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  42 <H1 class="no-header">form_field_new 3x 2023-10-07 ncurses 6.4 Library calls</H1>
  43 <PRE>
  44 <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>               Library calls              <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
  45
  46
  47
  48
  49 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
  50        <STRONG>new_field</STRONG>,  <STRONG>dup_field</STRONG>, <STRONG>link_field</STRONG>, <STRONG>free_field</STRONG> - create and destroy form
  51        fields
  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>FIELD</STRONG> <STRONG>*new_field(int</STRONG> <EM>height</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>width</EM><STRONG>,</STRONG>
  58                         <STRONG>int</STRONG> <EM>toprow</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>leftcol</EM><STRONG>,</STRONG>
  59                         <STRONG>int</STRONG> <EM>offscreen</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>nbuffers</EM><STRONG>);</STRONG>
  60        <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>
  61        <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>
  62        <STRONG>int</STRONG> <STRONG>free_field(FIELD</STRONG> <STRONG>*</STRONG><EM>field</EM><STRONG>);</STRONG>
  63
  64
  65 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
  66        The function <STRONG>new_field</STRONG> allocates a new field and  initializes  it  from
  67        the  parameters  given: height, width, row of upper-left corner, column
  68        of upper-left corner, number off-screen rows, and number of  additional
  69        working buffers.
  70
  71        The  function  <STRONG>dup_field</STRONG>  duplicates  a  field at a new location.  Most
  72        attributes (including current contents, size, validation  type,  buffer
  73        count,  growth  threshold,  justification,  foreground, background, pad
  74        character, options, and user pointer) are copied.  Field status and the
  75        field page bit are not copied.
  76
  77        The  function  <STRONG>link_field</STRONG> acts like <STRONG>dup_field</STRONG>, but the new field shares
  78        buffers with its parent.  Attribute data is separate.
  79
  80        The function <STRONG>free_field</STRONG> de-allocates storage associated with a field.
  81
  82
  83 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
  84        The functions <STRONG>new_field</STRONG>, <STRONG>dup_field</STRONG>, <STRONG>link_field</STRONG> return  <STRONG>NULL</STRONG>  on  error.
  85        They set <STRONG>errno</STRONG> according to their success:
  86
  87        <STRONG>E_OK</STRONG> The routine succeeded.
  88
  89        <STRONG>E_BAD_ARGUMENT</STRONG>
  90             Routine detected an incorrect or out-of-range argument.
  91
  92        <STRONG>E_SYSTEM_ERROR</STRONG>
  93             System error occurred, e.g., malloc failure.
  94
  95        The function <STRONG>free_field</STRONG> returns one of the following:
  96
  97        <STRONG>E_OK</STRONG> The routine succeeded.
  98
  99        <STRONG>E_BAD_ARGUMENT</STRONG>
 100             Routine detected an incorrect or out-of-range argument.
 101
 102        <STRONG>E_CONNECTED</STRONG>
 103             field is connected.
 104
 105
 106 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
 107        The  header  file  <STRONG>&lt;form.h&gt;</STRONG>  automatically  includes  the  header  file
 108        <STRONG>&lt;curses.h&gt;</STRONG>.
 109
 110
 111 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
 112        These routines emulate the System  V  forms  library.   They  were  not
 113        supported on Version 7 or BSD versions.
 114
 115        It  may be unwise to count on the set of attributes copied by <STRONG>dup_field</STRONG>
 116        being portable; the System V  forms  library  documents  are  not  very
 117        explicit about what gets copied and what does not.
 118
 119
 120 </PRE><H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
 121        Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S.
 122        Raymond.
 123
 124
 125 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
 126        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>
 127
 128
 129
 130 ncurses 6.4                       2023-10-07                <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
 131 </PRE>
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 134 <li><a href="#h2-NAME">NAME</a></li>
 135 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
 136 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
 137 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
 138 <li><a href="#h2-NOTES">NOTES</a></li>
 139 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
 140 <li><a href="#h2-AUTHORS">AUTHORS</a></li>
 141 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
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