| 1 | /** @file
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| 2 | * MS COM / XPCOM Abstraction Layer:
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| 3 | * COM initialization / shutdown
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 innotek GmbH
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License as published by the Free Software Foundation,
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| 13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 14 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #ifndef ___VBox_com_com_h
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| 19 | #define ___VBox_com_com_h
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| 20 |
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| 21 | #include "VBox/com/defs.h"
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| 22 |
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| 23 | namespace com
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| 24 | {
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| 25 |
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| 26 | /**
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| 27 | * Initializes the COM runtime.
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| 28 | * Must be called on every thread that uses COM, before any COM activity.
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| 29 | *
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| 30 | * @return COM result code
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| 31 | */
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| 32 | HRESULT Initialize();
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| 33 |
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| 34 | /**
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| 35 | * Shuts down the COM runtime.
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| 36 | * Must be called on every thread before termination.
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| 37 | * No COM calls may be made after this method returns.
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| 38 | */
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| 39 | HRESULT Shutdown();
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| 40 |
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| 41 | /**
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| 42 | * Resolves a given interface ID to a string containing the interface name.
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| 43 | * If, for some reason, the given IID cannot be resolved to a name, a NULL
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| 44 | * string is returned. A non-NULL string returned by this funciton must be
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| 45 | * freed using SysFreeString().
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| 46 | *
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| 47 | * @param aIID ID of the interface to get a name for
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| 48 | * @param aName Resolved interface name or @c NULL on error
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| 49 | */
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| 50 | void GetInterfaceNameByIID (const GUID &aIID, BSTR *aName);
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| 51 |
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| 52 | /**
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| 53 | * Returns the VirtualBox user home directory.
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| 54 | *
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| 55 | * On failure, this function will return a path that caused a failure (or
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| 56 | * NULL if the faiulre is not path-related).
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| 57 | *
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| 58 | * On success, this function will try to create the returned directory if it
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| 59 | * doesn't exist yet. This may also fail with the corresponding status code.
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| 60 | *
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| 61 | * If @a aDirLen is smaller than RTPATH_MAX then there is a great chance that
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| 62 | * this method will return VERR_BUFFER_OVERFLOW.
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| 63 | *
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| 64 | * @param aDir Buffer to store the directory string in UTF-8 encoding.
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| 65 | * @param aDirLen Length of the supplied buffer including space for the
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| 66 | * terminating null character, in bytes.
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| 67 | * @return VBox status code.
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| 68 | */
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| 69 | int GetVBoxUserHomeDirectory (char *aDir, size_t aDirLen);
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| 70 |
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| 71 | }; // namespace com
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| 72 |
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| 73 | #endif
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| 74 |
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