src/solaris/classes/sun/awt/X11/XWindowPeer.java

@@ -1163,19 +1163,29 @@
         return XWM.getWMID() == XWM.OPENLOOK_WM &&
             winAttr.nativeDecor == false;
     }
 
     public void dispose() {
+        if (isGrabbed()) {
+            if (grabLog.isLoggable(PlatformLogger.FINE)) {
+                grabLog.fine("Generating UngrabEvent on {0} because of the window disposal", this);
+            }
+            postEventToEventQueue(new sun.awt.UngrabEvent(getEventSource()));
+        }
+
         SunToolkit.awtLock();
+
         try {
             windows.remove(this);
         } finally {
             SunToolkit.awtUnlock();
         }
+
         if (warningWindow != null) {
             warningWindow.destroy();
         }
+
         removeRootPropertyEventDispatcher();
         mustControlStackPosition = false;
         super.dispose();
 
         /*

@@ -1189,10 +1199,11 @@
                 Window owner = getDecoratedOwner((Window)target);
                 ((XWindowPeer)AWTAccessor.getComponentAccessor().getPeer(owner)).requestWindowFocus();
             }
         }
     }
+
     boolean isResizable() {
         return winAttr.isResizable;
     }
 
     public void handleVisibilityEvent(XEvent xev) {