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42 <H1 class="no-header">curs_attr 3x</H1>
44 <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG> <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>
50 <H2><a name="h2-NAME">NAME</a></H2><PRE>
51 <STRONG>attroff</STRONG>, <STRONG>wattroff</STRONG>, <STRONG>attron</STRONG>, <STRONG>wattron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>wattrset</STRONG>,
52 <STRONG>color_set</STRONG>, <STRONG>wcolor_set</STRONG>, <STRONG>standend</STRONG>, <STRONG>wstandend</STRONG>, <STRONG>standout</STRONG>,
53 <STRONG>wstandout</STRONG>, <STRONG>attr_get</STRONG>, <STRONG>wattr_get</STRONG>, <STRONG>attr_off</STRONG>, <STRONG>wattr_off</STRONG>,
54 <STRONG>attr_on</STRONG>, <STRONG>wattr_on</STRONG>, <STRONG>attr_set</STRONG>, <STRONG>wattr_set</STRONG>, <STRONG>chgat</STRONG>, <STRONG>wchgat</STRONG>,
55 <STRONG>mvchgat</STRONG>, <STRONG>mvwchgat</STRONG>, <STRONG>PAIR_NUMBER</STRONG> - <STRONG>curses</STRONG> character and
56 window attribute control routines
60 <H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
61 <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
62 <STRONG>int</STRONG> <STRONG>attroff(int</STRONG> <EM>attrs);</EM>
63 <STRONG>int</STRONG> <STRONG>wattroff(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
64 <STRONG>int</STRONG> <STRONG>attron(int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
65 <STRONG>int</STRONG> <STRONG>wattron(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
66 <STRONG>int</STRONG> <STRONG>attrset(int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
67 <STRONG>int</STRONG> <STRONG>wattrset(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
68 <STRONG>int</STRONG> <STRONG>color_set(short</STRONG> <EM>color</EM><STRONG>_</STRONG><EM>pair</EM><STRONG>_</STRONG><EM>number</EM><STRONG>,</STRONG> <STRONG>void*</STRONG> <EM>opts</EM><STRONG>);</STRONG>
69 <STRONG>int</STRONG> <STRONG>wcolor_set(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>color</EM><STRONG>_</STRONG><EM>pair</EM><STRONG>_</STRONG><EM>number</EM><STRONG>,</STRONG>
70 <STRONG>void*</STRONG> <EM>opts);</EM>
71 <STRONG>int</STRONG> <STRONG>standend(void);</STRONG>
72 <STRONG>int</STRONG> <STRONG>wstandend(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
73 <STRONG>int</STRONG> <STRONG>standout(void);</STRONG>
74 <STRONG>int</STRONG> <STRONG>wstandout(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
75 <STRONG>int</STRONG> <STRONG>attr_get(attr_t</STRONG> <STRONG>*</STRONG><EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <STRONG>*</STRONG><EM>pair</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
76 <STRONG>int</STRONG> <STRONG>wattr_get(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <STRONG>*</STRONG><EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <STRONG>*</STRONG><EM>pair</EM><STRONG>,</STRONG>
77 <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
78 <STRONG>int</STRONG> <STRONG>attr_off(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
79 <STRONG>int</STRONG> <STRONG>wattr_off(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
80 <STRONG>int</STRONG> <STRONG>attr_on(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
81 <STRONG>int</STRONG> <STRONG>wattr_on(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
82 <STRONG>int</STRONG> <STRONG>attr_set(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>pair</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
83 <STRONG>int</STRONG> <STRONG>wattr_set(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>pair</EM><STRONG>,</STRONG> <STRONG>void</STRONG>
84 <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
85 <STRONG>int</STRONG> <STRONG>chgat(int</STRONG> <EM>n</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attr</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG>
86 <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
87 <STRONG>int</STRONG> <STRONG>wchgat(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attr</EM><STRONG>,</STRONG>
88 <STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
89 <STRONG>int</STRONG> <STRONG>mvchgat(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attr</EM><STRONG>,</STRONG>
90 <STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
91 <STRONG>int</STRONG> <STRONG>mvwchgat(WINDOW</STRONG> <STRONG>*</STRONG><EM>win,</EM> <EM>int</EM> <EM>y,</EM> <EM>int</EM> <EM>x,</EM> <EM>int</EM> <EM>n,</EM>
92 <STRONG>attr_t</STRONG> <EM>attr</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
96 <H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
97 These routines manipulate the current attributes of the
98 named window. The current attributes of a window apply to
99 all characters that are written into the window with <STRONG>wadd-</STRONG>
100 <STRONG>ch</STRONG>, <STRONG>waddstr</STRONG> and <STRONG>wprintw</STRONG>. Attributes are a property of the
101 character, and move with the character through any
102 scrolling and insert/delete line/character operations. To
103 the extent possible, they are displayed as appropriate
104 modifications to the graphic rendition of characters put
109 <H3><a name="h3-attrset">attrset</a></H3><PRE>
110 The routine <STRONG>attrset</STRONG> sets the current attributes of the
111 given window to <EM>attrs</EM>. The routine <STRONG>attroff</STRONG> turns off the
112 named attributes without turning any other attributes on
113 or off. The routine <STRONG>attron</STRONG> turns on the named attributes
114 without affecting any others. The routine <STRONG>standout</STRONG> is the
115 same as <STRONG>attron(A_STANDOUT)</STRONG>. The routine <STRONG>standend</STRONG> is the
116 same as <STRONG>attrset(A_NORMAL)</STRONG> or <STRONG>attrset(0)</STRONG>, that is, it turns
119 The <STRONG>attrset</STRONG> and related routines do not affect the at-
120 tributes used when erasing portions of the window. See
121 <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG> for functions which modify the attributes
122 used for erasing and clearing.
126 <H3><a name="h3-attr_set">attr_set</a></H3><PRE>
127 The <STRONG>attrset</STRONG> routine is actually a legacy feature predating
128 SVr4 curses but kept in X/Open Curses for the same reason
129 that SVr4 curses kept it: compatibility. The routine <STRONG>at-</STRONG>
130 <STRONG>tr_set</STRONG> provides for passing a color-pair parameter.
132 The remaining <STRONG>attr_</STRONG>* functions operate exactly like the
133 corresponding <STRONG>attr</STRONG>* functions, except that they take argu-
134 ments of type <STRONG>attr_t</STRONG> rather than <STRONG>int</STRONG>.
138 <H3><a name="h3-color_set">color_set</a></H3><PRE>
139 The routine <STRONG>color_set</STRONG> sets the current color of the given
140 window to the foreground/background combination described
141 by the color_pair_number. The parameter opts is reserved
142 for future use, applications must supply a null pointer.
146 <H3><a name="h3-attr_get">attr_get</a></H3><PRE>
147 The routine <STRONG>wattr_get</STRONG> returns the current attribute and
148 color pair for the given window; <STRONG>attr_get</STRONG> returns the cur-
149 rent attribute and color pair for <STRONG>stdscr</STRONG>.
151 There is no corresponding <STRONG>attrget</STRONG> function as such in
152 X/Open Curses, although ncurses provides <STRONG>getattrs</STRONG> (see
153 <STRONG><A HREF="curs_legacy.3x.html">curs_legacy(3x)</A></STRONG>).
157 <H3><a name="h3-chgat">chgat</a></H3><PRE>
158 The routine <STRONG>chgat</STRONG> changes the attributes of a given number
159 of characters starting at the current cursor location of
160 <STRONG>stdscr</STRONG>. It does not update the cursor and does not per-
161 form wrapping. A character count of -1 or greater than
162 the remaining window width means to change attributes all
163 the way to the end of the current line. The <STRONG>wchgat</STRONG> func-
164 tion generalizes this to any window; the <STRONG>mvwchgat</STRONG> function
165 does a cursor move before acting. In these functions, the
166 color argument is a color-pair index (as in the first ar-
167 gument of <EM>init</EM><STRONG>_</STRONG><EM>pair</EM>, see <STRONG><A HREF="curs_color.3x.html">curs_color(3x)</A></STRONG>). The <STRONG>opts</STRONG> argu-
168 ment is not presently used, but is reserved for the future
169 (leave it <STRONG>NULL</STRONG>).
173 <H3><a name="h3-Attributes">Attributes</a></H3><PRE>
174 The following video attributes, defined in <STRONG><curses.h></STRONG>, can
175 be passed to the routines <STRONG>attron</STRONG>, <STRONG>attroff</STRONG>, and <STRONG>attrset</STRONG>, or
176 OR'd with the characters passed to <STRONG>addch</STRONG> (see <STRONG><A HREF="curs_addch.3x.html">curs_add-
177 ch(3x)</A></STRONG>).
179 <EM>Name</EM> <EM>Description</EM>
180 ------------------------------------------------------------
181 <STRONG>A_NORMAL</STRONG> Normal display (no highlight)
182 <STRONG>A_STANDOUT</STRONG> Best highlighting mode of the terminal.
183 <STRONG>A_UNDERLINE</STRONG> Underlining
184 <STRONG>A_REVERSE</STRONG> Reverse video
185 <STRONG>A_BLINK</STRONG> Blinking
186 <STRONG>A_DIM</STRONG> Half bright
187 <STRONG>A_BOLD</STRONG> Extra bright or bold
188 <STRONG>A_PROTECT</STRONG> Protected mode
189 <STRONG>A_INVIS</STRONG> Invisible or blank mode
190 <STRONG>A_ALTCHARSET</STRONG> Alternate character set
191 <STRONG>A_ITALIC</STRONG> Italics (non-X/Open extension)
192 <STRONG>A_CHARTEXT</STRONG> Bit-mask to extract a character
194 <STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG> Color-pair number <EM>n</EM>
196 These video attributes are supported by <STRONG>attr_on</STRONG> and relat-
197 ed functions (which also support the attributes recognized
198 by <STRONG>attron</STRONG>, etc.):
200 <EM>Name</EM> <EM>Description</EM>
201 -----------------------------------------
202 <STRONG>WA_HORIZONTAL</STRONG> Horizontal highlight
203 <STRONG>WA_LEFT</STRONG> Left highlight
204 <STRONG>WA_LOW</STRONG> Low highlight
205 <STRONG>WA_RIGHT</STRONG> Right highlight
206 <STRONG>WA_TOP</STRONG> Top highlight
207 <STRONG>WA_VERTICAL</STRONG> Vertical highlight
211 The following macro is the reverse of <STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG>:
213 <STRONG>PAIR_NUMBER(</STRONG><EM>attrs</EM>) Returns the pair number associated
214 with the <STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG> attribute.
216 The return values of many of these routines are not mean-
217 ingful (they are implemented as macro-expanded assignments
218 and simply return their argument). The SVr4 manual page
219 claims (falsely) that these routines always return <STRONG>1</STRONG>.
223 <H2><a name="h2-NOTES">NOTES</a></H2><PRE>
224 Note that <STRONG>attroff</STRONG>, <STRONG>wattroff</STRONG>, <STRONG>attron</STRONG>, <STRONG>wattron</STRONG>, <STRONG>attrset</STRONG>,
225 <STRONG>wattrset</STRONG>, <STRONG>standend</STRONG> and <STRONG>standout</STRONG> may be macros.
227 <STRONG>COLOR_PAIR</STRONG> values can only be OR'd with attributes if the
228 pair number is less than 256. The alternate functions
229 such as <STRONG>color_set</STRONG> can pass a color pair value directly.
230 However, ncurses ABI 4 and 5 simply OR this value within
231 the alternate functions. You must use ncurses ABI 6 to
232 support more than 256 color pairs.
236 <H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
237 These functions are supported in the XSI Curses standard,
238 Issue 4. The standard defined the dedicated type for
239 highlights, <STRONG>attr_t</STRONG>, which is not defined in SVr4 curses.
240 The functions taking <STRONG>attr_t</STRONG> arguments are not supported
243 The XSI Curses standard states that whether the tradition-
244 al functions <STRONG>attron</STRONG>/<STRONG>attroff</STRONG>/<STRONG>attrset</STRONG> can manipulate at-
245 tributes other than <STRONG>A_BLINK</STRONG>, <STRONG>A_BOLD</STRONG>, <STRONG>A_DIM</STRONG>, <STRONG>A_REVERSE</STRONG>,
246 <STRONG>A_STANDOUT</STRONG>, or <STRONG>A_UNDERLINE</STRONG> is "unspecified". Under this
247 implementation as well as SVr4 curses, these functions
248 correctly manipulate all other highlights (specifically,
249 <STRONG>A_ALTCHARSET</STRONG>, <STRONG>A_PROTECT</STRONG>, and <STRONG>A_INVIS</STRONG>).
251 This implementation provides the <STRONG>A_ITALIC</STRONG> attribute for
252 terminals which have the <EM>enter</EM><STRONG>_</STRONG><EM>italics</EM><STRONG>_</STRONG><EM>mode</EM> (sitm) and <EM>ex-</EM>
253 <EM>it</EM><STRONG>_</STRONG><EM>italics</EM><STRONG>_</STRONG><EM>mode</EM> (ritm) capabilities. Italics are not men-
254 tioned in X/Open Curses. Unlike the other video at-
255 tributes, <STRONG>I_ITALIC</STRONG> is unrelated to the <EM>set</EM><STRONG>_</STRONG><EM>attributes</EM> ca-
256 pabilities. This implementation makes the assumption that
257 <EM>exit</EM><STRONG>_</STRONG><EM>attribute</EM><STRONG>_</STRONG><EM>mode</EM> may also reset italics.
259 XSI Curses added the new entry points, <STRONG>attr_get</STRONG>, <STRONG>attr_on</STRONG>,
260 <STRONG>attr_off</STRONG>, <STRONG>attr_set</STRONG>, <STRONG>wattr_on</STRONG>, <STRONG>wattr_off</STRONG>, <STRONG>wattr_get</STRONG>, <STRONG>wat-</STRONG>
261 <STRONG>tr_set</STRONG>. These are intended to work with a new series of
262 highlight macros prefixed with <STRONG>WA_</STRONG>. The older macros have
263 direct counterparts in the newer set of names:
265 <EM>Name</EM> <EM>Description</EM>
266 ------------------------------------------------------------
267 <STRONG>WA_NORMAL</STRONG> Normal display (no highlight)
268 <STRONG>WA_STANDOUT</STRONG> Best highlighting mode of the terminal.
269 <STRONG>WA_UNDERLINE</STRONG> Underlining
270 <STRONG>WA_REVERSE</STRONG> Reverse video
271 <STRONG>WA_BLINK</STRONG> Blinking
272 <STRONG>WA_DIM</STRONG> Half bright
273 <STRONG>WA_BOLD</STRONG> Extra bright or bold
274 <STRONG>WA_ALTCHARSET</STRONG> Alternate character set
276 Very old versions of this library did not force an update
277 of the screen when changing the attributes. Use <STRONG>touchwin</STRONG>
278 to force the screen to match the updated attributes.
280 The XSI curses standard specifies that each pair of corre-
281 sponding <STRONG>A_</STRONG> and <STRONG>WA_</STRONG>-using functions operates on the same
282 current-highlight information.
284 The XSI standard extended conformance level adds new high-
285 lights <STRONG>A_HORIZONTAL</STRONG>, <STRONG>A_LEFT</STRONG>, <STRONG>A_LOW</STRONG>, <STRONG>A_RIGHT</STRONG>, <STRONG>A_TOP</STRONG>, <STRONG>A_VER-</STRONG>
286 <STRONG>TICAL</STRONG> (and corresponding <STRONG>WA_</STRONG> macros for each). As of Au-
287 gust 2013, no known terminal provides these highlights
288 (i.e., via the <STRONG>sgr1</STRONG> capability).
292 <H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
293 All routines return the integer <STRONG>OK</STRONG> on success, or <STRONG>ERR</STRONG> on
296 X/Open does not define any error conditions.
298 This implementation returns an error if the window pointer
299 is null. The <STRONG>wcolor_set</STRONG> function returns an error if the
300 color pair parameter is outside the range 0..COL-
301 OR_PAIRS-1. This implementation also provides <STRONG>getattrs</STRONG>
302 for compatibility with older versions of curses.
304 Functions with a "mv" prefix first perform a cursor move-
305 ment using <STRONG>wmove</STRONG>, and return an error if the position is
306 outside the window, or if the window pointer is null.
310 <H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
311 <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>, <STRONG><A HREF="curs_addstr.3x.html">curs_addstr(3x)</A></STRONG>,
312 <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG>, <STRONG><A HREF="curs_printw.3x.html">curs_printw(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>
316 <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>
320 <li><a href="#h2-NAME">NAME</a></li>
321 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
322 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
324 <li><a href="#h3-attrset">attrset</a></li>
325 <li><a href="#h3-attr_set">attr_set</a></li>
326 <li><a href="#h3-color_set">color_set</a></li>
327 <li><a href="#h3-attr_get">attr_get</a></li>
328 <li><a href="#h3-chgat">chgat</a></li>
329 <li><a href="#h3-Attributes">Attributes</a></li>
332 <li><a href="#h2-NOTES">NOTES</a></li>
333 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
334 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
335 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>