1 files changed, 88 insertions, 0 deletions
diff --git a/src/corelib/platform/windows/qfactorycacheregistration_p.h b/src/corelib/platform/windows/qfactorycacheregistration_p.h
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+++ b/src/corelib/platform/windows/qfactorycacheregistration_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:COMM$
+**
+** 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.
+**
+** $QT_END_LICENSE$
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+**
+******************************************************************************/
+
+#ifndef QFACTORYCACHEREGISTRATION_P_H
+#define QFACTORYCACHEREGISTRATION_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qglobal.h>
+
+#if !defined(QT_BOOTSTRAPPED) && defined(Q_OS_WIN) && !defined(Q_CC_CLANG) && QT_CONFIG(cpp_winrt)
+#    define QT_USE_FACTORY_CACHE_REGISTRATION
+#endif
+
+#ifdef QT_USE_FACTORY_CACHE_REGISTRATION
+
+#include <winrt/base.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace detail {
+
+class QWinRTFactoryCacheRegistration
+{
+public:
+    Q_CORE_EXPORT explicit QWinRTFactoryCacheRegistration(QFunctionPointer clearFunction);
+    Q_CORE_EXPORT ~QWinRTFactoryCacheRegistration();
+    Q_CORE_EXPORT static void clearAllCaches();
+
+    Q_DISABLE_COPY_MOVE(QWinRTFactoryCacheRegistration)
+private:
+    QWinRTFactoryCacheRegistration **m_prevNext = nullptr;
+    QWinRTFactoryCacheRegistration *m_next = nullptr;
+    QFunctionPointer m_clearFunction;
+};
+
+inline QWinRTFactoryCacheRegistration reg([]() noexcept { winrt::clear_factory_cache(); });
+}
+
+QT_END_NAMESPACE
+
+#endif
+#endif // QFACTORYCACHEREGISTRATION_P_H