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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) 2009-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox 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.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#ifndef VBOX_INCLUDED_VBoxCocoa_h
+#define VBOX_INCLUDED_VBoxCocoa_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+/** 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_INCLUDED_VBoxCocoa_h */
+