set_field_init man page on MirBSD

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form_hook(3)	    UNIX Programmer's Manual	     form_hook(3)

NAME
     form_hook - set hooks for automatic invocation by applica-
     tions

SYNOPSIS
     #include <form.h>
     int set_field_init(FORM *form, void (*func)(FORM *));
     void (*)(FORM *) field_init(const FORM *form);
     int set_field_term(FORM *form, void (*func)(FORM *));
     void (*)(FORM *) field_term(const FORM *form);
     int set_form_init(FORM *form, void (*func)(FORM *));
     void (*)(FORM *) form_init(const FORM *form);
     int set_form_term(FORM *form, void (*func)(FORM *));
     void (*)(FORM *) form_term(const FORM *form);

DESCRIPTION
     These functions make it possible to set hook functions to be
     called at various points in the automatic processing of
     input event codes by form_driver.

     The function set_field_init sets a hook to be called at
     form-post time and each time the selected field changes
     (after the change).  field_init returns the current field
     init hook, if any (NULL if there is no such hook).

     The function set_field_term sets a hook to be called at
     form-unpost time and each time the selected field changes
     (before the change).  field_term returns the current field
     term hook, if any (NULL if there is no such hook).

     The function set_form_init sets a hook to be called at
     form-post time and just after a page change once it is
     posted.  form_init returns the current form init hook, if
     any (NULL if there is no such hook).

     The function set_form_term sets a hook to be called at
     form-unpost time and just before a page change once it is
     posted.  form_init returns the current form term hook, if
     any (NULL if there is no such hook).

RETURN VALUE
     Routines that return pointers return NULL on error.  Other
     routines return one of the following:

     E_OK The routine succeeded.

     E_SYSTEM_ERROR
	  System error occurred (see errno).

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

MirOS BSD #10-current	Printed 18.8.2011			1

form_hook(3)	    UNIX Programmer's Manual	     form_hook(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.

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

MirOS BSD #10-current	Printed 18.8.2011			2

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