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diff --git a/include/VBox/VBoxCocoa.h b/include/VBox/VBoxCocoa.h
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+/** @file
+ * VBoxCocoa Helper
+ */
+
+/*
+ * Copyright (C) 2009-2011 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+#ifndef ___VBox_VBoxCocoa_h
+#define ___VBox_VBoxCocoa_h
+
+/** Macro which add a typedef of the given Cocoa class in an appropriate form
+ * for the current context. This means void* in the C/CPP context and
+ * NSWhatever* in the ObjC/ObjCPP context. Use
+ * NativeNSWhateverRef/ConstNativeNSWhateverRef when you reference the Cocoa
+ * type somewhere. The use of this prevents extensive casting of void* to the
+ * right type in the Cocoa context. */
+#ifdef __OBJC__
+# define ADD_COCOA_NATIVE_REF(CocoaClass) \
+    @class CocoaClass; \
+    typedef CocoaClass *Native##CocoaClass##Ref; \
+    typedef const CocoaClass *ConstNative##CocoaClass##Ref
+#else  /* !__OBJC__ */
+# define ADD_COCOA_NATIVE_REF(CocoaClass) \
+    typedef void *Native##CocoaClass##Ref; \
+    typedef const void *ConstNative##CocoaClass##Ref
+#endif /* !__OBJC__ */
+
+
+/*
+ * Objective-C++ Helpers.
+ */
+#if defined(__OBJC__) && defined (__cplusplus)
+
+/* Global includes */
+# import <Foundation/NSAutoreleasePool.h>
+
+/** Helper class for automatic creation & destroying of a cocoa auto release
+ *  pool. */
+class CocoaAutoreleasePool
+{
+public:
+    inline CocoaAutoreleasePool()
+    {
+         mPool = [[NSAutoreleasePool alloc] init];
+    }
+    inline ~CocoaAutoreleasePool()
+    {
+        [mPool release];
+    }
+
+private:
+    NSAutoreleasePool *mPool;
+};
+
+#endif /* __OBJC__ && __cplusplus */
+
+#endif /* !___VBox_VBoxCocoa_h */
+