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30 * @Id: form_field_new.3x,v 1.18 2010/12/04 18:40:45 tom Exp @
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42 <H1>form_field_new 3x</H1>
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>
51 <H2><a name="h2-NAME">NAME</a></H2><PRE>
52 <STRONG>form_field_new</STRONG> - create and destroy form fields
56 <H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
57 <STRONG>#include</STRONG> <STRONG><form.h></STRONG>
58 FIELD *new_field(int height, int width,
59 int toprow, int leftcol,
60 int offscreen, int nbuffers);
61 FIELD *dup_field(FIELD *field, int toprow, int leftcol);
62 FIELD *link_field(FIELD *field, int toprow, int leftcol);
63 int free_field(FIELD *field);
67 <H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
68 The function <STRONG>new_field</STRONG> allocates a new field and initial-
69 izes it from the parameters given: height, width, row of
70 upper-left corner, column of upper-left corner, number
71 off-screen rows, and number of additional working buffers.
73 The function <STRONG>dup_field</STRONG> duplicates a field at a new loca-
74 tion. Most attributes (including current contents, size,
75 validation type, buffer count, growth threshold, justifi-
76 cation, foreground, background, pad character, options,
77 and user pointer) are copied. Field status and the field
78 page bit are not copied.
80 The function <STRONG>link_field</STRONG> acts like <STRONG>dup_field</STRONG>, but the new
81 field shares buffers with its parent. Attribute data is
84 The function <STRONG>free_field</STRONG> de-allocates storage associated
89 <H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
90 The function, <STRONG>new_field</STRONG>, <STRONG>dup_field</STRONG>, <STRONG>link_field</STRONG> return <STRONG>NULL</STRONG>
91 on error. They set errno according to their success:
93 <STRONG>E_OK</STRONG> The routine succeeded.
95 <STRONG>E_BAD_ARGUMENT</STRONG>
96 Routine detected an incorrect or out-of-range argu-
99 <STRONG>E_SYSTEM_ERROR</STRONG>
100 System error occurred, e.g., malloc failure.
102 The function <STRONG>free_field</STRONG> returns one of the following:
104 <STRONG>E_OK</STRONG> The routine succeeded.
106 <STRONG>E_BAD_ARGUMENT</STRONG>
107 Routine detected an incorrect or out-of-range argu-
110 <STRONG>E_CONNECTED</STRONG>
115 <H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
116 <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>.
120 <H2><a name="h2-NOTES">NOTES</a></H2><PRE>
121 The header file <STRONG><form.h></STRONG> automatically includes the header
122 file <STRONG><curses.h></STRONG>.
126 <H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
127 These routines emulate the System V forms library. They
128 were not supported on Version 7 or BSD versions.
130 It may be unwise to count on the set of attributes copied
131 by <STRONG>dup_field</STRONG> being portable; the System V forms library
132 documents are not very explicit about what gets copied and
137 <H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
138 Juergen Pfeifer. Manual pages and adaptation for new
139 curses by Eric S. Raymond.
143 <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
147 <li><a href="#h2-NAME">NAME</a></li>
148 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
149 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
150 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
151 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
152 <li><a href="#h2-NOTES">NOTES</a></li>
153 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
154 <li><a href="#h2-AUTHORS">AUTHORS</a></li>