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| <H1 class="no-header">curs_attr 3x</H1> |
| <PRE> |
| <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG> <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG> |
| |
| |
| |
| |
| </PRE> |
| <H2><a name="h2-NAME">NAME</a></H2><PRE> |
| <STRONG>attroff</STRONG>, <STRONG>wattroff</STRONG>, <STRONG>attron</STRONG>, <STRONG>wattron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>wattrset</STRONG>, |
| <STRONG>color_set</STRONG>, <STRONG>wcolor_set</STRONG>, <STRONG>standend</STRONG>, <STRONG>wstandend</STRONG>, <STRONG>standout</STRONG>, |
| <STRONG>wstandout</STRONG>, <STRONG>attr_get</STRONG>, <STRONG>wattr_get</STRONG>, <STRONG>attr_off</STRONG>, <STRONG>wattr_off</STRONG>, |
| <STRONG>attr_on</STRONG>, <STRONG>wattr_on</STRONG>, <STRONG>attr_set</STRONG>, <STRONG>wattr_set</STRONG>, <STRONG>chgat</STRONG>, <STRONG>wchgat</STRONG>, |
| <STRONG>mvchgat</STRONG>, <STRONG>mvwchgat</STRONG>, <STRONG>PAIR_NUMBER</STRONG> - <STRONG>curses</STRONG> character and |
| window attribute control routines |
| |
| |
| </PRE> |
| <H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE> |
| <STRONG>#include</STRONG> <STRONG><curses.h></STRONG> |
| <STRONG>int</STRONG> <STRONG>attroff(int</STRONG> <EM>attrs);</EM> |
| <STRONG>int</STRONG> <STRONG>wattroff(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>attrs</EM><STRONG>);</STRONG> |
| <STRONG>int</STRONG> <STRONG>attron(int</STRONG> <EM>attrs</EM><STRONG>);</STRONG> |
| <STRONG>int</STRONG> <STRONG>wattron(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>attrs</EM><STRONG>);</STRONG> |
| <STRONG>int</STRONG> <STRONG>attrset(int</STRONG> <EM>attrs</EM><STRONG>);</STRONG> |
| <STRONG>int</STRONG> <STRONG>wattrset(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>attrs</EM><STRONG>);</STRONG> |
| <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> |
| <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> |
| <STRONG>void*</STRONG> <EM>opts);</EM> |
| <STRONG>int</STRONG> <STRONG>standend(void);</STRONG> |
| <STRONG>int</STRONG> <STRONG>wstandend(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG> |
| <STRONG>int</STRONG> <STRONG>standout(void);</STRONG> |
| <STRONG>int</STRONG> <STRONG>wstandout(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG> |
| <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> |
| <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> |
| <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG> |
| <STRONG>int</STRONG> <STRONG>attr_off(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG> |
| <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> |
| <STRONG>int</STRONG> <STRONG>attr_on(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG> |
| <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> |
| <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> |
| <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> |
| <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG> |
| <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> |
| <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG> |
| <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> |
| <STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG> |
| <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> |
| <STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG> |
| <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> |
| <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> |
| |
| |
| </PRE> |
| <H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE> |
| 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 <STRONG>wadd-</STRONG> |
| <STRONG>ch</STRONG>, <STRONG>waddstr</STRONG> and <STRONG>wprintw</STRONG>. 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. |
| |
| |
| </PRE> |
| <H3><a name="h3-attrset">attrset</a></H3><PRE> |
| The routine <STRONG>attrset</STRONG> sets the current attributes of the |
| given window to <EM>attrs</EM>. The routine <STRONG>attroff</STRONG> turns off the |
| named attributes without turning any other attributes on |
| or off. The routine <STRONG>attron</STRONG> turns on the named attributes |
| without affecting any others. The routine <STRONG>standout</STRONG> is the |
| same as <STRONG>attron(A_STANDOUT)</STRONG>. The routine <STRONG>standend</STRONG> is the |
| same as <STRONG>attrset(A_NORMAL)</STRONG> or <STRONG>attrset(0)</STRONG>, that is, it turns |
| off all attributes. |
| |
| The <STRONG>attrset</STRONG> and related routines do not affect the at- |
| tributes used when erasing portions of the window. See |
| <STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG> for functions which modify the attributes |
| used for erasing and clearing. |
| |
| |
| </PRE> |
| <H3><a name="h3-attr_set">attr_set</a></H3><PRE> |
| The <STRONG>attrset</STRONG> routine is actually a legacy feature predating |
| SVr4 curses but kept in X/Open Curses for the same reason |
| that SVr4 curses kept it: compatbility. The routine <STRONG>at-</STRONG> |
| <STRONG>tr_set</STRONG> provides for passing a color-pair parameter. |
| |
| The remaining <STRONG>attr_</STRONG>* functions operate exactly like the |
| corresponding <STRONG>attr</STRONG>* functions, except that they take argu- |
| ments of type <STRONG>attr_t</STRONG> rather than <STRONG>int</STRONG>. |
| |
| |
| </PRE> |
| <H3><a name="h3-color_set">color_set</a></H3><PRE> |
| The routine <STRONG>color_set</STRONG> 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. |
| |
| |
| </PRE> |
| <H3><a name="h3-attr_get">attr_get</a></H3><PRE> |
| The routine <STRONG>wattr_get</STRONG> returns the current attribute and |
| color pair for the given window; <STRONG>attr_get</STRONG> returns the cur- |
| rent attribute and color pair for <STRONG>stdscr</STRONG>. |
| |
| There is no corresponding <STRONG>attrget</STRONG> function as such in |
| X/Open Curses, although ncurses provides <STRONG>getattrs</STRONG> (see |
| <STRONG><A HREF="curs_legacy.3x.html">curs_legacy(3x)</A></STRONG>). |
| |
| |
| </PRE> |
| <H3><a name="h3-chgat">chgat</a></H3><PRE> |
| The routine <STRONG>chgat</STRONG> changes the attributes of a given number |
| of characters starting at the current cursor location of |
| <STRONG>stdscr</STRONG>. 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 <STRONG>wchgat</STRONG> func- |
| tion generalizes this to any window; the <STRONG>mvwchgat</STRONG> function |
| does a cursor move before acting. In these functions, the |
| color argument is a color-pair index (as in the first ar- |
| 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- |
| ment is not presently used, but is reserved for the future |
| (leave it <STRONG>NULL</STRONG>). |
| |
| |
| </PRE> |
| <H3><a name="h3-Attributes">Attributes</a></H3><PRE> |
| The following video attributes, defined in <STRONG><curses.h></STRONG>, can |
| be passed to the routines <STRONG>attron</STRONG>, <STRONG>attroff</STRONG>, and <STRONG>attrset</STRONG>, or |
| OR'd with the characters passed to <STRONG>addch</STRONG> (see curs_add- |
| <STRONG><A HREF="ch.3x.html">ch(3x)</A></STRONG>). |
| |
| <EM>Name</EM> <EM>Description</EM> |
| ------------------------------------------------------------ |
| <STRONG>A_NORMAL</STRONG> Normal display (no highlight) |
| <STRONG>A_STANDOUT</STRONG> Best highlighting mode of the terminal. |
| <STRONG>A_UNDERLINE</STRONG> Underlining |
| <STRONG>A_REVERSE</STRONG> Reverse video |
| <STRONG>A_BLINK</STRONG> Blinking |
| <STRONG>A_DIM</STRONG> Half bright |
| <STRONG>A_BOLD</STRONG> Extra bright or bold |
| <STRONG>A_PROTECT</STRONG> Protected mode |
| <STRONG>A_INVIS</STRONG> Invisible or blank mode |
| <STRONG>A_ALTCHARSET</STRONG> Alternate character set |
| <STRONG>A_ITALIC</STRONG> Italics (non-X/Open extension) |
| <STRONG>A_CHARTEXT</STRONG> Bit-mask to extract a character |
| |
| <STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG> Color-pair number <EM>n</EM> |
| |
| These video attributes are supported by <STRONG>attr_on</STRONG> and relat- |
| ed functions (which also support the attributes recognized |
| by <STRONG>attron</STRONG>, etc.): |
| |
| <EM>Name</EM> <EM>Description</EM> |
| ----------------------------------------- |
| <STRONG>WA_HORIZONTAL</STRONG> Horizontal highlight |
| <STRONG>WA_LEFT</STRONG> Left highlight |
| <STRONG>WA_LOW</STRONG> Low highlight |
| <STRONG>WA_RIGHT</STRONG> Right highlight |
| <STRONG>WA_TOP</STRONG> Top highlight |
| <STRONG>WA_VERTICAL</STRONG> Vertical highlight |
| |
| For consistency |
| |
| The following macro is the reverse of <STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG>: |
| |
| <STRONG>PAIR_NUMBER(</STRONG><EM>attrs</EM>) Returns the pair number associated |
| with the <STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG> 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 <STRONG>1</STRONG>. |
| |
| |
| </PRE> |
| <H2><a name="h2-NOTES">NOTES</a></H2><PRE> |
| Note that <STRONG>attroff</STRONG>, <STRONG>wattroff</STRONG>, <STRONG>attron</STRONG>, <STRONG>wattron</STRONG>, <STRONG>attrset</STRONG>, |
| <STRONG>wattrset</STRONG>, <STRONG>standend</STRONG> and <STRONG>standout</STRONG> may be macros. |
| |
| <STRONG>COLOR_PAIR</STRONG> values can only be OR'd with attributes if the |
| pair number is less than 256. The alternate functions |
| such as <STRONG>color_set</STRONG> can pass a color pair value directly. |
| However, ncurses ABI 4 and 5 simply OR this value within |
| the alternate functions. You must use ncurses ABI 6 to |
| support more than 256 color pairs. |
| |
| |
| </PRE> |
| <H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE> |
| These functions are supported in the XSI Curses standard, |
| Issue 4. The standard defined the dedicated type for |
| highlights, <STRONG>attr_t</STRONG>, which is not defined in SVr4 curses. |
| The functions taking <STRONG>attr_t</STRONG> arguments are not supported |
| under SVr4. |
| |
| The XSI Curses standard states that whether the tradition- |
| al functions <STRONG>attron</STRONG>/<STRONG>attroff</STRONG>/<STRONG>attrset</STRONG> can manipulate at- |
| tributes other than <STRONG>A_BLINK</STRONG>, <STRONG>A_BOLD</STRONG>, <STRONG>A_DIM</STRONG>, <STRONG>A_REVERSE</STRONG>, |
| <STRONG>A_STANDOUT</STRONG>, or <STRONG>A_UNDERLINE</STRONG> is "unspecified". Under this |
| implementation as well as SVr4 curses, these functions |
| correctly manipulate all other highlights (specifically, |
| <STRONG>A_ALTCHARSET</STRONG>, <STRONG>A_PROTECT</STRONG>, and <STRONG>A_INVIS</STRONG>). |
| |
| This implementation provides the <STRONG>A_ITALIC</STRONG> attribute for |
| terminals which have the <EM>enter</EM><STRONG>_</STRONG><EM>italics</EM><STRONG>_</STRONG><EM>mode</EM> (sitm) and <EM>ex-</EM> |
| <EM>it</EM><STRONG>_</STRONG><EM>italics</EM><STRONG>_</STRONG><EM>mode</EM> (ritm) capabilities. Italics are not men- |
| tioned in X/Open Curses. Unlike the other video at- |
| tributes, <STRONG>I_ITALIC</STRONG> is unrelated to the <EM>set</EM><STRONG>_</STRONG><EM>attributes</EM> ca- |
| pabilities. This implementation makes the assumption that |
| <EM>exit</EM><STRONG>_</STRONG><EM>attribute</EM><STRONG>_</STRONG><EM>mode</EM> may also reset italics. |
| |
| XSI Curses added the new entry points, <STRONG>attr_get</STRONG>, <STRONG>attr_on</STRONG>, |
| <STRONG>attr_off</STRONG>, <STRONG>attr_set</STRONG>, <STRONG>wattr_on</STRONG>, <STRONG>wattr_off</STRONG>, <STRONG>wattr_get</STRONG>, <STRONG>wat-</STRONG> |
| <STRONG>tr_set</STRONG>. These are intended to work with a new series of |
| highlight macros prefixed with <STRONG>WA_</STRONG>. The older macros have |
| direct counterparts in the newer set of names: |
| |
| <EM>Name</EM> <EM>Description</EM> |
| ------------------------------------------------------------ |
| <STRONG>WA_NORMAL</STRONG> Normal display (no highlight) |
| <STRONG>WA_STANDOUT</STRONG> Best highlighting mode of the terminal. |
| <STRONG>WA_UNDERLINE</STRONG> Underlining |
| <STRONG>WA_REVERSE</STRONG> Reverse video |
| <STRONG>WA_BLINK</STRONG> Blinking |
| <STRONG>WA_DIM</STRONG> Half bright |
| <STRONG>WA_BOLD</STRONG> Extra bright or bold |
| <STRONG>WA_ALTCHARSET</STRONG> Alternate character set |
| |
| Very old versions of this library did not force an update |
| of the screen when changing the attributes. Use <STRONG>touchwin</STRONG> |
| to force the screen to match the updated attributes. |
| |
| The XSI curses standard specifies that each pair of corre- |
| sponding <STRONG>A_</STRONG> and <STRONG>WA_</STRONG>-using functions operates on the same |
| current-highlight information. |
| |
| The XSI standard extended conformance level adds new high- |
| 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> |
| <STRONG>TICAL</STRONG> (and corresponding <STRONG>WA_</STRONG> macros for each). As of Au- |
| gust 2013, no known terminal provides these highlights |
| (i.e., via the <STRONG>sgr1</STRONG> capability). |
| |
| |
| </PRE> |
| <H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE> |
| All routines return the integer <STRONG>OK</STRONG> on success, or <STRONG>ERR</STRONG> on |
| failure. |
| |
| X/Open does not define any error conditions. |
| |
| This implementation returns an error if the window pointer |
| is null. The <STRONG>wcolor_set</STRONG> function returns an error if the |
| color pair parameter is outside the range 0..COL- |
| OR_PAIRS-1. This implementation also provides <STRONG>getattrs</STRONG> |
| for compatibility with older versions of curses. |
| |
| Functions with a "mv" prefix first perform a cursor move- |
| ment using <STRONG>wmove</STRONG>, and return an error if the position is |
| outside the window, or if the window pointer is null. |
| |
| |
| </PRE> |
| <H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE> |
| <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>, |
| <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> |
| |
| |
| |
| <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG> |
| </PRE> |
| <div class="nav"> |
| <ul> |
| <li><a href="#h2-NAME">NAME</a></li> |
| <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li> |
| <li><a href="#h2-DESCRIPTION">DESCRIPTION</a> |
| <ul> |
| <li><a href="#h3-attrset">attrset</a></li> |
| <li><a href="#h3-attr_set">attr_set</a></li> |
| <li><a href="#h3-color_set">color_set</a></li> |
| <li><a href="#h3-attr_get">attr_get</a></li> |
| <li><a href="#h3-chgat">chgat</a></li> |
| <li><a href="#h3-Attributes">Attributes</a></li> |
| </ul> |
| </li> |
| <li><a href="#h2-NOTES">NOTES</a></li> |
| <li><a href="#h2-PORTABILITY">PORTABILITY</a></li> |
| <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li> |
| <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li> |
| </ul> |
| </div> |
| </BODY> |
| </HTML> |
