diff --git a/form/fld_arg.c b/form/fld_arg.c
new file mode 100644
index 0000000..f79a157
--- /dev/null
+++ b/form/fld_arg.c
@@ -0,0 +1,98 @@
+/****************************************************************************
+ * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *   Author:  Juergen Pfeifer, 1995,1997                                    *
+ ****************************************************************************/
+
+#include "form.priv.h"
+
+MODULE_ID("$Id: fld_arg.c,v 1.11 2004/12/25 22:20:18 tom Exp $")
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  int set_fieldtype_arg(
+|                            FIELDTYPE *typ,
+|                            void * (* const make_arg)(va_list *),
+|                            void * (* const copy_arg)(const void *),
+|                            void   (* const free_arg)(void *) )
+|
+|   Description   :  Connects to the type additional arguments necessary
+|                    for a set_field_type call. The various function pointer
+|                    arguments are:
+|                       make_arg : allocates a structure for the field
+|                                  specific parameters.
+|                       copy_arg : duplicate the structure created by
+|                                  make_arg
+|                       free_arg : Release the memory allocated by make_arg
+|                                  or copy_arg
+|
+|                    At least make_arg must be non-NULL.
+|                    You may pass NULL for copy_arg and free_arg if your
+|                    make_arg function doesn't allocate memory and your
+|                    arg fits into the storage for a (void*).
+|
+|   Return Values :  E_OK           - success
+|                    E_BAD_ARGUMENT - invalid argument
++--------------------------------------------------------------------------*/
+NCURSES_EXPORT(int)
+set_fieldtype_arg(FIELDTYPE *typ,
+		  void *(*const make_arg)(va_list *),
+		  void *(*const copy_arg)(const void *),
+		  void (*const free_arg) (void *))
+{
+  T((T_CALLED("set_fieldtype_arg(%p,%p,%p,%p)"),
+     typ, make_arg, copy_arg, free_arg));
+
+  if (typ != 0 && make_arg != (void *)0)
+    {
+      typ->status |= _HAS_ARGS;
+      typ->makearg = make_arg;
+      typ->copyarg = copy_arg;
+      typ->freearg = free_arg;
+      RETURN(E_OK);
+    }
+  RETURN(E_BAD_ARGUMENT);
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  void *field_arg(const FIELD *field)
+|
+|   Description   :  Retrieve pointer to the fields argument structure.
+|
+|   Return Values :  Pointer to structure or NULL if none is defined.
++--------------------------------------------------------------------------*/
+NCURSES_EXPORT(void *)
+field_arg(const FIELD *field)
+{
+  T((T_CALLED("field_arg(%p)"), field));
+  returnVoidPtr(Normalize_Field(field)->arg);
+}
+
+/* fld_arg.c ends here */