diff --git a/ncurses/base/lib_slkset.c b/ncurses/base/lib_slkset.c
new file mode 100644
index 0000000..e19f88e
--- /dev/null
+++ b/ncurses/base/lib_slkset.c
@@ -0,0 +1,149 @@
+/****************************************************************************
+ * Copyright (c) 1998-2005,2007 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                                                 *
+ *     and: Thomas E. Dickey                                                *
+ ****************************************************************************/
+
+/*
+ *	lib_slkset.c
+ *      Set soft label text.
+ */
+#include <curses.priv.h>
+#include <ctype.h>
+
+#if USE_WIDEC_SUPPORT
+#if HAVE_WCTYPE_H
+#include <wctype.h>
+#endif
+#endif
+
+MODULE_ID("$Id: lib_slkset.c,v 1.17 2007/10/13 20:08:46 tom Exp $")
+
+NCURSES_EXPORT(int)
+slk_set(int i, const char *astr, int format)
+{
+    SLK *slk;
+    int offset;
+    int numchrs;
+    int numcols;
+    int limit;
+    const char *str = astr;
+    const char *p;
+
+    T((T_CALLED("slk_set(%d, \"%s\", %d)"), i, str, format));
+
+    if (SP == 0
+	|| (slk = SP->_slk) == 0
+	|| i < 1
+	|| i > slk->labcnt
+	|| format < 0
+	|| format > 2)
+	returnCode(ERR);
+    if (str == NULL)
+	str = "";
+    --i;			/* Adjust numbering of labels */
+
+    limit = MAX_SKEY_LEN(SP->slk_format);
+    while (isspace(UChar(*str)))
+	str++;			/* skip over leading spaces  */
+    p = str;
+
+#if USE_WIDEC_SUPPORT
+    numcols = 0;
+    while (*p != 0) {
+	mbstate_t state;
+	wchar_t wc;
+	size_t need;
+
+	init_mb(state);
+	need = mbrtowc(0, p, strlen(p), &state);
+	if (need == (size_t) -1)
+	    break;
+	mbrtowc(&wc, p, need, &state);
+	if (!iswprint((wint_t) wc))
+	    break;
+	if (wcwidth(wc) + numcols > limit)
+	    break;
+	numcols += wcwidth(wc);
+	p += need;
+    }
+    numchrs = (p - str);
+#else
+    while (isprint(UChar(*p)))
+	p++;			/* The first non-print stops */
+
+    numcols = (p - str);
+    if (numcols > limit)
+	numcols = limit;
+    numchrs = numcols;
+#endif
+
+    FreeIfNeeded(slk->ent[i].ent_text);
+    if ((slk->ent[i].ent_text = strdup(str)) == 0)
+	returnCode(ERR);
+    slk->ent[i].ent_text[numchrs] = '\0';
+
+    if ((slk->ent[i].form_text = (char *) _nc_doalloc(slk->ent[i].form_text,
+						      (unsigned) (limit +
+								  numchrs + 1))
+	) == 0)
+	returnCode(ERR);
+
+    switch (format) {
+    default:
+    case 0:			/* left-justified */
+	offset = 0;
+	break;
+    case 1:			/* centered */
+	offset = (limit - numcols) / 2;
+	break;
+    case 2:			/* right-justified */
+	offset = limit - numcols;
+	break;
+    }
+    if (offset <= 0)
+	offset = 0;
+    else
+	memset(slk->ent[i].form_text, ' ', (unsigned) offset);
+
+    memcpy(slk->ent[i].form_text + offset,
+	   slk->ent[i].ent_text,
+	   (unsigned) numchrs);
+
+    if (offset < limit) {
+	memset(slk->ent[i].form_text + offset + numchrs,
+	       ' ',
+	       (unsigned) (limit - (offset + numcols)));
+    }
+
+    slk->ent[i].form_text[numchrs - numcols + limit] = 0;
+    slk->ent[i].dirty = TRUE;
+    returnCode(OK);
+}