form_field_userptr(3)                       form_field_userptr(3)


NAME
       form_field_userptr  -  associate  application  data with a
       form field



SYNOPSIS
       #include <form.h>
       int set_field_userptr(FIELD *field, void*userptr);
       void *field_userptr(const FIELD *field);

DESCRIPTION
       Every form field has a field that  can  be  used  to  hold
       application-specific  data  (that is, the form-driver code
       leaves it alone).  These functions get and set that field.

RETURN VALUE
       The  function  field_userptr  returns  NULL  on error. The
       function set_field_userptr returns one of the following:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
            System error occurred (see errno).

SEE ALSO
       curses(3), form(3).

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 versions.

       The user pointer should be a void pointer.  We leave it as
       a char pointer for SVr4 compatibility.

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

















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