1 files changed, 25 insertions, 3 deletions
diff --git a/libjava/classpath/gnu/java/awt/peer/gtk/GtkDialogPeer.java b/libjava/classpath/gnu/java/awt/peer/gtk/GtkDialogPeer.java
index c2cbc37dce9..f5ba3ad2c5e 100644
--- a/libjava/classpath/gnu/java/awt/peer/gtk/GtkDialogPeer.java
+++ b/libjava/classpath/gnu/java/awt/peer/gtk/GtkDialogPeer.java
@@ -44,6 +44,10 @@ import java.awt.Rectangle;
 import java.awt.event.PaintEvent;
 import java.awt.peer.DialogPeer;
 
+import javax.swing.JDialog;
+import javax.swing.JPopupMenu;
+import javax.swing.JToolTip;
+
 public class GtkDialogPeer extends GtkWindowPeer
   implements DialogPeer
 {
@@ -82,10 +86,28 @@ public class GtkDialogPeer extends GtkWindowPeer
 
   void create ()
   {
-    // Create a decorated dialog window.
-    create (GDK_WINDOW_TYPE_HINT_DIALOG, true);
-
     Dialog dialog = (Dialog) awtComponent;
+    int type = GDK_WINDOW_TYPE_HINT_DIALOG;
+
+    if (dialog instanceof JDialog)
+      {
+        Class heavyWeightClass;
+        try
+          {
+            heavyWeightClass = Class.forName("javax.swing.Popup$JWindowPopup");
+          }
+        catch (ClassNotFoundException e)
+          {
+            throw new AssertionError(e);
+          }
+        
+        if (dialog.getClass() == heavyWeightClass 
+            || ((JDialog) dialog).getContentPane() instanceof JToolTip)
+          type = GDK_WINDOW_TYPE_HINT_MENU;
+      }
+    
+    // Create a decorated dialog window.
+    create (type, !((Dialog) awtComponent).isUndecorated ());
 
     gtkWindowSetModal (dialog.isModal ());
     setTitle (dialog.getTitle ());