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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_WIN_CORE_WINRT_UTIL_H_
#define BASE_WIN_CORE_WINRT_UTIL_H_
#include <hstring.h>
#include <inspectable.h>
#include <roapi.h>
#include <windef.h>
#include "base/base_export.h"
#include "base/strings/string16.h"
#include "base/win/scoped_hstring.h"
namespace base {
namespace win {
// Provides access to Core WinRT functions which may not be available on
// Windows 7. Loads functions dynamically at runtime to prevent library
// dependencies.
BASE_EXPORT bool ResolveCoreWinRTDelayload();
// The following stubs are provided for when component build is enabled, in
// order to avoid the propagation of delay-loading CoreWinRT to other modules.
BASE_EXPORT HRESULT RoInitialize(RO_INIT_TYPE init_type);
BASE_EXPORT void RoUninitialize();
BASE_EXPORT HRESULT RoGetActivationFactory(HSTRING class_id,
const IID& iid,
void** out_factory);
BASE_EXPORT HRESULT RoActivateInstance(HSTRING class_id,
IInspectable** instance);
// Retrieves an activation factory for the type specified.
template <typename InterfaceType, wchar_t const* runtime_class_id>
HRESULT GetActivationFactory(InterfaceType** factory) {
ScopedHString class_id_hstring = ScopedHString::Create(runtime_class_id);
if (!class_id_hstring.is_valid())
return E_FAIL;
return base::win::RoGetActivationFactory(class_id_hstring.get(),
IID_PPV_ARGS(factory));
}
} // namespace win
} // namespace base
#endif // BASE_WIN_CORE_WINRT_UTIL_H_
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