/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_mscom_Utils_h
#define mozilla_mscom_Utils_h

#ifdef ACCESSIBILITY
#include <guiddef.h>
#endif

struct IUnknown;

namespace mozilla {
namespace mscom {

bool IsCurrentThreadMTA();
bool IsProxy(IUnknown* aUnknown);

#ifdef ACCESSIBILITY
bool IsVtableIndexFromParentInterface(REFIID aInterface,
                                      unsigned long aVtableIndex);
bool IsInterfaceEqualToOrInheritedFrom(REFIID aInterface, REFIID aFrom,
                                       unsigned long aVtableIndexHint);
#endif

} // namespace mscom
} // namespace mozilla

#endif // mozilla_mscom_Utils_h