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  43 <H1 class="no-header">form_field_new 3x</H1>
  44 <PRE>
  45 <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>                                          <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
  46
  47
  48
  49
  50 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
  51        <STRONG>new_field</STRONG>,  <STRONG>dup_field</STRONG>, <STRONG>link_field</STRONG>, <STRONG>free_field</STRONG> - create and destroy form
  52        fields
  53
  54
  55 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
  56        <STRONG>#include</STRONG> <STRONG>&lt;form.h&gt;</STRONG>
  57
  58        <STRONG>FIELD</STRONG> <STRONG>*new_field(int</STRONG> <EM>height</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>width</EM><STRONG>,</STRONG>
  59                         <STRONG>int</STRONG> <EM>toprow</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>leftcol</EM><STRONG>,</STRONG>
  60                         <STRONG>int</STRONG> <EM>offscreen</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>nbuffers</EM><STRONG>);</STRONG>
  61        <STRONG>FIELD</STRONG> <STRONG>*dup_field(FIELD</STRONG> <STRONG>*</STRONG><EM>field</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>toprow</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>leftcol</EM><STRONG>);</STRONG>
  62        <STRONG>FIELD</STRONG> <STRONG>*link_field(FIELD</STRONG> <STRONG>*</STRONG><EM>field</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>toprow</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>leftcol</EM><STRONG>);</STRONG>
  63        <STRONG>int</STRONG> <STRONG>free_field(FIELD</STRONG> <STRONG>*</STRONG><EM>field</EM><STRONG>);</STRONG>
  64
  65
  66 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
  67        The function <STRONG>new_field</STRONG> allocates a new field and  initializes  it  from
  68        the  parameters  given: height, width, row of upper-left corner, column
  69        of upper-left corner, number off-screen rows, and number of  additional
  70        working buffers.
  71
  72        The  function  <STRONG>dup_field</STRONG>  duplicates  a  field at a new location.  Most
  73        attributes (including current contents, size, validation  type,  buffer
  74        count,  growth  threshold,  justification,  foreground, background, pad
  75        character, options, and user pointer) are copied.  Field status and the
  76        field page bit are not copied.
  77
  78        The  function  <STRONG>link_field</STRONG> acts like <STRONG>dup_field</STRONG>, but the new field shares
  79        buffers with its parent.  Attribute data is separate.
  80
  81        The function <STRONG>free_field</STRONG> de-allocates storage associated with a field.
  82
  83
  84 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
  85        The functions <STRONG>new_field</STRONG>, <STRONG>dup_field</STRONG>, <STRONG>link_field</STRONG> return  <STRONG>NULL</STRONG>  on  error.
  86        They set <STRONG>errno</STRONG> according to their success:
  87
  88        <STRONG>E_OK</STRONG> The routine succeeded.
  89
  90        <STRONG>E_BAD_ARGUMENT</STRONG>
  91             Routine detected an incorrect or out-of-range argument.
  92
  93        <STRONG>E_SYSTEM_ERROR</STRONG>
  94             System error occurred, e.g., malloc failure.
  95
  96        The function <STRONG>free_field</STRONG> returns one of the following:
  97
  98        <STRONG>E_OK</STRONG> The routine succeeded.
  99
 100        <STRONG>E_BAD_ARGUMENT</STRONG>
 101             Routine detected an incorrect or out-of-range argument.
 102
 103        <STRONG>E_CONNECTED</STRONG>
 104             field is connected.
 105
 106
 107 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
 108        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>.
 109
 110
 111 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
 112        The  header  file  <STRONG>&lt;form.h&gt;</STRONG>  automatically  includes  the  header  file
 113        <STRONG>&lt;curses.h&gt;</STRONG>.
 114
 115
 116 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
 117        These routines emulate the System  V  forms  library.   They  were  not
 118        supported on Version 7 or BSD versions.
 119
 120        It  may be unwise to count on the set of attributes copied by <STRONG>dup_field</STRONG>
 121        being portable; the System V  forms  library  documents  are  not  very
 122        explicit about what gets copied and what does not.
 123
 124
 125 </PRE><H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
 126        Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S.
 127        Raymond.
 128
 129
 130
 131                                                             <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
 132 </PRE>
 133 <div class="nav">
 134 <ul>
 135 <li><a href="#h2-NAME">NAME</a></li>
 136 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
 137 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
 138 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
 139 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
 140 <li><a href="#h2-NOTES">NOTES</a></li>
 141 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
 142 <li><a href="#h2-AUTHORS">AUTHORS</a></li>
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