ncursesw-morphos/form/frm_opts.c

/****************************************************************************
 * Copyright (c) 1998-2012,2013 Free Software Foundation, Inc.              *
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 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
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/****************************************************************************
 *   Author:  Juergen Pfeifer, 1995,1997                                    *
 ****************************************************************************/

#include "form.priv.h"

MODULE_ID("$Id: frm_opts.c,v 1.17 2013/08/24 22:58:47 tom Exp $")

/*---------------------------------------------------------------------------
|   Facility      :  libnform  
|   Function      :  int set_form_opts(FORM *form, Form_Options opts)
|   
|   Description   :  Turns on the named options and turns off all the
|                    remaining options for that form.
|
|   Return Values :  E_OK              - success
|                    E_BAD_ARGUMENT    - invalid options
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
set_form_opts(FORM *form, Form_Options opts)
{
  T((T_CALLED("set_form_opts(%p,%d)"), (void *)form, opts));

  opts &= (Form_Options) ALL_FORM_OPTS;
  if ((unsigned)opts & ~ALL_FORM_OPTS)
    RETURN(E_BAD_ARGUMENT);
  else
    {
      Normalize_Form(form)->opts = opts;
      RETURN(E_OK);
    }
}

/*---------------------------------------------------------------------------
|   Facility      :  libnform  
|   Function      :  Form_Options form_opts(const FORM *)
|   
|   Description   :  Retrieves the current form options.
|
|   Return Values :  The option flags.
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(Form_Options)
form_opts(const FORM *form)
{
  T((T_CALLED("form_opts(%p)"), (const void *)form));
  returnCode((Form_Options) ((unsigned)Normalize_Form(form)->opts & ALL_FORM_OPTS));
}

/*---------------------------------------------------------------------------
|   Facility      :  libnform  
|   Function      :  int form_opts_on(FORM *form, Form_Options opts)
|   
|   Description   :  Turns on the named options; no other options are 
|                    changed.
|
|   Return Values :  E_OK            - success 
|                    E_BAD_ARGUMENT  - invalid options
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
form_opts_on(FORM *form, Form_Options opts)
{
  T((T_CALLED("form_opts_on(%p,%d)"), (void *)form, opts));

  opts &= (Form_Options) ALL_FORM_OPTS;
  if ((unsigned)opts & ~ALL_FORM_OPTS)
    RETURN(E_BAD_ARGUMENT);
  else
    {
      Normalize_Form(form)->opts |= opts;
      RETURN(E_OK);
    }
}

/*---------------------------------------------------------------------------
|   Facility      :  libnform  
|   Function      :  int form_opts_off(FORM *form, Form_Options opts)
|   
|   Description   :  Turns off the named options; no other options are 
|                    changed.
|
|   Return Values :  E_OK            - success 
|                    E_BAD_ARGUMENT  - invalid options
+--------------------------------------------------------------------------*/
NCURSES_EXPORT(int)
form_opts_off(FORM *form, Form_Options opts)
{
  T((T_CALLED("form_opts_off(%p,%d)"), (void *)form, opts));

  opts &= (Form_Options) ALL_FORM_OPTS;
  if ((unsigned)opts & ~ALL_FORM_OPTS)
    RETURN(E_BAD_ARGUMENT);
  else
    {
      Normalize_Form(form)->opts &= ~opts;
      RETURN(E_OK);
    }
}

/* frm_opts.c ends here */