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31 * @Id: form_field_new.3x,v 1.18 2010/12/04 18:40:45 tom Exp @
35 <TITLE>form_field_new 3x</TITLE>
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40 <H1>form_field_new 3x</H1>
43 <!-- Manpage converted by man2html 3.0.1 -->
44 <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 <STRONG>form_field_new</STRONG> - create and destroy form fields
55 <H2>SYNOPSIS</H2><PRE>
56 <STRONG>#include</STRONG> <STRONG><form.h></STRONG>
57 FIELD *new_field(int height, int width,
58 int toprow, int leftcol,
59 int offscreen, int nbuffers);
60 FIELD *dup_field(FIELD *field, int toprow, int leftcol);
61 FIELD *link_field(FIELD *field, int toprow, int leftcol);
62 int free_field(FIELD *field);
66 <H2>DESCRIPTION</H2><PRE>
67 The function <STRONG>new_field</STRONG> allocates a new field and initial-
68 izes it from the parameters given: height, width, row of
69 upper-left corner, column of upper-left corner, number
70 off-screen rows, and number of additional working buffers.
72 The function <STRONG>dup_field</STRONG> duplicates a field at a new loca-
73 tion. Most attributes (including current contents, size,
74 validation type, buffer count, growth threshold, justifi-
75 cation, foreground, background, pad character, options,
76 and user pointer) are copied. Field status and the field
77 page bit are not copied.
79 The function <STRONG>link_field</STRONG> acts like <STRONG>dup_field</STRONG>, but the new
80 field shares buffers with its parent. Attribute data is
83 The function <STRONG>free_field</STRONG> de-allocates storage associated
88 <H2>RETURN VALUE</H2><PRE>
89 The function, <STRONG>new_field</STRONG>, <STRONG>dup_field</STRONG>, <STRONG>link_field</STRONG> return <STRONG>NULL</STRONG>
90 on error. They set errno according to their success:
92 <STRONG>E_OK</STRONG> The routine succeeded.
94 <STRONG>E_BAD_ARGUMENT</STRONG>
95 Routine detected an incorrect or out-of-range argu-
98 <STRONG>E_SYSTEM_ERROR</STRONG>
99 System error occurred, e.g., malloc failure.
101 The function <STRONG>free_field</STRONG> returns one of the following:
103 <STRONG>E_OK</STRONG> The routine succeeded.
105 <STRONG>E_BAD_ARGUMENT</STRONG>
106 Routine detected an incorrect or out-of-range argu-
109 <STRONG>E_CONNECTED</STRONG>
114 <H2>SEE ALSO</H2><PRE>
115 <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>.
120 The header file <STRONG><form.h></STRONG> automatically includes the header
121 file <STRONG><curses.h></STRONG>.
125 <H2>PORTABILITY</H2><PRE>
126 These routines emulate the System V forms library. They
127 were not supported on Version 7 or BSD versions.
129 It may be unwise to count on the set of attributes copied
130 by <STRONG>dup_field</STRONG> being portable; the System V forms library
131 documents are not very explicit about what gets copied and
136 <H2>AUTHORS</H2><PRE>
137 Juergen Pfeifer. Manual pages and adaptation for new
138 curses by Eric S. Raymond.
142 <STRONG><A HREF="form_field_new.3x.html">form_field_new(3x)</A></STRONG>
146 Man(1) output converted with
147 <a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>