doc/html/man/form.3x.html

   1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
   2 <!--
   3   * t
   4   ****************************************************************************
   5   * Copyright (c) 1998,2002 Free Software Foundation, Inc.                   *
   6   *                                                                          *
   7   * Permission is hereby granted, free of charge, to any person obtaining a  *
   8   * copy of this software and associated documentation files (the            *
   9   * "Software"), to deal in the Software without restriction, including      *
  10   * without limitation the rights to use, copy, modify, merge, publish,      *
  11   * distribute, distribute with modifications, sublicense, and/or sell       *
  12   * copies of the Software, and to permit persons to whom the Software is    *
  13   * furnished to do so, subject to the following conditions:                 *
  14   *                                                                          *
  15   * The above copyright notice and this permission notice shall be included  *
  16   * in all copies or substantial portions of the Software.                   *
  17   *                                                                          *
  18   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  19   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  20   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  21   * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  22   * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  23   * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  24   * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  25   *                                                                          *
  26   * Except as contained in this notice, the name(s) of the above copyright   *
  27   * holders shall not be used in advertising or otherwise to promote the     *
  28   * sale, use or other dealings in this Software without prior written       *
  29   * authorization.                                                           *
  30   ****************************************************************************
  31   * @Id: form.3x,v 1.15 2002/01/19 22:48:05 tom Exp @
  32 -->
  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
  74    <STRONG>Current</STRONG> <STRONG>Default</STRONG> <STRONG>Values</STRONG> <STRONG>for</STRONG> <STRONG>Field</STRONG> <STRONG>Attributes</STRONG>
  75        The  <STRONG>form</STRONG>  library  maintains  a  default  value for field
  76        attributes.  You can get or set this  default  by  calling
  77        the  appropriate  <STRONG>set_</STRONG>  or  retrieval  routine with a <STRONG>NULL</STRONG>
  78        field pointer.  Changing this default with a <STRONG>set_</STRONG> function
  79        affects  future  field  creations, but does not change the
  80        rendering of fields already created.
  81
  82
  83    <STRONG>Routine</STRONG> <STRONG>Name</STRONG> <STRONG>Index</STRONG>
  84        The following table lists each <STRONG>form</STRONG> routine and  the  name
  85        of the manual page on which it is described.
  86
  87        <STRONG>curses</STRONG> Routine Name    Manual Page Name
  88        -------------------------------------------------
  89        current_field          <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
  90        data_ahead             <STRONG><A HREF="form_data.3x.html">form_data(3x)</A></STRONG>
  91        data_behind            <STRONG><A HREF="form_data.3x.html">form_data(3x)</A></STRONG>
  92        dup_field              <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
  93        dynamic_fieldinfo      <STRONG><A HREF="form_field_info.3x.html">form_field_info(3x)</A></STRONG>
  94        field_arg              <STRONG><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></STRONG>
  95        field_back             <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
  96        field_buffer           <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
  97        field_count            <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
  98        field_fore             <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
  99        field_index            <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
 100        field_info             <STRONG><A HREF="form_field_info.3x.html">form_field_info(3x)</A></STRONG>
 101        field_init             <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 102        field_just             <STRONG><A HREF="form_field_just.3x.html">form_field_just(3x)</A></STRONG>
 103        field_opts             <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
 104        field_opts_off         <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
 105        field_opts_on          <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
 106        field_pad              <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
 107        field_status           <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
 108        field_term             <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 109        field_type             <STRONG><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></STRONG>
 110        field_userptr          <STRONG><A HREF="form_field_userptr.3x.html">form_field_userptr(3x)</A></STRONG>
 111        form_driver            <STRONG><A HREF="form_driver.3x.html">form_driver(3x)</A></STRONG>
 112        form_fields            <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
 113        form_init              <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 114        form_opts              <STRONG><A HREF="form_opts.3x.html">form_opts(3x)</A></STRONG>
 115
 116        form_opts_off          <STRONG><A HREF="form_opts.3x.html">form_opts(3x)</A></STRONG>
 117        form_opts_on           <STRONG><A HREF="form_opts.3x.html">form_opts(3x)</A></STRONG>
 118        form_page              <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
 119        form_request_by_name   <STRONG><A HREF="form_requestname.3x.html">form_requestname(3x)</A></STRONG>
 120        form_request_name      <STRONG><A HREF="form_requestname.3x.html">form_requestname(3x)</A></STRONG>
 121        form_sub               <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
 122        form_term              <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 123        form_userptr           <STRONG><A HREF="form_userptr.3x.html">form_userptr(3x)</A></STRONG>
 124        form_win               <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
 125        free_field             <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
 126        free_form              <STRONG><A HREF="form_new.3x.html">form_new(3x)</A></STRONG>
 127        link_field             <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
 128        link_fieldtype         <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>
 129        move_field             <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
 130        new_field              <STRONG><A HREF="form_field_new.3x.html">form_field_new(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.  Rou-
 166        tines that return an integer return one of  the  following
 167        error codes:
 168
 169        <STRONG>E_OK</STRONG> The routine succeeded.
 170
 171        <STRONG>E_CONNECTED</STRONG>
 172             The field is already connected to a form.
 173
 174        <STRONG>E_SYSTEM_ERROR</STRONG>
 175             System error occurred (see <STRONG>errno</STRONG>).
 176
 177        <STRONG>E_BAD_ARGUMENT</STRONG>
 178             Routine  detected  an incorrect or out-of-range argu-
 179             ment.
 180
 181        <STRONG>E_POSTED</STRONG>
 182             The form is already posted.
 183
 184        <STRONG>E_BAD_STATE</STRONG>
 185             Routine was called from an initialization or termina-
 186             tion function.
 187
 188        <STRONG>E_NO_ROOM</STRONG>
 189             Form is too large for its window.
 190
 191        <STRONG>E_NOT_POSTED</STRONG>
 192             The form has not been posted.
 193
 194        <STRONG>E_UNKNOWN_COMMAND</STRONG>
 195             The form driver code saw an unknown request code.
 196
 197        <STRONG>E_INVALID_FIELD</STRONG>
 198             Contents of a field are not valid.
 199
 200        <STRONG>E_NOT_CONNECTED</STRONG>
 201             No fields are connected to the form.
 202
 203        <STRONG>E_REQUEST_DENIED</STRONG>
 204             The form driver could not process the request.
 205
 206
 207 </PRE>
 208 <H2>SEE ALSO</H2><PRE>
 209        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG> and related pages whose names begin "form_" for
 210        detailed descriptions of the entry points.
 211
 212
 213 </PRE>
 214 <H2>NOTES</H2><PRE>
 215        The header file <STRONG>&lt;form.h&gt;</STRONG> automatically includes the header
 216        files <STRONG>&lt;curses.h&gt;</STRONG> and <STRONG>&lt;eti.h&gt;</STRONG>.
 217
 218        In  your  library  list,  libform.a should be before libn-
 219        curses.a; that is, you want to say `-lform -lncurses', not
 220        the  other  way  around (which would give you a link error
 221        using GNU <STRONG><A HREF="ld.1.html">ld(1)</A></STRONG> and many other linkers).
 222
 223
 224 </PRE>
 225 <H2>PORTABILITY</H2><PRE>
 226        These routines emulate the System V forms  library.   They
 227        were not supported on Version 7 or BSD versions.
 228
 229
 230 </PRE>
 231 <H2>AUTHORS</H2><PRE>
 232        Juergen  Pfeifer.  Manual pages and adaptation for ncurses
 233        by Eric S. Raymond.
 234
 235
 236
 237                                                          <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>
 238 </PRE>
 239 <HR>
 240 <ADDRESS>
 241 Man(1) output converted with
 242 <a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
 243 </ADDRESS>
 244 </BODY>
 245 </HTML>