form_field_userptr 3x

form_field_userptr(3x)                           form_field_userptr(3x)

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(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 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.



                                                 form_field_userptr(3x)