forked from metin-server/m2dev-client-src
76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
//*********************************************************
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//
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// Copyright (c) Microsoft. All rights reserved.
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// This code is licensed under the MIT License.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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// PARTICULAR PURPOSE AND NONINFRINGEMENT.
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//
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//*********************************************************
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//! @file
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//! Utilities for making managing COM server easier
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#ifndef __WIL_CPPWINRT_REGISTER_COM_SERVER_INCLUDED
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#define __WIL_CPPWINRT_REGISTER_COM_SERVER_INCLUDED
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#include <winrt/base.h>
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#include <wil/resource.h>
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#include <wil/cppwinrt.h>
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#include <vector>
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namespace wil::details
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{
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template <typename T>
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struct CppWinRTClassFactory : winrt::implements<CppWinRTClassFactory<T>, IClassFactory, winrt::no_module_lock>
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{
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HRESULT __stdcall CreateInstance(IUnknown* outer, GUID const& iid, void** result) noexcept final
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try
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{
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*result = nullptr;
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if (outer)
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{
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return CLASS_E_NOAGGREGATION;
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}
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return winrt::make_self<T>().as(iid, result);
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}
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CATCH_RETURN()
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HRESULT __stdcall LockServer(BOOL) noexcept final
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{
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return S_OK;
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}
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};
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template <typename T = void, typename... Rest>
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void register_com_server(std::vector<wil::unique_com_class_object_cookie>& registrations)
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{
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DWORD registration{};
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winrt::check_hresult(CoRegisterClassObject(
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winrt::guid_of<T>(), winrt::make<CppWinRTClassFactory<T>>().get(), CLSCTX_LOCAL_SERVER, REGCLS_MULTIPLEUSE, ®istration));
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// This emplace_back is no-throw as wil::register_com_server already reserves enough capacity
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registrations.emplace_back(registration);
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register_com_server<Rest...>(registrations);
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}
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template <>
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void register_com_server<void>(std::vector<unique_com_class_object_cookie>&)
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{
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}
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} // namespace wil::details
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namespace wil
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{
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template <typename T, typename... Rest>
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[[nodiscard]] std::vector<wil::unique_com_class_object_cookie> register_com_server()
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{
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std::vector<wil::unique_com_class_object_cookie> registrations;
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registrations.reserve(sizeof...(Rest) + 1);
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details::register_com_server<T, Rest...>(registrations);
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// C++17 doesn't provide guaranteed copy elision, but the copy should be elided nonetheless.
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return registrations;
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}
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} // namespace wil
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#endif |