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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | PORTABILITY | AUTHORS | SEE ALSO | COLOPHON |
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form_field_new(3X) Library calls form_field_new(3X)
new_field, dup_field, link_field, free_field - create and destroy
form fields
#include <form.h>
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);
The function new_field allocates a new field and initializes 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 dup_field duplicates a field at a new location. Most
attributes (including current contents, size, validation type,
buffer count, growth threshold, justification, foreground,
background, pad character, options, and user pointer) are copied.
Field status and the field page bit are not copied.
The function link_field acts like dup_field, but the new field
shares buffers with its parent. Attribute data is separate.
The function free_field de-allocates storage associated with a
field.
The functions new_field, dup_field, link_field return NULL on
error. They set errno according to their success:
E_OK The routine succeeded.
E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
E_SYSTEM_ERROR
System error occurred, e.g., malloc failure.
The function free_field returns one of the following:
E_OK The routine succeeded.
E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
E_CONNECTED
field is connected.
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
dup_field being portable; the System V forms library documents are
not very explicit about what gets copied and what does not.
Juergen Pfeifer. Manual pages and adaptation for new curses by
Eric S. Raymond.
curses(3X), form(3X)
This page is part of the ncurses (new curses) project.
Information about the project can be found at
⟨https://invisible-island.net/ncurses/ncurses.html⟩. If you have a
bug report for this manual page, send it to bug-ncurses@gnu.org.
This page was obtained from the tarball ncurses-6.6.tar.gz fetched
from ⟨https://ftp.gnu.org/gnu/ncurses/⟩ on 2026-01-16. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for the
page, or you have corrections or improvements to the information
in this COLOPHON (which is not part of the original manual page),
send a mail to man-pages@man7.org
ncurses @NCURSES_MAJOR@.@NCU... 2024-12-28 form_field_new(3X)
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HTML rendering created 2026-01-16 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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