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39 lines
930 B
C++
39 lines
930 B
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_WIN_IUNKNOWN_IMPL_H_
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#define BASE_WIN_IUNKNOWN_IMPL_H_
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#include <unknwn.h>
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#include "base/atomic_ref_count.h"
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#include "base/base_export.h"
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#include "base/compiler_specific.h"
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namespace base {
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namespace win {
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// IUnknown implementation for other classes to derive from.
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class BASE_EXPORT IUnknownImpl : public IUnknown {
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public:
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IUnknownImpl();
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ULONG STDMETHODCALLTYPE AddRef() override;
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ULONG STDMETHODCALLTYPE Release() override;
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// Subclasses should extend this to return any interfaces they provide.
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STDMETHODIMP QueryInterface(REFIID riid, void** ppv) override;
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protected:
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virtual ~IUnknownImpl();
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private:
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AtomicRefCount ref_count_;
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};
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} // namespace win
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} // namespace base
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#endif // BASE_WIN_IUNKNOWN_IMPL_H_
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