diff --git a/ncurses/base/lib_chgat.c b/ncurses/base/lib_chgat.c
new file mode 100644
index 0000000..89eefa7
--- /dev/null
+++ b/ncurses/base/lib_chgat.c
@@ -0,0 +1,68 @@
+/****************************************************************************
+ * Copyright (c) 1998-2005,2006 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: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
+ *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ *     and: Sven Verdoolaege                        2001                    *
+ *     and: Thomas E. Dickey                        2005                    *
+ ****************************************************************************/
+
+/*
+**	lib_chgat.c
+**
+**	The routine wchgat().
+**
+*/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: lib_chgat.c,v 1.7 2006/07/15 22:07:11 tom Exp $")
+
+NCURSES_EXPORT(int)
+wchgat(WINDOW *win, int n, attr_t attr, short color, const void *opts GCC_UNUSED)
+{
+    int i;
+
+    T((T_CALLED("wchgat(%p,%d,%s,%d)"), win, n, _traceattr(attr), color));
+
+    if (win) {
+	struct ldat *line = &(win->_line[win->_cury]);
+
+	toggle_attr_on(attr, COLOR_PAIR(color));
+
+	for (i = win->_curx; i <= win->_maxx && (n == -1 || (n-- > 0)); i++) {
+	    SetAttr(line->text[i], attr);
+	    SetPair(line->text[i], color);
+	    CHANGED_CELL(line, i);
+	}
+
+	returnCode(OK);
+    } else
+	returnCode(ERR);
+}