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-<H1>curs_slk 3x</H1>
-<HR>
+<H1 class="no-header">curs_slk 3x 2023-11-25 ncurses 6.4 Library calls</H1>
<PRE>
-<!-- Manpage converted by man2html 3.0.1 -->
-<STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG> <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
+<STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG> Library calls <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
-</PRE>
-<H2>NAME</H2><PRE>
- <STRONG>slk_init</STRONG>, <STRONG>slk_set</STRONG>, <STRONG>slk_wset</STRONG>, <STRONG>slk_refresh</STRONG>, <STRONG>slk_noutrefresh</STRONG>,
- <STRONG>slk_label</STRONG>, <STRONG>slk_clear</STRONG>, <STRONG>slk_restore</STRONG>, <STRONG>slk_touch</STRONG>, <STRONG>slk_attron</STRONG>,
- <STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG>, <STRONG>slk_attr_on</STRONG>, <STRONG>slk_attr_set</STRONG>,
- <STRONG>slk_attr_off</STRONG>, <STRONG>slk_attr</STRONG>, <STRONG>slk_color</STRONG> - <STRONG>curses</STRONG> soft label
- routines
+</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
+ <STRONG>slk_init</STRONG>, <STRONG>slk_set</STRONG>, <STRONG>slk_wset</STRONG>, <STRONG>slk_refresh</STRONG>, <STRONG>slk_noutrefresh</STRONG>, <STRONG>slk_label</STRONG>,
+ <STRONG>slk_clear</STRONG>, <STRONG>slk_restore</STRONG>, <STRONG>slk_touch</STRONG>, <STRONG>slk_attron</STRONG>, <STRONG>slk_attrset</STRONG>,
+ <STRONG>slk_attroff</STRONG>, <STRONG>slk_attr_on</STRONG>, <STRONG>slk_attr_set</STRONG>, <STRONG>slk_attr_off</STRONG>, <STRONG>slk_attr</STRONG>,
+ <STRONG>slk_color</STRONG>, <STRONG>extended_slk_color</STRONG> - <EM>curses</EM> soft label key routines
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
+</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
- <STRONG>int</STRONG> <STRONG>slk_init(int</STRONG> <STRONG>fmt);</STRONG>
- <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>
+ <STRONG>int</STRONG> <STRONG>slk_init(int</STRONG> <EM>fmt</EM><STRONG>);</STRONG>
+
+ <STRONG>int</STRONG> <STRONG>slk_set(int</STRONG> <EM>labnum</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>label</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>fmt</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_wset(int</STRONG> <EM>labnum</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>wchar_t</STRONG> <STRONG>*</STRONG><EM>label</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>fmt</EM><STRONG>);</STRONG>
+
+ <STRONG>char</STRONG> <STRONG>*slk_label(int</STRONG> <EM>labnum</EM><STRONG>);</STRONG>
+
<STRONG>int</STRONG> <STRONG>slk_refresh(void);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_noutrefresh(void);</STRONG>
- <STRONG>char</STRONG> <STRONG>*slk_label(int</STRONG> <STRONG>labnum);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_clear(void);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_restore(void);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_touch(void);</STRONG>
- <STRONG>int</STRONG> <STRONG>slk_attron(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
- <STRONG>int</STRONG> <STRONG>slk_attroff(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
- <STRONG>int</STRONG> <STRONG>slk_attrset(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
- <STRONG>int</STRONG> <STRONG>slk_attr_on(attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
- <STRONG>int</STRONG> <STRONG>slk_attr_off(const</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG> <STRONG>opts);</STRONG>
- <STRONG>int</STRONG> <STRONG>slk_attr_set(const</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>short</STRONG> <STRONG>color_pair,</STRONG>
- <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
- <STRONG>attr_t</STRONG> <STRONG>slk_attr(void);</STRONG>
- <STRONG>int</STRONG> <STRONG>slk_color(short</STRONG> <STRONG>color_pair);</STRONG>
- <STRONG>int</STRONG> <STRONG>slk_wset(int</STRONG> <STRONG>labnum,</STRONG> <STRONG>const</STRONG> <STRONG>wchar_t</STRONG> <STRONG>*label,</STRONG> <STRONG>int</STRONG> <STRONG>fmt);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attron(const</STRONG> <STRONG>chtype</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attroff(const</STRONG> <STRONG>chtype</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attrset(const</STRONG> <STRONG>chtype</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attr_on(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void*</STRONG> <EM>opts</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attr_off(const</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG> <EM>opts</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>slk_attr_set(const</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>pair</EM><STRONG>,</STRONG> <STRONG>void*</STRONG> <EM>opts</EM><STRONG>);</STRONG>
+ <EM>/*</EM> <EM>extension</EM> <EM>*/</EM>
+ <STRONG>attr_t</STRONG> <STRONG>slk_attr(void);</STRONG>
-</PRE>
-<H2>DESCRIPTION</H2><PRE>
- The slk* functions manipulate the set of soft function-key
- labels that exist on many terminals. For those terminals
- that do not have soft labels, <STRONG>curses</STRONG> takes over the bottom
- line of <STRONG>stdscr</STRONG>, reducing the size of <STRONG>stdscr</STRONG> and the vari-
- able <STRONG>LINES</STRONG>. <STRONG>curses</STRONG> standardizes on eight labels of up to
- eight characters each. In addition to this, the ncurses
- implementation supports a mode where it simulates 12 la-
- bels of up to five characters each. This is useful for
- today's PC-like enduser devices. ncurses simulates this
- mode by taking over up to two lines at the bottom of the
- screen; it does not try to use any hardware support for
+ <STRONG>int</STRONG> <STRONG>slk_color(short</STRONG> <EM>pair</EM><STRONG>);</STRONG>
+ <EM>/*</EM> <EM>extension</EM> <EM>*/</EM>
+ <STRONG>int</STRONG> <STRONG>extended_slk_color(int</STRONG> <EM>pair</EM><STRONG>);</STRONG>
+
+
+</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
+ The <STRONG>slk</STRONG>* functions manipulate the set of soft function-key labels that
+ exist on many terminals. For those terminals that do not have soft
+ labels, <EM>curses</EM> takes over the bottom line of <STRONG>stdscr</STRONG>, reducing the size
+ of <STRONG>stdscr</STRONG> and the variable <STRONG>LINES</STRONG>. <EM>curses</EM> standardizes on eight labels
+ of up to eight characters each. In addition to this, the <EM>ncurses</EM>
+ implementation supports a mode where it simulates 12 labels of up to
+ five characters each. This is useful for PC-like enduser devices.
+ <EM>ncurses</EM> simulates this mode by taking over up to two lines at the
+ bottom of the screen; it does not try to use any hardware support for
this mode.
- The <STRONG>slk_init</STRONG> routine must be called before <STRONG>initscr</STRONG> or
- <STRONG>newterm</STRONG> is called. If <STRONG>initscr</STRONG> eventually uses a line from
- <STRONG>stdscr</STRONG> to emulate the soft labels, then <EM>fmt</EM> determines how
- the labels are arranged on the screen:
- <STRONG>0</STRONG> indicates a 3-2-3 arrangement of the labels.
+</PRE><H3><a name="h3-Initialization">Initialization</a></H3><PRE>
+ The <STRONG>slk_init</STRONG> routine must be called before <STRONG>initscr</STRONG> or <STRONG>newterm</STRONG> is
+ called. If <STRONG>initscr</STRONG> eventually uses a line from <STRONG>stdscr</STRONG> to emulate the
+ soft labels, then <EM>fmt</EM> determines how the labels are arranged on the
+ screen:
- <STRONG>1</STRONG> indicates a 4-4 arrangement
+ <STRONG>0</STRONG> indicates a 3-2-3 arrangement of the labels.
- <STRONG>2</STRONG> indicates the PC-like 4-4-4 mode.
+ <STRONG>1</STRONG> indicates a 4-4 arrangement
- <STRONG>3</STRONG> is again the PC-like 4-4-4 mode, but in addition
- an index line is generated, helping the user to
- identify the key numbers easily.
+ <STRONG>2</STRONG> indicates the PC-like 4-4-4 mode.
- The <STRONG>slk_set</STRONG> routine (and the <STRONG>slk_wset</STRONG> routine for the
- wide-character library) has three parameters:
+ <STRONG>3</STRONG> is again the PC-like 4-4-4 mode, but in addition an index line is
+ generated, helping the user to identify the key numbers easily.
- <EM>labnum</EM>
- is the label number, from <STRONG>1</STRONG> to <STRONG>8</STRONG> (12 for <EM>fmt</EM>
- in <STRONG>slk_init</STRONG> is <STRONG>2</STRONG> or <STRONG>3</STRONG>);
- <EM>label</EM>
- is be the string to put on the label, up to
- eight (five for <EM>fmt</EM> in <STRONG>slk_init</STRONG> is <STRONG>2</STRONG> or <STRONG>3</STRONG>)
- characters in length. A null string or a null
- pointer sets up a blank label.
+</PRE><H3><a name="h3-Labels">Labels</a></H3><PRE>
+ The <STRONG>slk_set</STRONG> routine (and the <STRONG>slk_wset</STRONG> routine for the wide-character
+ library) has three parameters:
- <EM>fmt</EM> is either <STRONG>0</STRONG>, <STRONG>1</STRONG>, or <STRONG>2</STRONG>, indicating whether the
- label is to be left-justified, centered, or
- right-justified, respectively, within the la-
- bel.
+ <EM>labnum</EM>
+ is the label number, from <STRONG>1</STRONG> to <STRONG>8</STRONG> (12 if <EM>fmt</EM> in <STRONG>slk_init</STRONG> is <STRONG>2</STRONG> or
+ <STRONG>3</STRONG>);
- The <STRONG>slk_refresh</STRONG> and <STRONG>slk_noutrefresh</STRONG> routines correspond to
- the <STRONG>wrefresh</STRONG> and <STRONG>wnoutrefresh</STRONG> routines.
+ <EM>label</EM>
+ is be the string to put on the label, up to eight (five if <EM>fmt</EM>
+ in <STRONG>slk_init</STRONG> is <STRONG>2</STRONG> or <STRONG>3</STRONG>) characters in length. A null string or
+ a null pointer sets up a blank label.
- The <STRONG>slk_label</STRONG> routine returns the current label for label
- number <EM>labnum</EM>, with leading and trailing blanks stripped.
+ <EM>fmt</EM> is either <STRONG>0</STRONG>, <STRONG>1</STRONG>, or <STRONG>2</STRONG>, indicating whether the label is to be
+ left-justified, centered, or right-justified, respectively,
+ within the label.
- The <STRONG>slk_clear</STRONG> routine clears the soft labels from the
- screen.
+ The <STRONG>slk_label</STRONG> routine returns the current label for label number
+ <EM>labnum</EM>, with leading and trailing blanks stripped.
- The <STRONG>slk_restore</STRONG> routine restores the soft labels to the
- screen after a <STRONG>slk_clear</STRONG> has been performed.
- The <STRONG>slk_touch</STRONG> routine forces all the soft labels to be
- output the next time a <STRONG>slk_noutrefresh</STRONG> is performed.
+</PRE><H3><a name="h3-Screen-updates">Screen updates</a></H3><PRE>
+ The <STRONG>slk_refresh</STRONG> and <STRONG>slk_noutrefresh</STRONG> routines correspond to the <STRONG>wrefresh</STRONG>
+ and <STRONG>wnoutrefresh</STRONG> routines.
- The <STRONG>slk_attron</STRONG>, <STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG> and <STRONG>slk_attr</STRONG> rou-
- tines correspond to <STRONG>attron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>attroff</STRONG> and <STRONG>attr_get</STRONG>.
- They have an effect only if soft labels are simulated on
- the bottom line of the screen. The default highlight for
- soft keys is A_STANDOUT (as in System V curses, which does
- not document this fact).
+ The <STRONG>slk_clear</STRONG> routine clears the soft labels from the screen.
- The <STRONG>slk_color</STRONG> routine corresponds to <STRONG>color_set</STRONG>. It has an
- effect only if soft labels are simulated on the bottom
- line of the screen.
+ The <STRONG>slk_restore</STRONG> routine restores the soft labels to the screen after a
+ <STRONG>slk_clear</STRONG> has been performed.
+ The <STRONG>slk_touch</STRONG> routine forces all the soft labels to be output the next
+ time a <STRONG>slk_noutrefresh</STRONG> is performed.
-</PRE>
-<H2>RETURN VALUE</H2><PRE>
- These routines return <STRONG>ERR</STRONG> upon failure and OK (SVr4 speci-
- fies only "an integer value other than <STRONG>ERR</STRONG>") upon success-
- ful completion.
- X/Open defines no error conditions. In this implementa-
- tion
+</PRE><H3><a name="h3-Video-attributes">Video attributes</a></H3><PRE>
+ The <STRONG>slk_attron</STRONG>, <STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG> and <STRONG>slk_attr</STRONG> routines
+ correspond to <STRONG>attron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>attroff</STRONG> and <STRONG>attr_get</STRONG>, respectively.
+ They have an effect only if soft labels are simulated on the bottom
+ line of the screen. The default highlight for soft keys is A_STANDOUT
+ (as in System V <EM>curses</EM>, which does not document this fact).
- <STRONG>slk_attr</STRONG>
- returns the attribute used for the soft keys.
- <STRONG>slk_attroff</STRONG>, <STRONG>slk_attron</STRONG>, <STRONG>slk_clear</STRONG>,
- <STRONG>slk_noutrefresh</STRONG>, <STRONG>slk_refresh</STRONG>, <STRONG>slk_touch</STRONG>
- return an error if the terminal or the soft-
- keys were not initialized.
+</PRE><H3><a name="h3-Colors">Colors</a></H3><PRE>
+ The <STRONG>slk_color</STRONG> routine corresponds to <STRONG>color_set</STRONG>. It has an effect only
+ if soft labels are simulated on the bottom line of the screen.
- <STRONG>slk_attrset</STRONG>
- returns an error if the terminal or the soft-
- keys were not initialized.
+ Because <STRONG>slk_color</STRONG> accepts only <STRONG>short</STRONG> (signed 16-bit integer) values,
+ this implementation provides <STRONG>extended_slk_color</STRONG> which accepts an
+ integer value, e.g., 32-bits.
- <STRONG>slk_attr_set</STRONG>
- returns an error if the terminal or the soft-
- keys were not initialized, or the color pair
- is outside the range 0..COLOR_PAIRS-1, or opts
- is not null.
- <STRONG>slk_color</STRONG>
- returns an error if the terminal or the soft-
- keys were not initialized, or the color pair
- is outside the range 0..COLOR_PAIRS-1.
+</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
+ These routines return <STRONG>ERR</STRONG> upon failure and <STRONG>OK</STRONG> (SVr4 specifies only "an
+ integer value other than <STRONG>ERR</STRONG>") upon successful completion.
- <STRONG>slk_init</STRONG>
- returns an error if the format parameter is
- outside the range 0..3.
+ X/Open defines no error conditions. In this implementation
- <STRONG>slk_label</STRONG>
- returns <STRONG>NULL</STRONG> on error.
+ <STRONG>slk_attr</STRONG>
+ returns the attribute used for the soft keys.
- <STRONG>slk_set</STRONG>
- returns an error if the terminal or the soft-
- keys were not initialized, or the <EM>labnum</EM> pa-
- rameter is outside the range of label counts,
- or if the format parameter is outside the
- range 0..2, or if memory for the labels cannot
- be allocated.
+ <STRONG>slk_attroff</STRONG>, <STRONG>slk_attron</STRONG>, <STRONG>slk_clear</STRONG>, <STRONG>slk_noutrefresh</STRONG>, <STRONG>slk_refresh</STRONG>,
+ <STRONG>slk_touch</STRONG>
+ return an error if the terminal or the softkeys were not
+ initialized.
+ <STRONG>slk_attrset</STRONG>
+ returns an error if the terminal or the softkeys were not
+ initialized.
-</PRE>
-<H2>NOTES</H2><PRE>
- Most applications would use <STRONG>slk_noutrefresh</STRONG> because a <STRONG>wre-</STRONG>
- <STRONG>fresh</STRONG> is likely to follow soon.
+ <STRONG>slk_attr_set</STRONG>
+ returns an error if the terminal or the softkeys were not
+ initialized, or the color pair is outside the range
+ 0..<STRONG>COLOR_PAIRS</STRONG>-1.
+ <STRONG>slk_color</STRONG>
+ returns an error if the terminal or the softkeys were not
+ initialized, or the color pair is outside the range
+ 0..<STRONG>COLOR_PAIRS</STRONG>-1.
-</PRE>
-<H2>PORTABILITY</H2><PRE>
- The XSI Curses standard, Issue 4, describes these func-
- tions. It changes the argument type of the attribute-ma-
- nipulation functions <STRONG>slk_attron</STRONG>, <STRONG>slk_attroff</STRONG>, <STRONG>slk_attrset</STRONG>
- to be <STRONG>attr_t</STRONG>, and adds <STRONG>const</STRONG> qualifiers. The format codes
- <STRONG>2</STRONG> and <STRONG>3</STRONG> for <STRONG>slk_init()</STRONG> and the function <STRONG>slk_attr</STRONG> are spe-
- cific to ncurses.
+ <STRONG>slk_init</STRONG>
+ returns an error if the format parameter is outside the range
+ 0..3.
+ <STRONG>slk_label</STRONG>
+ returns <STRONG>NULL</STRONG> on error.
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <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>, <STRONG>curs_re-</STRONG>
- <STRONG><A HREF="curs_refresh.3x.html">fresh(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
+ <STRONG>slk_set</STRONG>
+ returns an error if the terminal or the softkeys were not
+ initialized, or the <EM>labnum</EM> parameter is outside the range of
+ label counts, or if the format parameter is outside the range
+ 0..2, or if memory for the labels cannot be allocated.
+
+
+</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
+ Most applications would use <STRONG>slk_noutrefresh</STRONG> because a <STRONG>wrefresh</STRONG> is
+ likely to follow soon.
+
+
+</PRE><H2><a name="h2-EXTENSIONS">EXTENSIONS</a></H2><PRE>
+ X/Open <EM>curses</EM> documents the <EM>opts</EM> argument as reserved for future use,
+ saying that it must be null. This implementation uses that parameter
+ in ABI 6 for the functions which have a color-pair parameter to support
+ extended color pairs.
+
+ For functions which modify the color, e.g., <STRONG>slk_attr_set</STRONG>, if <EM>opts</EM> is
+ set it is treated as a pointer to <STRONG>int</STRONG>, and used to set the color
+ pair instead of the <STRONG>short</STRONG> pair parameter.
+
+
+</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
+ The XSI <EM>curses</EM> standard, Issue 4, described the soft-key functions,
+ with some differences from SVr4 <EM>curses</EM>:
+
+ <STRONG>o</STRONG> It added functions like the SVr4 attribute-manipulation functions
+ <STRONG>slk_attron</STRONG>, <STRONG>slk_attroff</STRONG>, <STRONG>slk_attrset</STRONG>, but which use <STRONG>attr_t</STRONG>
+ parameters (rather than <STRONG>chtype</STRONG>), along with a reserved <EM>opts</EM>
+ parameter.
+
+ Two of these new functions (unlike the SVr4 functions) have no
+ provision for color: <STRONG>slk_attr_on</STRONG> and <STRONG>slk_attr_off</STRONG>.
+
+ The third function (<STRONG>slk_attr_set</STRONG>) has a color-pair parameter.
+
+ <STRONG>o</STRONG> It added <STRONG>const</STRONG> qualifiers to parameters (unnecessarily), and
+
+ <STRONG>o</STRONG> It added <STRONG>slk_color</STRONG>.
+
+ Although <STRONG>slk_start</STRONG> is declared in the <EM>curses</EM> header file, it was not
+ documented by SVr4 other than its presence in a list of libtermlib.so.1
+ symbols. Reading the source code (i.e., Illumos):
+
+ <STRONG>o</STRONG> <STRONG>slk_start</STRONG> has two parameters:
+
+ <STRONG>o</STRONG> <EM>ng</EM> (number of groups) and
+
+ <STRONG>o</STRONG> <EM>gp</EM> (group pointer).
+
+ <STRONG>o</STRONG> Soft-key groups are an array of <EM>ng</EM> integers.
+
+ <STRONG>o</STRONG> In SVr4, <STRONG>slk_init</STRONG> calls <STRONG>slk_start</STRONG> passing a null for <EM>gp</EM>. For this
+ case, <STRONG>slk_start</STRONG> uses the number of groups <EM>ng</EM> (3 for the 3-2-3
+ layout, 2 for the 4-4 layout) which <STRONG>slk_init</STRONG> provided.
+
+ If <EM>ng</EM> is neither 2 or 3, <STRONG>slk_start</STRONG> checks the terminfo <STRONG>fln</STRONG>
+ (label_format) capability, interpreting that as a comma-separated
+ list of numbers, e.g., "3,2,3" for the 3-2-3 layout.
+
+ Finally, if there is no <STRONG>fln</STRONG> capability, <STRONG>slk_start</STRONG> returns <STRONG>ERR</STRONG>.
+
+ <STRONG>o</STRONG> If <STRONG>slk_start</STRONG> is given a non-null <EM>gp</EM>, it copies the <EM>ng</EM> elements of
+ the group of soft-keys, up to 16.
+
+ If there are more than 16 elements, <STRONG>slk_start</STRONG> returns an error.
+
+ <STRONG>o</STRONG> The format codes <STRONG>2</STRONG> and <STRONG>3</STRONG> for <STRONG>slk_init</STRONG> were added by <EM>ncurses</EM> in
+ 1996. PDCurses 2.4 added this feature in 2001.
+
+ The function <STRONG>slk_attr</STRONG> was added by <EM>ncurses</EM> in 1996.
+
+ X/Open <EM>curses</EM> does not specify a limit for the number of colors and
+ color pairs which a terminal can support. However, in its use of <STRONG>short</STRONG>
+ for the parameters, it carries over SVr4's implementation detail for
+ the compiled terminfo database, which uses signed 16-bit numbers. This
+ implementation provides extended versions of those functions which use
+ <STRONG>int</STRONG> parameters, allowing applications to use larger color- and pair-
+ numbers.
+
+
+</PRE><H2><a name="h2-HISTORY">HISTORY</a></H2><PRE>
+ SVr3 introduced these functions:
+ <STRONG>slk_clear</STRONG>
+ <STRONG>slk_init</STRONG>
+ <STRONG>slk_label</STRONG>
+ <STRONG>slk_noutrefresh</STRONG>
+ <STRONG>slk_refresh</STRONG>
+ <STRONG>slk_restore</STRONG>
+ <STRONG>slk_set</STRONG>
+ <STRONG>slk_touch</STRONG>
+
+ SVr4 added these functions:
+ <STRONG>slk_attroff</STRONG>
+ <STRONG>slk_attron</STRONG>
+ <STRONG>slk_attrset</STRONG>
+ <STRONG>slk_start</STRONG>
+
+ X/Open <EM>curses</EM> added these:
+ <STRONG>slk_attr_off</STRONG>
+ <STRONG>slk_attr_on</STRONG>
+ <STRONG>slk_attr_set</STRONG>
+ <STRONG>slk_color</STRONG>
+ <STRONG>slk_wset</STRONG>
+
+
+</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_attr.3x.html">curs_attr(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>, <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>,
+ <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>
-
<STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
+
ncurses 6.4 2023-11-25 <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
</PRE>
-<HR>
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+<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-Initialization">Initialization</a></li>
+<li><a href="#h3-Labels">Labels</a></li>
+<li><a href="#h3-Screen-updates">Screen updates</a></li>
+<li><a href="#h3-Video-attributes">Video attributes</a></li>
+<li><a href="#h3-Colors">Colors</a></li>
+</ul>
+</li>
+<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
+<li><a href="#h2-NOTES">NOTES</a></li>
+<li><a href="#h2-EXTENSIONS">EXTENSIONS</a></li>
+<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
+<li><a href="#h2-HISTORY">HISTORY</a></li>
+<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
+</ul>
+</div>
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