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/** @file
* MS COM / XPCOM Abstraction Layer - COM initialization / shutdown.
*/
/*
* Copyright (C) 2005-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef VBOX_INCLUDED_com_com_h
#define VBOX_INCLUDED_com_com_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include "VBox/com/defs.h"
#include "VBox/com/utils.h"
/** @defgroup grp_com MS COM / XPCOM Abstraction Layer
* @{
*/
namespace com
{
/** @name VBOX_COM_INIT_F_XXX - flags for com::Initialize().
* @{ */
/** Windows: Caller is the GUI and needs a STA rather than MTA apartment. */
#define VBOX_COM_INIT_F_GUI RT_BIT_32(0)
/** Windows: Auto registration updating, if privileged enough. */
#define VBOX_COM_INIT_F_AUTO_REG_UPDATE RT_BIT_32(1)
/** Windows: Opt-out of COM patching (client code should do this). */
#define VBOX_COM_INIT_F_NO_COM_PATCHING RT_BIT_32(2)
/** The default flags. */
#define VBOX_COM_INIT_F_DEFAULT (VBOX_COM_INIT_F_AUTO_REG_UPDATE)
/** @} */
/**
* Initializes the COM runtime.
*
* Must be called on the main thread, before any COM activity in any thread, and by any thread
* willing to perform COM operations.
*
* @return COM result code
*/
HRESULT Initialize(uint32_t fInitFlags = VBOX_COM_INIT_F_DEFAULT);
/**
* Shuts down the COM runtime.
*
* Must be called on the main thread before termination.
* No COM calls may be made in any thread after this method returns.
*/
HRESULT Shutdown();
/**
* Resolves a given interface ID to a string containing the interface name.
*
* If, for some reason, the given IID cannot be resolved to a name, a NULL
* string is returned. A non-NULL string returned by this function must be
* freed using SysFreeString().
*
* @param aIID ID of the interface to get a name for
* @param aName Resolved interface name or @c NULL on error
*/
void GetInterfaceNameByIID(const GUID &aIID, BSTR *aName);
#ifdef RT_OS_WINDOWS
void PatchComBugs(void);
#endif
} /* namespace com */
/** @} */
#endif /* !VBOX_INCLUDED_com_com_h */
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