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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qfunctions_win_p.h"
#include <QtCore/qdebug.h>
#include <combaseapi.h>
#include <objbase.h>
#if __has_include(<appmodel.h>)
# include <appmodel.h>
# define HAS_APPMODEL
#endif
QT_BEGIN_NAMESPACE
QComHelper::QComHelper(COINIT concurrencyModel)
{
// Avoid overhead of initializing and using obsolete technology
concurrencyModel = COINIT(concurrencyModel | COINIT_DISABLE_OLE1DDE);
m_initResult = CoInitializeEx(nullptr, concurrencyModel);
if (FAILED(m_initResult))
qErrnoWarning(m_initResult, "Failed to initialize COM library");
}
QComHelper::~QComHelper()
{
if (SUCCEEDED(m_initResult))
CoUninitialize();
}
/*!
Checks if the application has a \e{package identity}
Having a \e{package identity} is required to use many modern
Windows APIs.
https://docs.microsoft.com/en-us/windows/apps/desktop/modernize/modernize-packaged-apps
*/
bool qt_win_hasPackageIdentity()
{
#if defined(HAS_APPMODEL)
static const bool hasPackageIdentity = []() {
UINT32 length = 0;
switch (const auto result = GetCurrentPackageFullName(&length, nullptr)) {
case ERROR_INSUFFICIENT_BUFFER:
return true;
case APPMODEL_ERROR_NO_PACKAGE:
return false;
default:
qWarning("Failed to resolve package identity (error code %ld)", result);
return false;
}
}();
return hasPackageIdentity;
#else
return false;
#endif
}
QT_END_NAMESPACE
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