src/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java

@@ -59,10 +59,11 @@
     private static native void nativeSetNSWindowAlpha(long nsWindowPtr, float alpha);
     private static native void nativeRevalidateNSWindowShadow(long nsWindowPtr);
     private static native void nativeSetNSWindowMinimizedIcon(long nsWindowPtr, long nsImage);
     private static native void nativeSetNSWindowRepresentedFilename(long nsWindowPtr, String representedFilename);
     private static native void nativeSetNSWindowSecurityWarningPositioning(long nsWindowPtr, double x, double y, float biasX, float biasY);
+    private static native void nativeSynthesizeMouseEnteredExitedEvents(long nsWindowPtr);
 
     private static native int nativeGetScreenNSWindowIsOn_AppKitThread(long nsWindowPtr);
 
     // Loger to report issues happened during execution but that do not affect functionality
     private static final PlatformLogger logger = PlatformLogger.getLogger("sun.lwawt.macosx.CPlatformWindow");

@@ -580,10 +581,12 @@
                         break;
                 }
             }
         }
 
+        nativeSynthesizeMouseEnteredExitedEvents(nsWindowPtr);
+
         // 6. Configure stuff #2
         updateFocusabilityForAutoRequestFocus(true);
 
         // 7. Manage parent-child relationship when showing
         if (visible) {

@@ -781,10 +784,12 @@
                 break;
             default:
                 throw new RuntimeException("Unknown window state: " + windowState);
         }
 
+        nativeSynthesizeMouseEnteredExitedEvents(nsWindowPtr);
+
         // NOTE: the SWP.windowState field gets updated to the newWindowState
         //       value when the native notification comes to us
     }
 
     // ----------------------------------------------------------------------