| /* |
| * Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @key headful |
| * @bug 4980592 8171363 |
| * @summary switching user in XP causes an NPE in |
| * sun.awt.windows.WWindowPeer.displayChanged |
| * @requires (os.family == "windows") |
| * @modules java.desktop/java.awt.peer |
| * @modules java.desktop/sun.awt.windows:open |
| * @modules java.desktop/sun.awt |
| * @author son@sparc.spb.su: area=embedded |
| * @run main DisplayChangedTest |
| */ |
| |
| import java.awt.Frame; |
| import java.awt.Dialog; |
| import java.awt.TextArea; |
| import java.awt.peer.ComponentPeer; |
| import java.awt.peer.FramePeer; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Field; |
| |
| import sun.awt.AWTAccessor; |
| |
| public class DisplayChangedTest { |
| |
| /** |
| * Test fails if it throws any exception. |
| * |
| * @throws Exception |
| */ |
| private void init() throws Exception { |
| |
| if (!System.getProperty("os.name").startsWith("Windows")) { |
| System.out.println("This is Windows only test."); |
| return; |
| } |
| |
| Frame frame = new Frame("AWT Frame"); |
| frame.pack(); |
| |
| FramePeer frame_peer = AWTAccessor.getComponentAccessor() |
| .getPeer(frame); |
| Class comp_peer_class = Class.forName("sun.awt.windows.WComponentPeer"); |
| Field hwnd_field = comp_peer_class.getDeclaredField("hwnd"); |
| hwnd_field.setAccessible(true); |
| long hwnd = hwnd_field.getLong(frame_peer); |
| |
| Class clazz = Class.forName("sun.awt.windows.WEmbeddedFrame"); |
| Constructor constructor = clazz |
| .getConstructor(new Class[]{long.class}); |
| Frame embedded_frame = (Frame) constructor |
| .newInstance(new Object[]{new Long(hwnd)}); |
| frame.setVisible(true); |
| |
| ComponentPeer peer = AWTAccessor.getComponentAccessor().getPeer( |
| embedded_frame); |
| Class peerClass = peer.getClass(); |
| Method displayChangedM = peerClass.getMethod("displayChanged", |
| new Class[0]); |
| displayChangedM.invoke(peer, null); |
| embedded_frame.dispose(); |
| frame.dispose(); |
| |
| } |
| |
| public static void main(String args[]) throws Exception { |
| new DisplayChangedTest().init(); |
| } |
| |
| } |