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49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
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// Copyright 2017 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_SCOPED_WINRT_INITIALIZER_H_
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#define BASE_WIN_SCOPED_WINRT_INITIALIZER_H_
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#include <objbase.h>
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#include "base/base_export.h"
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#include "base/threading/thread_checker.h"
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#include "base/win/scoped_windows_thread_environment.h"
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namespace base {
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namespace win {
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// Initializes the Windows Runtime in the constructor and uninitalizes the
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// Windows Runtime in the destructor. As a side effect, COM is also initialized
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// as an MTA in the constructor and correspondingly uninitialized in the
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// destructor.
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//
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// Generally, you should only use this on Windows 8 or above. It is redundant
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// to use ScopedComInitializer in conjunction with ScopedWinrtInitializer.
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//
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// WARNING: This should only be used once per thread, ideally scoped to a
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// similar lifetime as the thread itself. You should not be using this in random
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// utility functions that make Windows Runtime calls -- instead ensure these
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// functions are running on a Windows Runtime supporting thread!
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class BASE_EXPORT ScopedWinrtInitializer
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: public ScopedWindowsThreadEnvironment {
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public:
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ScopedWinrtInitializer();
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~ScopedWinrtInitializer() override;
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// ScopedWindowsThreadEnvironment:
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bool Succeeded() const override;
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private:
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const HRESULT hr_;
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THREAD_CHECKER(thread_checker_);
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DISALLOW_COPY_AND_ASSIGN(ScopedWinrtInitializer);
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};
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} // namespace win
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} // namespace base
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#endif // BASE_WIN_SCOPED_WINRT_INITIALIZER_H_
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