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34 <TITLE>curs_slk 3x</TITLE>
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39 <H1>curs_slk 3x</H1>
40 <HR>
41 <PRE>
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>
44
45
46
47
48 </PRE>
49 <H2>NAME</H2><PRE>
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 rou-
54        tines
55
56
57 </PRE>
58 <H2>SYNOPSIS</H2><PRE>
59        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
60
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>
78
79
80 </PRE>
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
89        labels 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.
94
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.
104
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.
112
113        The <STRONG>slk_refresh</STRONG> and <STRONG>slk_noutrefresh</STRONG> routines correspond to
114        the <STRONG>wrefresh</STRONG> and <STRONG>wnoutrefresh</STRONG> routines.
115
116        The  <STRONG>slk_label</STRONG> routine returns the current label for label
117        number <EM>labnum</EM>, with leading and trailing blanks  stripped.
118
119        The  <STRONG>slk_clear</STRONG>  routine  clears  the  soft labels from the
120        screen.
121
122        The <STRONG>slk_restore</STRONG> routine restores the soft  labels  to  the
123        screen after a <STRONG>slk_clear</STRONG> has been performed.
124
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.
127
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).
134
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
137        line of the screen.
138
139
140
141 </PRE>
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-
145        ful  completion.  <STRONG>slk_attr</STRONG>  returns the attribute used for
146        the soft keys.
147
148        <STRONG>slk_label</STRONG> returns <STRONG>NULL</STRONG> on error.
149
150
151 </PRE>
152 <H2>NOTES</H2><PRE>
153        Most applications would use <STRONG>slk_noutrefresh</STRONG> because a <STRONG>wre-</STRONG>
154        <STRONG>fresh</STRONG> is likely to follow soon.
155
156
157 </PRE>
158 <H2>PORTABILITY</H2><PRE>
159        The  XSI  Curses  standard, Issue 4, describes these func-
160        tions.  It changes the argument  type  of  the  attribute-
161        manipulation     functions     <STRONG>slk_attron</STRONG>,    <STRONG>slk_attroff</STRONG>,
162        <STRONG>slk_attrset</STRONG> to be <STRONG>attr_t</STRONG>, and adds <STRONG>const</STRONG>  qualifiers.  The
163        format  codes  <STRONG>2</STRONG>  and  <STRONG>3</STRONG>  for  <STRONG>slk_init()</STRONG> and the function
164        <STRONG>slk_attr</STRONG> are specific to ncurses.
165
166
167 </PRE>
168 <H2>SEE ALSO</H2><PRE>
169        <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>,
170        <STRONG><A HREF="curs_refresh.3x.html">curs_refresh(3x)</A></STRONG>
171
172
173
174                                                      <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
175 </PRE>
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