ncurses 6.2 - patch 20210626
[ncurses.git] / doc / html / man / form_field.3x.html
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31   * @Id: form_field.3x,v 1.17 2020/10/24 09:10:45 tom Exp @
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33 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
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38 <TITLE>form_field 3x</TITLE>
39 <link rel="author" href="mailto:bug-ncurses@gnu.org">
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42 <BODY>
43 <H1 class="no-header">form_field 3x</H1>
44 <PRE>
45 <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>                                                  <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
46
47
48
49
50 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
51        <STRONG>form_field</STRONG> - make and break connections between fields and forms
52
53
54 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
55        <STRONG>#include</STRONG> <STRONG>&lt;form.h&gt;</STRONG>
56
57        <STRONG>int</STRONG> <STRONG>set_form_fields(FORM</STRONG> <STRONG>*</STRONG><EM>form</EM><STRONG>,</STRONG> <STRONG>FIELD</STRONG> <STRONG>**</STRONG><EM>fields</EM><STRONG>);</STRONG>
58        <STRONG>FIELD</STRONG> <STRONG>**form_fields(const</STRONG> <STRONG>FORM</STRONG> <STRONG>*</STRONG><EM>form</EM><STRONG>);</STRONG>
59        <STRONG>int</STRONG> <STRONG>field_count(const</STRONG> <STRONG>FORM</STRONG> <STRONG>*</STRONG><EM>form</EM><STRONG>);</STRONG>
60        <STRONG>int</STRONG> <STRONG>move_field(FIELD</STRONG> <STRONG>*</STRONG><EM>field</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>frow</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>fcol</EM><STRONG>);</STRONG>
61
62
63 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
64        The  function  <STRONG>set_form_fields</STRONG>  changes  the field pointer array of the
65        given <EM>form</EM>.  The array must be terminated by a <STRONG>NULL</STRONG>.
66
67        The function <STRONG>form_fields</STRONG> returns the field array of the given form.
68
69        The function <STRONG>field_count</STRONG> returns the count of fields in <EM>form</EM>.
70
71        The  function  <STRONG>move_field</STRONG>  moves  the  given  field  (which   must   be
72        disconnected) to a specified location on the screen.
73
74
75 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
76        The  function  <STRONG>form_fields</STRONG>  returns  a pointer (which may be <STRONG>NULL</STRONG>).  It
77        does not set <STRONG>errno</STRONG>.
78
79        The function <STRONG>field_count</STRONG> returns <STRONG>ERR</STRONG> if the <EM>form</EM> parameter is <STRONG>NULL</STRONG>.
80
81        The  functions  <STRONG>set_form_fields</STRONG>  and  <STRONG>move_field</STRONG>  return  one  of   the
82        following codes on error:
83
84        <STRONG>E_OK</STRONG> The routine succeeded.
85
86        <STRONG>E_BAD_ARGUMENT</STRONG>
87             Routine detected an incorrect or out-of-range argument.
88
89        <STRONG>E_CONNECTED</STRONG>
90             The field is already connected to a form.
91
92        <STRONG>E_POSTED</STRONG>
93             The form is already posted.
94
95        <STRONG>E_SYSTEM_ERROR</STRONG>
96             System error occurred (see <STRONG>errno(3)</STRONG>).
97
98
99 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
100        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>.
101
102
103 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
104        The  header  file  <STRONG>&lt;form.h&gt;</STRONG>  automatically  includes  the  header  file
105        <STRONG>&lt;curses.h&gt;</STRONG>.
106
107
108 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
109        These routines emulate the System  V  forms  library.   They  were  not
110        supported on Version 7 or BSD versions.
111
112        The  SVr4  forms  library documentation specifies the <STRONG>field_count</STRONG> error
113        value as -1 (which is the value of <STRONG>ERR</STRONG>).
114
115
116 </PRE><H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
117        Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S.
118        Raymond.
119
120
121
122                                                                 <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
123 </PRE>
124 <div class="nav">
125 <ul>
126 <li><a href="#h2-NAME">NAME</a></li>
127 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
128 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
129 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
130 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
131 <li><a href="#h2-NOTES">NOTES</a></li>
132 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
133 <li><a href="#h2-AUTHORS">AUTHORS</a></li>
134 </ul>
135 </div>
136 </BODY>
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