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NetBSD 6.1.5 - man page for field_index (netbsd section 3)

FORM_PAGE(3)			   BSD Library Functions Manual 		     FORM_PAGE(3)

NAME
     current_field, field_index, form_page, form_max_page, set_current_field, set_form_page --
     form library

LIBRARY
     Curses Form Library (libform, -lform)

SYNOPSIS
     #include <form.h>

     FIELD *
     current_field(FORM *form);

     int
     field_index(FIELD *field);

     int
     form_page(FORM *form);

     int
     form_max_page(FORM *form);

     int
     set_current_field(FORM *form, FIELD *field);

     int
     set_form_page(FORM *form, int page);

DESCRIPTION
     The current_field() returns a pointer to the structure for the field that is currently
     active on the page.  If there is an error, current_field() will return NULL.  Calling
     field_index() will return the index of the given field in the form field array.  The current
     page the form is on can be determined by using form_page(), the current page of a form can
     be programmatically set by calling set_form_page().  The maximum page number for a form can
     be found by calling the function form_max_page() but note that this function is a NetBSD
     extension and must not be used in portable forms library programs.  The current field on the
     form may be set by calling set_current_field() which will set the current field to the one
     given.

RETURN VALUES
     Functions returning pointers will return NULL if an error is detected.  The functions that
     return an int will return one of the following error values:

     E_OK		The function was successful.
     E_BAD_ARGUMENT	The function was passed a bad argument.
     E_NOT_CONNECTED	The given field is not associated with a form.
     E_BAD_STATE	The function was called from within an init or term function.
     E_INVALID_FIELD	The field given is not part of the given form.

SEE ALSO
     curses(3), forms(3)

NOTES
     The header <form.h> automatically includes both <curses.h> and <eti.h>.

     The form_max_page is a NetBSD extension and should not be used in portable applications.

BSD					 January 1, 2001				      BSD


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