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form_field_new (3X)                                                                        form_field_new (3X)



NAME
       form_field_new - 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 con-tents, contents,
       tents, 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 supported on Version 7 or BSD  ver-sions. versions.
       sions.

       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)