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/*
* 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();
}
}
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