form_hook(3curses)                                form_hook(3curses)


       NAME
             form_hook: set_form_init, form_init, set_form_term, form_term,
             set_field_init, field_init, set_field_term, field_term -
             assign application-specific routines for invocation by forms

       SYNOPSIS
             cc [flag . . .] file -lform -lcurses [library . . .]
             #include <form.h>
             int set_form_init(FORM *form, void (*func)(FORM *));
             void (*)(FORM *) form_init(FORM *form);
             int set_form_term(FORM *form, void (*func)(FORM *));
             void (*)(FORM *) form_term(FORM *form);
             int set_field_init(FORM *form, void (*func)(FORM *));
             void (*)(FORM *) field_init(FORM *form);
             int set_field_term(FORM *form, void (*func)(FORM *));
             void (*)(FORM *) field_term(FORM *form);

       DESCRIPTION
             These routines allow the programmer to assign application
             specific routines to be executed automatically at
             initialization and termination points in the forms
             application.  The user need not specify any application-
             defined initialization or termination routines at all, but
             they may be helpful for displaying messages or page numbers
             and other chores.

             set_form_init assigns an application-defined initialization
             function to be called when the form is posted and just after a
             page change.  form_init returns a pointer to the
             initialization function, if any.

             set_form_term assigns an application-defined function to be
             called when the form is unposted and just before a page
             change.  form_term returns a pointer to the function, if any.

             set_field_init assigns an application-defined function to be
             called when the form is posted and just after the current
             field changes.  field_init returns a pointer to the function,
             if any.

             set_field_term assigns an application-defined function to be
             called when the form is unposted and just before the current
             field changes.  field_term returns a pointer to the function,
             if any.




                           Copyright 1994 Novell, Inc.               Page 1

      form_hook(3curses)                                form_hook(3curses)


      RETURN VALUE
            Routines that return pointers always return NULL on error.
            Routines that return an integer return one of the following:
            E_OK           - The function returned successfully.
            E_SYSTEM_ERROR - System error.

      NOTICES
            The header file form.h automatically includes the header files
            eti.h and curses.h.

      REFERENCES
            curses(3curses), forms(3curses)




































                          Copyright 1994 Novell, Inc.               Page 2