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* @Id: curs_slk.3x,v 1.11 2001/03/03 21:05:41 Todd.C.Miller Exp @
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-->
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<HTML>
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<HEAD>
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<TITLE>curs_slk 3x</TITLE>
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<link rev=made href="mailto:bug-ncurses@gnu.org">
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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</HEAD>
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<BODY>
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2002-10-13 11:35:53 +08:00
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<H1>curs_slk 3x</H1>
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<HR>
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2000-07-09 10:46:08 +08:00
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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</PRE>
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<H2>NAME</H2><PRE>
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<STRONG>slk_init</STRONG>, <STRONG>slk_set</STRONG>, <STRONG>slk_refresh</STRONG>, <STRONG>slk_noutrefresh</STRONG>,
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<STRONG>slk_label</STRONG>, <STRONG>slk_clear</STRONG>, <STRONG>slk_restore</STRONG>, <STRONG>slk_touch</STRONG>, <STRONG>slk_attron</STRONG>,
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<STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG>, <STRONG>slk_attr_on</STRONG>, <STRONG>slk_attr_set</STRONG>,
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<STRONG>slk_attr_off</STRONG>, <STRONG>slk_attr</STRONG>, <STRONG>slk_color</STRONG> - <STRONG>curses</STRONG> soft label rou-
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tines
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</PRE>
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<H2>SYNOPSIS</H2><PRE>
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<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
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<STRONG>int</STRONG> <STRONG>slk_init(int</STRONG> <STRONG>fmt);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_set(int</STRONG> <STRONG>labnum,</STRONG> <STRONG>const</STRONG> <STRONG>char</STRONG> <STRONG>*label,</STRONG> <STRONG>int</STRONG> <STRONG>fmt);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_refresh(void);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_noutrefresh(void);</STRONG>
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<STRONG>char</STRONG> <STRONG>*slk_label(int</STRONG> <STRONG>labnum);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_clear(void);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_restore(void);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_touch(void);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_attron(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_attroff(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_attrset(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_attr_on(attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_attr_off(const</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG> <STRONG>opts);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_attr_set(const</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG>
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<STRONG>short</STRONG> <STRONG>color_pair_number,</STRONG> <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
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<STRONG>attr_t</STRONG> <STRONG>slk_attr(void);</STRONG>
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<STRONG>int</STRONG> <STRONG>slk_color(short</STRONG> <STRONG>color_pair_number);</STRONG>
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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The slk* functions manipulate the set of soft function-key
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labels that exist on many terminals. For those terminals
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that do not have soft labels, <STRONG>curses</STRONG> takes over the bottom
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line of <STRONG>stdscr</STRONG>, reducing the size of <STRONG>stdscr</STRONG> and the vari-
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able <STRONG>LINES</STRONG>. <STRONG>curses</STRONG> standardizes on eight labels of up to
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eight characters each. In addition to this, the ncurses
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implementation supports a mode where it simulates 12
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labels of up to five characters each. This is most common
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for todays PC like enduser devices. Please note that
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ncurses simulates this mode by taking over up to two lines
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at the bottom of the screen, it doesn't try to use any
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hardware support for this mode.
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The <STRONG>slk_init</STRONG> routine must be called before <STRONG>initscr</STRONG> or
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<STRONG>newterm</STRONG> is called. If <STRONG>initscr</STRONG> eventually uses a line from
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<STRONG>stdscr</STRONG> to emulate the soft labels, then <EM>fmt</EM> determines how
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the labels are arranged on the screen. Setting <EM>fmt</EM> to <STRONG>0</STRONG>
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indicates a 3-2-3 arrangement of the labels, <STRONG>1</STRONG> indicates a
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4-4 arrangement and <STRONG>2</STRONG> indicates the PC like 4-4-4 mode. If
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<STRONG>fmt</STRONG> is set to <STRONG>3</STRONG>, it is again the PC like 4-4-4 mode, but
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in addition an index line is generated, helping the user
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to identify the key numbers easily.
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The <STRONG>slk_set</STRONG> routine requires <EM>labnum</EM> to be a label number,
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from <STRONG>1</STRONG> to <STRONG>8</STRONG> (resp. <STRONG>12</STRONG>); <EM>label</EM> must be the string to be put
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on the label, up to eight (resp. five) characters in
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length. A null string or a null pointer sets up a blank
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label. <EM>fmt</EM> is either <STRONG>0</STRONG>, <STRONG>1</STRONG>, or <STRONG>2</STRONG>, indicating whether the
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label is to be left-justified, centered, or right-justi-
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fied, respectively, within the label.
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The <STRONG>slk_refresh</STRONG> and <STRONG>slk_noutrefresh</STRONG> routines correspond to
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the <STRONG>wrefresh</STRONG> and <STRONG>wnoutrefresh</STRONG> routines.
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The <STRONG>slk_label</STRONG> routine returns the current label for label
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number <EM>labnum</EM>, with leading and trailing blanks stripped.
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The <STRONG>slk_clear</STRONG> routine clears the soft labels from the
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screen.
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The <STRONG>slk_restore</STRONG> routine, restores the soft labels to the
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screen after a <STRONG>slk_clear</STRONG> has been performed.
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The <STRONG>slk_touch</STRONG> routine forces all the soft labels to be
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output the next time a <STRONG>slk_noutrefresh</STRONG> is performed.
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The <STRONG>slk_attron</STRONG>, <STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG> and <STRONG>slk_attr</STRONG> rou-
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tines correspond to <STRONG>attron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>attroff</STRONG> and <STRONG>attr_get</STRONG>.
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They have an effect only if soft labels are simulated on
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the bottom line of the screen. The default highlight for
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soft keys is A_STANDOUT (as in System V curses, which does
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not document this fact).
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The <STRONG>slk_color</STRONG> routine corresponds to <STRONG>color_set</STRONG>. It has an
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effect only if soft labels are simulated on the bottom
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line of the screen.
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</PRE>
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<H2>RETURN VALUE</H2><PRE>
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These routines return <STRONG>ERR</STRONG> upon failure and OK (SVr4 speci-
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fies only "an integer value other than <STRONG>ERR</STRONG>") upon success-
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ful completion. <STRONG>slk_attr</STRONG> returns the attribute used for
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the soft keys.
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<STRONG>slk_label</STRONG> returns <STRONG>NULL</STRONG> on error.
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</PRE>
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<H2>NOTES</H2><PRE>
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Most applications would use <STRONG>slk_noutrefresh</STRONG> because a <STRONG>wre-</STRONG>
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<STRONG>fresh</STRONG> is likely to follow soon.
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</PRE>
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<H2>PORTABILITY</H2><PRE>
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The XSI Curses standard, Issue 4, describes these func-
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tions. It changes the argument type of the attribute-
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manipulation functions <STRONG>slk_attron</STRONG>, <STRONG>slk_attroff</STRONG>,
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<STRONG>slk_attrset</STRONG> to be <STRONG>attr_t</STRONG>, and adds <STRONG>const</STRONG> qualifiers. The
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format codes <STRONG>2</STRONG> and <STRONG>3</STRONG> for <STRONG>slk_init()</STRONG> and the function
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<STRONG>slk_attr</STRONG> are specific to ncurses.
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>,
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<STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>
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</PRE>
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<HR>
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<ADDRESS>
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Man(1) output converted with
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