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download PDF document: field_count.3.pdf

form_field(3X) form_field(3X)
NAME form_field - make and break connections between fields and forms
SYNOPSIS #include <form.h>
int set_form_fields(FORM *form, FIELD **fields); FIELD **form_fields(const FORM *form); int field_count(const FORM *form); int move_field(FIELD *field, int frow, int fcol);
DESCRIPTION The function set_form_fields changes the field pointer array of the given form. The array must be terminated by a NULL.
The function form_fields returns the field array of the given form.
The function field_count returns the count of fields in form.
The function move_field moves the given field (which must be disconnected) to a specified location on the screen.
RETURN VALUE The function form_fields returns a pointer (which may be NULL). It does not set errno.
The function field_count returns ERR if the form parameter is NULL.
The functions set_form_fields and move_field return one of the following codes on error:
E_OK The routine succeeded.
E_BAD_ARGUMENT Routine detected an incorrect or out-of-range argument.
E_CONNECTED The field is already connected to a form.
E_POSTED The form is already posted.
E_SYSTEM_ERROR System error occurred (see errno(3)).
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 SVr4 forms library documentation specifies the field_count error