pair n.

     The attron() function turns on the attributes specified in attr on
     stdscr, while the attroff() function turns off the attributes specified
     in attr on stdscr.

     The function attrset() sets the attributes of stdscr to those specified
     in attr, turning off any others.  To turn off all the attributes (includ‐
     ing color and alternate character set), use attrset(A_NORMAL).

     Multiple attributes can be manipulated by combining the attributes using
     a logical OR.  For example, attron(A_REVERSE | A_BOLD) will turn on both
     inverse video and higher intensity.

     The function color_set() sets the color pair attribute to the pair speci‐
     fied in pair.

     The function getattrs() returns the attributes that are currently applied
     to window specified by win.

     The function termattrs() returns the logical OR of attributes that can be
     applied to the screen.

     The functions wattron(), wattroff(), wattrset(), and wcolor_set() are
     equivalent to attron(), attroff() attrset(), and color_set() respec‐
     tively, excepting that the attributes are applied to the window specified
     by win.

     The following functions additionally manipulate wide attributes on stdscr
     or on the specified window.  The additional wide attributes that can be
     manipulated are:

	   WA_STANDOUT	  characters are displayed in standout mode
	   WA_UNDERLINE	  characters are displayed underlined
	   WA_REVERSE	  characters are displayed in inverse video
	   WA_BLINK	  characters blink
	   WA_DIM	  characters are displayed at a lower intensity
	   WA_BOLD	  characters are displayed at a higher intensity
	   WA_INVIS	  characters are added invisibly
	   WA_PROTECT	  characters are protected from modification
	   WA_ALTCHARSET  characters are displayed using the alternate charac‐
			  ter set (ACS)
	   WA_LOW	  characters are displayed with low highlight
	   WA_TOP	  characters are displayed with top highlight
	   WA_HORIZONTAL  characters are displayed with horizontal highlight
	   WA_VERTICAL	  characters are displayed with vertical highlight
	   WA_LEFT	  characters are displayed with left highlight
	   WA_RIGHT	  characters are displayed with right highlight

     The attr_on() function turns on the wide attributes specified in attr on
     stdscr, while the attr_off() function turns off the wide attributes spec‐
     ified in attr on stdscr.

     The function attr_set() sets the wide attributes of stdscr to those spec‐
     ified in attr and pair, turning off any others.  Note that a color pair
     specified in pair will override any color pair specified in attr.

     The function attr_get() sets attr to the wide attributes and pair to the
     color pair currently applied to stdscr.  Either of attr and pair can be
     NULL, if the relevant value is of no interest.

     The function term_attrs() returns the logical OR of wide attributes that
     can be applied to the screen.

     The functions wattr_on(), wattr_off() and wattr_set() are equivalent to
     attr_on(), attr_off() and attr_set() respectively, excepting that the
     character is added to the window specified by win.

     The function wattr_get() is equivalent to attr_get(), excepting that the
     wide attributes and color pair currently applied to win are set.

     The following constants can be used to extract the components of a
     chtype:

	   A_ATTRIBUTES	  bit-mask containing attributes part
	   A_CHARTEXT	  bit-mask containing character part
	   A_COLOR	  bit-mask containing color-pair part

RETURN VALUES
     These functions return OK on success and ERR on failure.

SEE ALSO
     curses_addch(3), curses_addchstr(3), curses_addstr(3),
     curses_background(3), curses_color(3), curses_insertch(3),
     curses_standout(3), curses_underscore(3)

NOTES
     The opt argument is not currently used but is reserved for a future ver‐
     sion of the specification.

STANDARDS
     The NetBSD Curses library complies with the X/Open Curses specification,
     part of the Single Unix Specification.

     The getattrs() function is a NetBSD extension.

HISTORY
     These functions first appeared in NetBSD 1.5.

BUGS
     Some terminals do not support characters with both color and other
     attributes set.  In this case, the other attribute is displayed instead
     of the color attribute.

BSD				March 14, 2008				   BSD
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