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1.4.0_01 01Fixed | 1.4.1Fixed |
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Name: wm7046 Date: 02/05/2002 FULL PRODUCT VERSION : java version "1.4.0-rc" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-rc-b91) Java HotSpot(TM) Client VM (build 1.4.0-rc-b91, mixed mode) FULL OPERATING SYSTEM VERSION : Microsoft Windows 2000 [Version 5.00.2195] A DESCRIPTION OF THE PROBLEM : in Java 1.4, if any DnD is enabled and a modal dialog is shown, the application locks up completely if a drag is attempted to the app. There is a possibly-related bug, 4403757, but that does not mention locking up. STEPS TO FOLLOW TO REPRODUCE THE PROBLEM : 1. create an app that has any DnD-enabled component (example: JTree). 2. show a modal dialog (example: JOptionPane.showMessageDialog) 3. Drag from the windows desktop over the app. EXPECTED VERSUS ACTUAL BEHAVIOR : expect: no drag allowd actual: no drag allowed, but application completely locks up. Windows task manager needed to kill it. This bug can be reproduced always. ---------- BEGIN SOURCE ---------- import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.awt.dnd.*; public class TestDrag extends JFrame { public TestDrag() { super("Test of DnD bug"); this.setDefaultCloseOperation(EXIT_ON_CLOSE); JMenuBar menuBar = new JMenuBar(); JMenu menu = new JMenu("test"); menu.add(new JMenuItem(new AlertAction(this))); menuBar.add(menu); this.setJMenuBar(menuBar); JComponent content = new JTree(); content.setBackground(Color.white); content.setOpaque(true); content.setPreferredSize(new Dimension(400,300)); this.getContentPane().add(content); this.pack(); } public static void main(String[] args) { new TestDrag().show(); } public static class AlertAction extends AbstractAction { private JFrame frame; public AlertAction(JFrame frame) { super("Alert..."); this.frame = frame; } public void actionPerformed(ActionEvent e) { JOptionPane.showMessageDialog(frame, "Try dragging now.", "Howdy", JOptionPane.INFORMATION_MESSAGE); } } } ---------- END SOURCE ---------- CUSTOMER WORKAROUND : none found. (Review ID: 139032) ======================================================================
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