VirtualBox

source: vbox/trunk/include/VBox/com/com.h@ 36254

Last change on this file since 36254 was 35638, checked in by vboxsync, 14 years ago

Main. QT/FE: fix long standing COM issue

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.9 KB
Line 
1/** @file
2 * MS COM / XPCOM Abstraction Layer:
3 * COM initialization / shutdown
4 */
5
6/*
7 * Copyright (C) 2006-2007 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27#ifndef ___VBox_com_com_h
28#define ___VBox_com_com_h
29
30#include "VBox/com/defs.h"
31
32namespace com
33{
34
35/**
36 * Initializes the COM runtime.
37 * Must be called on the main thread, before any COM activity in any thread, and by any thread
38 * willing to perform COM operations.
39 *
40 * @param fMain if call is performed on the GUI thread
41 * @return COM result code
42 */
43HRESULT Initialize(bool fGui = false);
44
45/**
46 * Shuts down the COM runtime.
47 * Must be called on the main thread before termination.
48 * No COM calls may be made in any thread after this method returns.
49 */
50HRESULT Shutdown();
51
52/**
53 * Resolves a given interface ID to a string containing the interface name.
54 * If, for some reason, the given IID cannot be resolved to a name, a NULL
55 * string is returned. A non-NULL string returned by this function must be
56 * freed using SysFreeString().
57 *
58 * @param aIID ID of the interface to get a name for
59 * @param aName Resolved interface name or @c NULL on error
60 */
61void GetInterfaceNameByIID(const GUID &aIID, BSTR *aName);
62
63/**
64 * Returns the VirtualBox user home directory.
65 *
66 * On failure, this function will return a path that caused a failure (or
67 * NULL if the failure is not path-related).
68 *
69 * On success, this function will try to create the returned directory if it
70 * doesn't exist yet. This may also fail with the corresponding status code.
71 *
72 * If @a aDirLen is smaller than RTPATH_MAX then there is a great chance that
73 * this method will return VERR_BUFFER_OVERFLOW.
74 *
75 * @param aDir Buffer to store the directory string in UTF-8 encoding.
76 * @param aDirLen Length of the supplied buffer including space for the
77 * terminating null character, in bytes.
78 * @return VBox status code.
79 */
80int GetVBoxUserHomeDirectory (char *aDir, size_t aDirLen);
81
82} /* namespace com */
83
84#endif
85
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