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

*** 61,70 ****
--- 61,71 ----
      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 nativeSetEnabled(long nsWindowPtr, boolean isEnabled);
      private static native void nativeSynthesizeMouseEnteredExitedEvents(long nsWindowPtr);
      private static native void nativeDispose(long nsWindowPtr);
+     public static native CPlatformWindow nativeGetTopmostPlatformWindowUnderMouse();
  
      private static native int nativeGetNSWindowDisplayID_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");