form_field_info(3x) — Linux manual page


form_field_info(3X)                                      form_field_info(3X)

NAME         top

       dynamic_field_info, field_info - retrieve field characteristics

SYNOPSIS         top

       #include <form.h>
       int field_info(const FIELD *field, int *rows, int *cols,
                     int *frow, int *fcol, int *nrow, int *nbuf);
       int dynamic_field_info(const FIELD *field, int *rows, int *cols, int

DESCRIPTION         top

       The function field_info returns the sizes and other attributes passed
       in to the field at its creation time.  The attributes are: height,
       width, row of upper-left corner, column of upper-left corner, number
       off-screen rows, and number of working buffers.

       The function dynamic_field_info returns the actual size of the field,
       and its maximum possible size.  If the field has no size limit, the
       location addressed by the third argument will be set to 0.  A field
       can be made dynamic by turning off the O_STATIC option with

RETURN VALUE         top

       These routines return one of the following:

       E_OK The routine succeeded.

            System error occurred (see errno(3)).

            Routine detected an incorrect or out-of-range argument.

SEE ALSO         top

       curses(3X) and related pages whose names begin “form_” for detailed
       descriptions of the entry points.

NOTES         top

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

PORTABILITY         top

       These routines emulate the System V forms library.  They were not
       supported on Version 7 or BSD versions.

       A null (zero pointer) is accepted for any of the return values, to
       ignore that value.  Not all implementations allow this, e.g., Solaris
       2.7 does not.

AUTHORS         top

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

COLOPHON         top

       This page is part of the ncurses (new curses) project.  Information
       about the project can be found at 
       ⟨⟩.  If you have a
       bug report for this manual page, send it to  This page was obtained from the
       project's upstream Git mirror of the CVS repository
       ⟨git://⟩ on 2020-09-18.  (At that
       time, the date of the most recent commit that was found in the repos‐
       itory was 2020-08-17.)  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