ncurses 5.6 - patch 20061230
[ncurses.git] / doc / html / man / form.3x.html
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31   * @Id: form.3x,v 1.20 2006/11/04 18:50:09 tom Exp @
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33 <HTML>
34 <HEAD>
35 <TITLE>form 3x</TITLE>
36 <link rev=made href="mailto:bug-ncurses@gnu.org">
37 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
38 </HEAD>
39 <BODY>
40 <H1>form 3x</H1>
41 <HR>
42 <PRE>
43 <!-- Manpage converted by man2html 3.0.1 -->
44 <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>                                                       <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>
45
46
47
48
49 </PRE>
50 <H2>NAME</H2><PRE>
51        <STRONG>form</STRONG> - curses extension for programming forms
52
53
54 </PRE>
55 <H2>SYNOPSIS</H2><PRE>
56        <STRONG>#include</STRONG> <STRONG>&lt;form.h&gt;</STRONG>
57
58
59 </PRE>
60 <H2>DESCRIPTION</H2><PRE>
61        The  <STRONG>form</STRONG> library provides terminal-independent facilities
62        for composing form screens  on  character-cell  terminals.
63        The  library  includes:  field  routines, which create and
64        modify form fields; and form routines, which group  fields
65        into forms, display forms on the screen, and handle inter-
66        action with the user.
67
68        The <STRONG>form</STRONG> library uses the <STRONG>curses</STRONG> libraries, and  a  curses
69        initialization  routine  such  as  <STRONG>initscr</STRONG>  must be called
70        before using any of these  functions.   To  use  the  <STRONG>form</STRONG>
71        library, link with the options <STRONG>-lform</STRONG> <STRONG>-lcurses</STRONG>.
72
73    <STRONG>Current</STRONG> <STRONG>Default</STRONG> <STRONG>Values</STRONG> <STRONG>for</STRONG> <STRONG>Field</STRONG> <STRONG>Attributes</STRONG>
74        The  <STRONG>form</STRONG>  library  maintains  a  default  value for field
75        attributes.  You can get or set this  default  by  calling
76        the  appropriate  <STRONG>set_</STRONG>  or  retrieval  routine with a <STRONG>NULL</STRONG>
77        field pointer.  Changing this default with a <STRONG>set_</STRONG> function
78        affects  future  field  creations, but does not change the
79        rendering of fields already created.
80
81    <STRONG>Routine</STRONG> <STRONG>Name</STRONG> <STRONG>Index</STRONG>
82        The following table lists each <STRONG>form</STRONG> routine and  the  name
83        of the manual page on which it is described.
84
85        <STRONG>curses</STRONG> Routine Name    Manual Page Name
86        -------------------------------------------------
87        current_field          <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
88        data_ahead             <STRONG><A HREF="form_data.3x.html">form_data(3x)</A></STRONG>
89        data_behind            <STRONG><A HREF="form_data.3x.html">form_data(3x)</A></STRONG>
90        dup_field              <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
91        dynamic_fieldinfo      <STRONG><A HREF="form_field_info.3x.html">form_field_info(3x)</A></STRONG>
92        field_arg              <STRONG><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></STRONG>
93        field_back             <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
94        field_buffer           <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
95        field_count            <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
96        field_fore             <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
97        field_index            <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
98        field_info             <STRONG><A HREF="form_field_info.3x.html">form_field_info(3x)</A></STRONG>
99        field_init             <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
100        field_just             <STRONG><A HREF="form_field_just.3x.html">form_field_just(3x)</A></STRONG>
101        field_opts             <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
102        field_opts_off         <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
103        field_opts_on          <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
104        field_pad              <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
105        field_status           <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
106        field_term             <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
107        field_type             <STRONG><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></STRONG>
108        field_userptr          <STRONG><A HREF="form_field_userptr.3x.html">form_field_userptr(3x)</A></STRONG>
109        form_driver            <STRONG><A HREF="form_driver.3x.html">form_driver(3x)</A></STRONG>
110        form_fields            <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
111        form_init              <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
112        form_opts              <STRONG><A HREF="form_opts.3x.html">form_opts(3x)</A></STRONG>
113        form_opts_off          <STRONG><A HREF="form_opts.3x.html">form_opts(3x)</A></STRONG>
114        form_opts_on           <STRONG><A HREF="form_opts.3x.html">form_opts(3x)</A></STRONG>
115
116        form_page              <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
117        form_request_by_name   <STRONG><A HREF="form_requestname.3x.html">form_requestname(3x)</A></STRONG>
118        form_request_name      <STRONG><A HREF="form_requestname.3x.html">form_requestname(3x)</A></STRONG>
119        form_sub               <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
120        form_term              <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
121        form_userptr           <STRONG><A HREF="form_userptr.3x.html">form_userptr(3x)</A></STRONG>
122        form_win               <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
123        free_field             <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
124        free_fieldtype         <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>
125        free_form              <STRONG><A HREF="form_new.3x.html">form_new(3x)</A></STRONG>
126        link_field             <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
127        link_fieldtype         <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>
128        move_field             <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
129        new_field              <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
130        new_fieldtype          <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>
131        new_form               <STRONG><A HREF="form_new.3x.html">form_new(3x)</A></STRONG>
132        new_page               <STRONG><A HREF="form_new_page.3x.html">form_new_page(3x)</A></STRONG>
133        pos_form_cursor        <STRONG><A HREF="form_cursor.3x.html">form_cursor(3x)</A></STRONG>
134        post_form              <STRONG><A HREF="form_post.3x.html">form_post(3x)</A></STRONG>
135        scale_form             <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
136        set_current_field      <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
137        set_field_back         <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
138        set_field_buffer       <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
139        set_field_fore         <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
140        set_field_init         <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
141        set_field_just         <STRONG><A HREF="form_field_just.3x.html">form_field_just(3x)</A></STRONG>
142        set_field_opts         <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
143        set_field_pad          <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
144        set_field_status       <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
145        set_field_term         <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
146        set_field_type         <STRONG><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></STRONG>
147        set_field_userptr      <STRONG><A HREF="form_field_userptr.3x.html">form_field_userptr(3x)</A></STRONG>
148        set_fieldtype_arg      <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>
149        set_fieldtype_choice   <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>
150        set_form_fields        <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
151        set_form_init          <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
152        set_form_opts          <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
153        set_form_page          <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
154        set_form_sub           <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
155        set_form_term          <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
156        set_form_userptr       <STRONG><A HREF="form_userptr.3x.html">form_userptr(3x)</A></STRONG>
157        set_form_win           <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
158        set_max_field          <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
159        set_new_page           <STRONG><A HREF="form_new_page.3x.html">form_new_page(3x)</A></STRONG>
160        unpost_form            <STRONG><A HREF="form_post.3x.html">form_post(3x)</A></STRONG>
161
162
163 </PRE>
164 <H2>RETURN VALUE</H2><PRE>
165        Routines  that  return  pointers return <STRONG>NULL</STRONG> on error, and
166        set errno to  the  corresponding  error-code  returned  by
167        functions  returning  an integer.  Routines that return an
168        integer return one of the following error codes:
169
170        <STRONG>E_OK</STRONG> The routine succeeded.
171
172        <STRONG>E_BAD_ARGUMENT</STRONG>
173             Routine detected an incorrect or  out-of-range  argu-
174             ment.
175
176        <STRONG>E_BAD_STATE</STRONG>
177             Routine was called from an initialization or termina-
178             tion function.
179
180        <STRONG>E_CONNECTED</STRONG>
181             The field is already connected to a form.
182
183        <STRONG>E_INVALID_FIELD</STRONG>
184             Contents of a field are not valid.
185
186        <STRONG>E_NOT_CONNECTED</STRONG>
187             No fields are connected to the form.
188
189        <STRONG>E_NOT_POSTED</STRONG>
190             The form has not been posted.
191
192        <STRONG>E_NO_ROOM</STRONG>
193             Form is too large for its window.
194
195        <STRONG>E_POSTED</STRONG>
196             The form is already posted.
197
198        <STRONG>E_REQUEST_DENIED</STRONG>
199             The form driver could not process the request.
200
201        <STRONG>E_SYSTEM_ERROR</STRONG>
202             System error occurred (see <STRONG>errno</STRONG>).
203
204        <STRONG>E_UNKNOWN_COMMAND</STRONG>
205             The form driver code saw an unknown request code.
206
207
208 </PRE>
209 <H2>SEE ALSO</H2><PRE>
210        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG> and related pages whose names begin "form_" for
211        detailed descriptions of the entry points.
212
213
214 </PRE>
215 <H2>NOTES</H2><PRE>
216        The header file <STRONG>&lt;form.h&gt;</STRONG> automatically includes the header
217        files <STRONG>&lt;curses.h&gt;</STRONG> and <STRONG>&lt;eti.h&gt;</STRONG>.
218
219        In your library list, libform.a  should  be  before  libn-
220        curses.a; that is, you want to say `-lform -lncurses', not
221        the other way around (which would give you  a  link  error
222        using most linkers).
223
224
225 </PRE>
226 <H2>PORTABILITY</H2><PRE>
227        These  routines  emulate the System V forms library.  They
228        were not supported on Version 7 or BSD versions.
229
230
231 </PRE>
232 <H2>AUTHORS</H2><PRE>
233        Juergen Pfeifer.  Manual pages and adaptation for  ncurses
234        by Eric S. Raymond.
235
236
237 </PRE>
238 <H2>SEE ALSO</H2><PRE>
239        This describes <STRONG>ncurses</STRONG> version 5.6 (patch 20061224).
240
241
242
243                                                                <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>
244 </PRE>
245 <HR>
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