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* @Id: form_field_new.3x,v 1.11 2002/02/16 22:39:52 tom Exp @
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<H1>form_field_new 3x</H1>
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<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
</PRE>
<H2>NAME</H2><PRE>
<STRONG>form_field_new</STRONG> - create and destroy form fields
</PRE>
<H2>SYNOPSIS</H2><PRE>
<STRONG>#include</STRONG> <STRONG><form.h></STRONG>
FIELD *new_field(int height, int width,
int toprow, int leftcol,
int offscreen, int nbuffers);
FIELD *dup_field(FIELD *field, int toprow, int leftcol);
FIELD *link_field(FIELD *field, int toprow, int leftcol);
int free_field(FIELD *field);
</PRE>
<H2>DESCRIPTION</H2><PRE>
The function <STRONG>new_field</STRONG> allocates a new field and initial-
izes it from the parameters given: height, width, row of
upper-left corner, column of upper-left corner, number
off-screen rows, and number of additional working buffers.
The function <STRONG>dup_field</STRONG> duplicates a field at a new loca-
tion. Most attributes (including current contents, size,
validation type, buffer count, growth threshold, justifi-
cation, foreground, background, pad character, options,
and user pointer) are copied. Field status and the field
page bit are not copied.
The function <STRONG>link_field</STRONG> acts like <STRONG>dup_field</STRONG>, but the new
field shares buffers with its parent. Attribute data is
separate.
The function <STRONG>free_field</STRONG> de-allocates storage associated
with a field.
</PRE>
<H2>RETURN VALUE</H2><PRE>
The function, <STRONG>new_field</STRONG>, <STRONG>dup_field</STRONG>, <STRONG>link_field</STRONG> return <STRONG>NULL</STRONG>
on error.
The function <STRONG>free_field</STRONG> returns one of the following:
<STRONG>E_OK</STRONG> The routine succeeded.
<STRONG>E_SYSTEM_ERROR</STRONG>
System error occurred (see <STRONG>errno</STRONG>).
<STRONG>E_BAD_ARGUMENT</STRONG>
Routine detected an incorrect or out-of-range argu-
ment.
</PRE>
<H2>SEE ALSO</H2><PRE>
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>.
</PRE>
<H2>NOTES</H2><PRE>
The header file <STRONG><form.h></STRONG> automatically includes the header
file <STRONG><curses.h></STRONG>.
</PRE>
<H2>PORTABILITY</H2><PRE>
These routines emulate the System V forms library. They
were not supported on Version 7 or BSD versions.
It may be unwise to count on the set of attributes copied
by <STRONG><A HREF="dup_field.3x.html">dup_field(3x)</A></STRONG> being portable; the System V forms
library documents are not very explicit on what gets
copied and was not.
</PRE>
<H2>AUTHORS</H2><PRE>
Juergen Pfeifer. Manual pages and adaptation for new
curses by Eric S. Raymond.
</PRE>
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