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  1. JDK
  2. JDK-6445278

JDialog.setIconImage(s)() doesn't properly set the alt-tab icon on WinXP


    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Won't Fix
    • Affects Version/s: 6
    • Fix Version/s: None
    • Component/s: client-libs
    • Labels:


      Dialog and JDialog behave differently with respect to setting the icon used in the alt-tab listing on Windows XP. This may also be true of other icon usages and/or other platforms. For instance on WinXP, only the AWT Dialog appears in the task bar.

      The included test demonstrates the problem. A Dialog and JDialog are setup identically. The icons are both set correctly in the title bars, however when you press alt-tab to switch between applications, you can see that the icon for the AWT Dialog is also the custom icon, but the JDialog's icon is still the default.

      I believe this is limited to the case of dialogs with null owners - otherwise, the owning frames's icon is the only one in the alt-tab list.

      This is a bug in new Mustang functionality - before Window.setIconImage() was added, there wasn't a way to set an icon directly on a (J)Dialog.

      // Test showing that setIconImage() doesn't set the alt-tab icon for JDialog,
      // yet does for Dialog
      import java.awt.*;
      import javax.swing.*;
      import javax.imageio.*;
      import java.io.*;

      public class JDialogSetIconBug {
          public static void main(String[] args) {
              try {
                  Dialog dialog = new Dialog((Frame)null, "AWT Dialog");
                  JDialog jdialog = new JDialog((Frame)null, "JDialog");
                  Image icon = ImageIO.read(new File("64x64.gif"));

                  dialog.setBounds(10, 200, 100, 100);

                  jdialog.setBounds(200, 200, 100, 100);

              catch (Exception e) {


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              • Assignee:
                mcherkas Mikhail Cherkasov (Inactive)
                bchristi Brent Christian
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