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Diffstat (limited to 'src/plugins/platforms/windows/qwindowscombase.h')
-rw-r--r-- | src/plugins/platforms/windows/qwindowscombase.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/src/plugins/platforms/windows/qwindowscombase.h b/src/plugins/platforms/windows/qwindowscombase.h deleted file mode 100644 index 45cba9c68b..0000000000 --- a/src/plugins/platforms/windows/qwindowscombase.h +++ /dev/null @@ -1,112 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2017 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the plugins of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QWINDOWSCOMBASE_H -#define QWINDOWSCOMBASE_H - -#include <QtCore/qglobal.h> - -#include <unknwn.h> - -QT_BEGIN_NAMESPACE - -// The __uuidof operator of MinGW does not work for all interfaces (for example, -// IAccessible2). Specializations of this function can be provides to work -// around this. -template <class DesiredInterface> -static IID qUuidOf() { return __uuidof(DesiredInterface); } - -// Helper for implementing IUnknown::QueryInterface. -template <class DesiredInterface, class Derived> -bool qWindowsComQueryInterface(Derived *d, REFIID id, LPVOID *iface) -{ - if (id == qUuidOf<DesiredInterface>()) { - *iface = static_cast<DesiredInterface *>(d); - d->AddRef(); - return true; - } - return false; -} - -// Helper for implementing IUnknown::QueryInterface for IUnknown -// in the case of multiple inheritance via the first inherited class. -template <class FirstInheritedInterface, class Derived> -bool qWindowsComQueryUnknownInterfaceMulti(Derived *d, REFIID id, LPVOID *iface) -{ - if (id == __uuidof(IUnknown)) { - *iface = static_cast<FirstInheritedInterface *>(d); - d->AddRef(); - return true; - } - return false; -} - -// Helper base class to provide IUnknown methods for COM classes (single inheritance) -template <class ComInterface> class QWindowsComBase : public ComInterface -{ - Q_DISABLE_COPY_MOVE(QWindowsComBase) -public: - explicit QWindowsComBase(ULONG initialRefCount = 1) : m_ref(initialRefCount) {} - virtual ~QWindowsComBase() = default; - - HRESULT STDMETHODCALLTYPE QueryInterface(REFIID id, LPVOID *iface) - { - *iface = nullptr; - return qWindowsComQueryInterface<IUnknown>(this, id, iface) || qWindowsComQueryInterface<ComInterface>(this, id, iface) - ? S_OK : E_NOINTERFACE; - } - - ULONG STDMETHODCALLTYPE AddRef() { return ++m_ref; } - - ULONG STDMETHODCALLTYPE Release() - { - if (!--m_ref) { - delete this; - return 0; - } - return m_ref; - } - -private: - ULONG m_ref; -}; - -QT_END_NAMESPACE - -#endif // QWINDOWSCOMBASE_H |