1bc7e9e77b
Unifies our approach to calling CoInitializeEx and CoUninitialize, removing a lot of boilerplate in the process, and also fixes a few bugs where we would incorrectly balance our calls to CoInitializeEx and CoUninitialize. The optimistic approach of qfilesystemengine_win.cpp of calling CoCreateInstance without initializing the COM library explicitly has been removed, as calling CoInitializeEx should be a noop in the situation where it's already been loaded. Change-Id: I9e2ec101678c2ebb9946504b5e8034e58f1bb56a Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
29 lines
711 B
C++
29 lines
711 B
C++
// Copyright (C) 2022 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
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#include "qfunctions_win_p.h"
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#include <combaseapi.h>
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#include <objbase.h>
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QT_BEGIN_NAMESPACE
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QComHelper::QComHelper(COINIT concurrencyModel)
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{
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// Avoid overhead of initializing and using obsolete technology
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concurrencyModel = COINIT(concurrencyModel | COINIT_DISABLE_OLE1DDE);
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m_initResult = CoInitializeEx(nullptr, concurrencyModel);
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if (FAILED(m_initResult))
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qErrnoWarning(m_initResult, "Failed to initialize COM library");
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}
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QComHelper::~QComHelper()
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{
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if (SUCCEEDED(m_initResult))
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CoUninitialize();
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}
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QT_END_NAMESPACE
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