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