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92 lines
4.6 KiB
92 lines
4.6 KiB
16 years ago
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/****************************************************************************
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* Copyright (c) 1998 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997 *
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****************************************************************************/
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#include "form.priv.h"
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MODULE_ID("$Id: fld_arg.c,v 1.1 2001-11-05 16:52:59 berk Exp $")
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/*---------------------------------------------------------------------------
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| Facility : libnform
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| Function : int set_fieldtype_arg(
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| FIELDTYPE *typ,
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| void * (* const make_arg)(va_list *),
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| void * (* const copy_arg)(const void *),
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| void (* const free_arg)(void *) )
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| Description : Connects to the type additional arguments necessary
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| for a set_field_type call. The various function pointer
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| arguments are:
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| make_arg : allocates a structure for the field
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| specific parameters.
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| copy_arg : duplicate the structure created by
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| make_arg
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| free_arg : Release the memory allocated by make_arg
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| or copy_arg
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| At least make_arg must be non-NULL.
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| You may pass NULL for copy_arg and free_arg if your
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| make_arg function doesn't allocate memory and your
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| arg fits into the storage for a (void*).
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| Return Values : E_OK - success
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| E_BAD_ARGUMENT - invalid argument
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+--------------------------------------------------------------------------*/
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int set_fieldtype_arg(FIELDTYPE * typ,
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void * (* const make_arg)(va_list *),
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void * (* const copy_arg)(const void *),
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void (* const free_arg)(void *))
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{
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if ( !typ || !make_arg )
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RETURN(E_BAD_ARGUMENT);
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typ->status |= _HAS_ARGS;
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typ->makearg = make_arg;
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typ->copyarg = copy_arg;
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typ->freearg = free_arg;
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RETURN(E_OK);
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}
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/*---------------------------------------------------------------------------
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| Facility : libnform
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| Function : void *field_arg(const FIELD *field)
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| Description : Retrieve pointer to the fields argument structure.
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| Return Values : Pointer to structure or NULL if none is defined.
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+--------------------------------------------------------------------------*/
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void *field_arg(const FIELD * field)
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{
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return Normalize_Field(field)->arg;
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}
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/* fld_arg.c ends here */
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