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30 * @Id: curs_slk.3x,v 1.14 2005/05/15 16:19:06 tom Exp @
34 <TITLE>curs_slk 3x</TITLE>
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42 <!-- Manpage converted by man2html 3.0.1 -->
43 <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG> <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
50 <STRONG>slk_init</STRONG>, <STRONG>slk_set</STRONG>, <STRONG>slk_refresh</STRONG>, <STRONG>slk_noutrefresh</STRONG>,
51 <STRONG>slk_label</STRONG>, <STRONG>slk_clear</STRONG>, <STRONG>slk_restore</STRONG>, <STRONG>slk_touch</STRONG>, <STRONG>slk_attron</STRONG>,
52 <STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG>, <STRONG>slk_attr_on</STRONG>, <STRONG>slk_attr_set</STRONG>,
53 <STRONG>slk_attr_off</STRONG>, <STRONG>slk_attr</STRONG>, <STRONG>slk_color</STRONG> - <STRONG>curses</STRONG> soft label
58 <H2>SYNOPSIS</H2><PRE>
59 <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
61 <STRONG>int</STRONG> <STRONG>slk_init(int</STRONG> <STRONG>fmt);</STRONG>
62 <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>
63 <STRONG>int</STRONG> <STRONG>slk_refresh(void);</STRONG>
64 <STRONG>int</STRONG> <STRONG>slk_noutrefresh(void);</STRONG>
65 <STRONG>char</STRONG> <STRONG>*slk_label(int</STRONG> <STRONG>labnum);</STRONG>
66 <STRONG>int</STRONG> <STRONG>slk_clear(void);</STRONG>
67 <STRONG>int</STRONG> <STRONG>slk_restore(void);</STRONG>
68 <STRONG>int</STRONG> <STRONG>slk_touch(void);</STRONG>
69 <STRONG>int</STRONG> <STRONG>slk_attron(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
70 <STRONG>int</STRONG> <STRONG>slk_attroff(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
71 <STRONG>int</STRONG> <STRONG>slk_attrset(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
72 <STRONG>int</STRONG> <STRONG>slk_attr_on(attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
73 <STRONG>int</STRONG> <STRONG>slk_attr_off(const</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG> <STRONG>opts);</STRONG>
74 <STRONG>int</STRONG> <STRONG>slk_attr_set(const</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG>
75 <STRONG>short</STRONG> <STRONG>color_pair_number,</STRONG> <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
76 <STRONG>attr_t</STRONG> <STRONG>slk_attr(void);</STRONG>
77 <STRONG>int</STRONG> <STRONG>slk_color(short</STRONG> <STRONG>color_pair_number);</STRONG>
81 <H2>DESCRIPTION</H2><PRE>
82 The slk* functions manipulate the set of soft function-key
83 labels that exist on many terminals. For those terminals
84 that do not have soft labels, <STRONG>curses</STRONG> takes over the bottom
85 line of <STRONG>stdscr</STRONG>, reducing the size of <STRONG>stdscr</STRONG> and the vari-
86 able <STRONG>LINES</STRONG>. <STRONG>curses</STRONG> standardizes on eight labels of up to
87 eight characters each. In addition to this, the ncurses
88 implementation supports a mode where it simulates 12 la-
89 bels of up to five characters each. This is most common
90 for todays PC like enduser devices. Please note that
91 ncurses simulates this mode by taking over up to two lines
92 at the bottom of the screen, it doesn't try to use any
93 hardware support for this mode.
95 The <STRONG>slk_init</STRONG> routine must be called before <STRONG>initscr</STRONG> or
96 <STRONG>newterm</STRONG> is called. If <STRONG>initscr</STRONG> eventually uses a line from
97 <STRONG>stdscr</STRONG> to emulate the soft labels, then <EM>fmt</EM> determines how
98 the labels are arranged on the screen. Setting <EM>fmt</EM> to <STRONG>0</STRONG>
99 indicates a 3-2-3 arrangement of the labels, <STRONG>1</STRONG> indicates a
100 4-4 arrangement and <STRONG>2</STRONG> indicates the PC like 4-4-4 mode. If
101 <STRONG>fmt</STRONG> is set to <STRONG>3</STRONG>, it is again the PC like 4-4-4 mode, but
102 in addition an index line is generated, helping the user
103 to identify the key numbers easily.
105 The <STRONG>slk_set</STRONG> routine requires <EM>labnum</EM> to be a label number,
106 from <STRONG>1</STRONG> to <STRONG>8</STRONG> (resp. <STRONG>12</STRONG>); <EM>label</EM> must be the string to be put
107 on the label, up to eight (resp. five) characters in
108 length. A null string or a null pointer sets up a blank
109 label. <EM>fmt</EM> is either <STRONG>0</STRONG>, <STRONG>1</STRONG>, or <STRONG>2</STRONG>, indicating whether the
110 label is to be left-justified, centered, or right-justi-
111 fied, respectively, within the label.
113 The <STRONG>slk_refresh</STRONG> and <STRONG>slk_noutrefresh</STRONG> routines correspond to
114 the <STRONG>wrefresh</STRONG> and <STRONG>wnoutrefresh</STRONG> routines.
116 The <STRONG>slk_label</STRONG> routine returns the current label for label
117 number <EM>labnum</EM>, with leading and trailing blanks stripped.
119 The <STRONG>slk_clear</STRONG> routine clears the soft labels from the
122 The <STRONG>slk_restore</STRONG> routine restores the soft labels to the
123 screen after a <STRONG>slk_clear</STRONG> has been performed.
125 The <STRONG>slk_touch</STRONG> routine forces all the soft labels to be
126 output the next time a <STRONG>slk_noutrefresh</STRONG> is performed.
128 The <STRONG>slk_attron</STRONG>, <STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG> and <STRONG>slk_attr</STRONG> rou-
129 tines correspond to <STRONG>attron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>attroff</STRONG> and <STRONG>attr_get</STRONG>.
130 They have an effect only if soft labels are simulated on
131 the bottom line of the screen. The default highlight for
132 soft keys is A_STANDOUT (as in System V curses, which does
133 not document this fact).
135 The <STRONG>slk_color</STRONG> routine corresponds to <STRONG>color_set</STRONG>. It has an
136 effect only if soft labels are simulated on the bottom
142 <H2>RETURN VALUE</H2><PRE>
143 These routines return <STRONG>ERR</STRONG> upon failure and OK (SVr4 speci-
144 fies only "an integer value other than <STRONG>ERR</STRONG>") upon success-
147 X/Open defines no error conditions. In this implementa-
150 <STRONG>slk_attr</STRONG>
151 returns the attribute used for the soft keys.
153 <STRONG>slk_attroff</STRONG>, <STRONG>slk_attron</STRONG>, <STRONG>slk_clear</STRONG>,
154 <STRONG>slk_noutrefresh</STRONG>, <STRONG>slk_refresh</STRONG>, <STRONG>slk_touch</STRONG>
155 return an error if the terminal or the soft-
156 keys were not initialized.
158 <STRONG>slk_attrset</STRONG>
159 returns an error if the terminal or the soft-
160 keys were not initialized.
162 <STRONG>slk_attr_set</STRONG>
163 returns an error if the terminal or the soft-
164 keys were not initialized, or the color pair
165 is outside the range 0..COLOR_PAIRS-1, or opts
168 <STRONG>slk_color</STRONG>
169 returns an error if the terminal or the soft-
170 keys were not initialized, or the color pair
171 is outside the range 0..COLOR_PAIRS-1.
173 <STRONG>slk_init</STRONG>
174 returns an error if the format parameter is
175 outside the range 0..3.
177 <STRONG>slk_label</STRONG>
178 returns <STRONG>NULL</STRONG> on error.
180 <STRONG>slk_set</STRONG>
181 returns an error if the terminal or the soft-
182 keys were not initialized, or the <EM>labnum</EM> pa-
183 rameter is outside the range of label counts,
184 or if the format parameter is outside the
185 range 0..2, or if memory for the labels cannot
191 Most applications would use <STRONG>slk_noutrefresh</STRONG> because a <STRONG>wre-</STRONG>
192 <STRONG>fresh</STRONG> is likely to follow soon.
196 <H2>PORTABILITY</H2><PRE>
197 The XSI Curses standard, Issue 4, describes these func-
198 tions. It changes the argument type of the attribute-ma-
199 nipulation functions <STRONG>slk_attron</STRONG>, <STRONG>slk_attroff</STRONG>, <STRONG>slk_attrset</STRONG>
200 to be <STRONG>attr_t</STRONG>, and adds <STRONG>const</STRONG> qualifiers. The format codes
201 <STRONG>2</STRONG> and <STRONG>3</STRONG> for <STRONG>slk_init()</STRONG> and the function <STRONG>slk_attr</STRONG> are spe-
206 <H2>SEE ALSO</H2><PRE>
207 <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>
208 <STRONG><A HREF="curs_refresh.3x.html">fresh(3x)</A></STRONG>
212 <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
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