# form_field_new 3x

    form_field_new(3x)                                          form_field_new(3x)

## NAME

           new_field,  dup_field, link_field, free_field - create and destroy form
           fields

## SYNOPSIS

           #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);

## DESCRIPTION

           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.

## RETURN VALUE

           The function, 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.

## SEE ALSO

           curses(3x), form(3x).

## NOTES

           The  header  file  <form.h>  automatically  includes  the  header  file
           <curses.h>.

## PORTABILITY

           These routines emulate the System V forms library.  They were not  sup-
           ported 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.

## AUTHORS

           Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S.
           Raymond.

                                                                form_field_new(3x)