Manual Pages for UNIX Operating System command usage for man form_init

Miscellaneous Library Functions                     form_hook(3X)



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

SYNOPSIS
     #include 
     int set_field_init(FORM *form, Form_Hook func);
     Form_Hook field_init(const FORM *form);
     int set_field_term(FORM *form, Form_Hook func);
     Form_Hook field_term(const FORM *form);
     int set_form_init(FORM *form, Form_Hook func);
     Form_Hook form_init(const FORM *form);
     int set_form_term(FORM *form, Form_Hook func);
     Form_Hook 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(3X), form(3X).




SunOS 5.10                Last change:                          1






Miscellaneous Library Functions                     form_hook(3X)



NOTES
     The header file  automatically includes  the  header
     file .

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.












































SunOS 5.10                Last change:                          2