diff --git a/Ada95/samples/ncurses2-overlap_test.adb b/Ada95/samples/ncurses2-overlap_test.adb
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+------------------------------------------------------------------------------
+--                                                                          --
+--                       GNAT ncurses Binding Samples                       --
+--                                                                          --
+--                                 ncurses                                  --
+--                                                                          --
+--                                 B O D Y                                  --
+--                                                                          --
+------------------------------------------------------------------------------
+-- Copyright (c) 2000,2004 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: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
+--  Version Control
+--  $Revision: 1.4 $
+--  $Date: 2004/08/21 21:37:00 $
+--  Binding Version 01.00
+------------------------------------------------------------------------------
+with ncurses2.util; use ncurses2.util;
+with Terminal_Interface.Curses; use Terminal_Interface.Curses;
+
+--  test effects of overlapping windows
+
+procedure ncurses2.overlap_test is
+
+   procedure fillwin (win : Window; ch : Character);
+   procedure crosswin (win : Window; ch : Character);
+
+   procedure fillwin (win : Window; ch : Character) is
+      y1 : Line_Position;
+      x1 : Column_Position;
+   begin
+      Get_Size (win, y1, x1);
+      for y in 0 .. y1 - 1 loop
+         Move_Cursor (win, y, 0);
+         for x in 0 .. x1 - 1 loop
+            Add (win, Ch => ch);
+         end loop;
+      end loop;
+   exception
+      when Curses_Exception => null;
+         --  write to lower right corner
+   end fillwin;
+
+   procedure crosswin (win : Window; ch : Character) is
+      y1 : Line_Position;
+      x1 : Column_Position;
+   begin
+      Get_Size (win, y1, x1);
+      for y in 0 .. y1 - 1 loop
+         for x in 0 .. x1 - 1 loop
+            if ((x > (x1 - 1) / 3) and (x <= (2 * (x1 - 1)) / 3))
+                or (((y > (y1 - 1) / 3) and (y <= (2 * (y1 - 1)) / 3))) then
+               Move_Cursor (win, y, x);
+               Add (win, Ch => ch);
+            end if;
+         end loop;
+      end loop;
+   end crosswin;
+
+   --  In a 24x80 screen like some xterms are, the instructions will
+   --  be overwritten.
+   ch : Character;
+   win1 : Window := New_Window (9, 20, 3, 3);
+   win2 : Window := New_Window (9, 20, 9, 16);
+begin
+   Set_Raw_Mode (SwitchOn => True);
+   Refresh;
+   Move_Cursor (Line => 0, Column => 0);
+   Add (Str => "This test shows the behavior of wnoutrefresh() with " &
+        "respect to");
+   Add (Ch => newl);
+   Add (Str => "the shared region of two overlapping windows A and B. "&
+        "The cross");
+   Add (Ch => newl);
+   Add (Str => "pattern in each window does not overlap the other.");
+   Add (Ch => newl);
+
+   Move_Cursor (Line => 18, Column => 0);
+   Add (Str => "a = refresh A, then B, then doupdate. b = refresh B, " &
+        "then A, then doupdaute");
+   Add (Ch => newl);
+   Add (Str => "c = fill window A with letter A.      d = fill window B " &
+        "with letter B.");
+   Add (Ch => newl);
+   Add (Str => "e = cross pattern in window A.        f = cross pattern " &
+        "in window B.");
+   Add (Ch => newl);
+   Add (Str => "g = clear window A.                   h = clear window B.");
+   Add (Ch => newl);
+   Add (Str => "i = overwrite A onto B.               j = overwrite " &
+        "B onto A.");
+   Add (Ch => newl);
+   Add (Str => "^Q/ESC = terminate test.");
+
+   loop
+      ch := Code_To_Char (Getchar);
+      exit when ch = CTRL ('Q') or ch = CTRL ('['); --  QUIT or ESCAPE
+      case ch is
+         when 'a' => --  refresh window A first, then B
+            Refresh_Without_Update (win1);
+            Refresh_Without_Update (win2);
+            Update_Screen;
+         when 'b' => --  refresh window B first, then A
+            Refresh_Without_Update (win2);
+            Refresh_Without_Update (win1);
+            Update_Screen;
+         when 'c' => --  fill window A so it's visible
+            fillwin (win1, 'A');
+         when 'd' => --  fill window B so it's visible
+            fillwin (win2, 'B');
+         when 'e' => --  cross test pattern in window A
+            crosswin (win1, 'A');
+         when 'f' => --  cross test pattern in window B
+            crosswin (win2, 'B');
+         when 'g' => --  clear window A
+            Clear (win1);
+            Move_Cursor (win1, 0, 0);
+         when 'h' => --  clear window B
+            Clear (win2);
+            Move_Cursor (win2, 0, 0);
+         when 'i' => --  overwrite A onto B
+            Overwrite (win1, win2);
+         when 'j' => --  overwrite B onto A
+            Overwrite (win2, win1);
+         when others => null;
+      end case;
+   end loop;
+
+   Delete (win2);
+   Delete (win1);
+   Erase;
+   End_Windows;
+end ncurses2.overlap_test;