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  35 <TITLE>form 3x</TITLE>
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  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
  88        <STRONG>curses</STRONG> Routine Name    Manual Page Name
  89        -------------------------------------------------
  90        current_field          <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
  91        data_ahead             <STRONG><A HREF="form_data.3x.html">form_data(3x)</A></STRONG>
  92        data_behind            <STRONG><A HREF="form_data.3x.html">form_data(3x)</A></STRONG>
  93        dup_field              <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
  94        dynamic_fieldinfo      <STRONG><A HREF="form_field_info.3x.html">form_field_info(3x)</A></STRONG>
  95        field_arg              <STRONG><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></STRONG>
  96        field_back             <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
  97        field_buffer           <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
  98        field_count            <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
  99        field_fore             <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
 100        field_index            <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
 101        field_info             <STRONG><A HREF="form_field_info.3x.html">form_field_info(3x)</A></STRONG>
 102        field_init             <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 103        field_just             <STRONG><A HREF="form_field_just.3x.html">form_field_just(3x)</A></STRONG>
 104        field_opts             <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
 105        field_opts_off         <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
 106        field_opts_on          <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
 107        field_pad              <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
 108        field_status           <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
 109        field_term             <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 110        field_type             <STRONG><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></STRONG>
 111        field_userptr          <STRONG><A HREF="form_field_userptr.3x.html">form_field_userptr(3x)</A></STRONG>
 112        form_driver            <STRONG><A HREF="form_driver.3x.html">form_driver(3x)</A></STRONG>
 113        form_fields            <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
 114        form_init              <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 115
 116        form_opts              <STRONG><A HREF="form_opts.3x.html">form_opts(3x)</A></STRONG>
 117        form_opts_off          <STRONG><A HREF="form_opts.3x.html">form_opts(3x)</A></STRONG>
 118        form_opts_on           <STRONG><A HREF="form_opts.3x.html">form_opts(3x)</A></STRONG>
 119        form_page              <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
 120        form_request_by_name   <STRONG><A HREF="form_requestname.3x.html">form_requestname(3x)</A></STRONG>
 121        form_request_name      <STRONG><A HREF="form_requestname.3x.html">form_requestname(3x)</A></STRONG>
 122        form_sub               <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
 123        form_term              <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 124        form_userptr           <STRONG><A HREF="form_userptr.3x.html">form_userptr(3x)</A></STRONG>
 125        form_win               <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
 126        free_field             <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
 127        free_form              <STRONG><A HREF="form_new.3x.html">form_new(3x)</A></STRONG>
 128        link_field             <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
 129        link_fieldtype         <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>
 130        move_field             <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
 131        new_field              <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
 132        new_form               <STRONG><A HREF="form_new.3x.html">form_new(3x)</A></STRONG>
 133        new_page               <STRONG><A HREF="form_new_page.3x.html">form_new_page(3x)</A></STRONG>
 134        pos_form_cursor        <STRONG><A HREF="form_cursor.3x.html">form_cursor(3x)</A></STRONG>
 135        post_form              <STRONG><A HREF="form_post.3x.html">form_post(3x)</A></STRONG>
 136        scale_form             <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
 137        set_current_field      <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
 138        set_field_back         <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
 139        set_field_buffer       <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
 140        set_field_fore         <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
 141        set_field_init         <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 142        set_field_just         <STRONG><A HREF="form_field_just.3x.html">form_field_just(3x)</A></STRONG>
 143        set_field_opts         <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
 144        set_field_pad          <STRONG><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></STRONG>
 145        set_field_status       <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
 146        set_field_term         <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 147        set_field_type         <STRONG><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></STRONG>
 148        set_field_userptr      <STRONG><A HREF="form_field_userptr.3x.html">form_field_userptr(3x)</A></STRONG>
 149        set_fieldtype_arg      <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>
 150        set_fieldtype_choice   <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>
 151        set_form_fields        <STRONG><A HREF="form_field.3x.html">form_field(3x)</A></STRONG>
 152        set_form_init          <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 153        set_form_opts          <STRONG><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></STRONG>
 154        set_form_page          <STRONG><A HREF="form_page.3x.html">form_page(3x)</A></STRONG>
 155        set_form_sub           <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
 156        set_form_term          <STRONG><A HREF="form_hook.3x.html">form_hook(3x)</A></STRONG>
 157        set_form_userptr       <STRONG><A HREF="form_userptr.3x.html">form_userptr(3x)</A></STRONG>
 158        set_form_win           <STRONG><A HREF="form_win.3x.html">form_win(3x)</A></STRONG>
 159        set_max_field          <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>
 160        set_new_page           <STRONG><A HREF="form_new_page.3x.html">form_new_page(3x)</A></STRONG>
 161        unpost_form            <STRONG><A HREF="form_post.3x.html">form_post(3x)</A></STRONG>
 162
 163
 164 </PRE>
 165 <H2>RETURN VALUE</H2><PRE>
 166        Routines  that return pointers return <STRONG>NULL</STRONG> on error.  Rou-
 167        tines that return an integer return one of  the  following
 168        error codes:
 169
 170        <STRONG>E_OK</STRONG> The routine succeeded.
 171
 172        <STRONG>E_CONNECTED</STRONG>
 173             The field is already connected to a form.
 174
 175        <STRONG>E_SYSTEM_ERROR</STRONG>
 176             System error occurred (see <STRONG>errno</STRONG>).
 177
 178        <STRONG>E_BAD_ARGUMENT</STRONG>
 179             Routine  detected  an incorrect or out-of-range argu-
 180             ment.
 181
 182        <STRONG>E_POSTED</STRONG>
 183             The form is already posted.
 184
 185        <STRONG>E_BAD_STATE</STRONG>
 186             Routine was called from an initialization or termina-
 187             tion function.
 188
 189        <STRONG>E_NO_ROOM</STRONG>
 190             Form is too large for its window.
 191
 192        <STRONG>E_NOT_POSTED</STRONG>
 193             The form has not been posted.
 194
 195        <STRONG>E_UNKNOWN_COMMAND</STRONG>
 196             The form driver code saw an unknown request code.
 197
 198        <STRONG>E_INVALID_FIELD</STRONG>
 199             Contents of a field are not valid.
 200
 201        <STRONG>E_NOT_CONNECTED</STRONG>
 202             No fields are connected to the form.
 203
 204        <STRONG>E_REQUEST_DENIED</STRONG>
 205             The form driver could not process the request.
 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 GNU <STRONG><A HREF="ld.1.html">ld(1)</A></STRONG> and many other 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
 238                                                                <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>
 239 </PRE>
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