title
Compiler COM Support Classes | Microsoft Docs
ms.custom
ms.date
11/04/2016
ms.reviewer
ms.suite
ms.technology
ms.tgt_pltfrm
ms.topic
language-reference
f1_keywords
dev_langs
helpviewer_keywords
cl.exe compiler, COM support
COM, compiler support
ms.assetid
6d800d9b-b902-4033-9639-740a30b06f88
caps.latest.revision
6
author
mikeblome
ms.author
mblome
manager
ghogen
translation.priority.ht
cs-cz
de-de
es-es
fr-fr
it-it
ja-jp
ko-kr
pl-pl
pt-br
ru-ru
tr-tr
zh-cn
zh-tw
Compiler COM Support Classes Microsoft Specific
Standard classes are used to support some of the COM types. The classes are defined in comdef.h and the header files generated from the type library.
Class
Purpose
_bstr_t Wraps the BSTR type to provide useful operators and methods.
_com_error Defines the error object thrown by _com_raise_error in most failures.
_com_ptr_t Encapsulates COM interface pointers, and automates the required calls to AddRef, Release , and QueryInterface.
_variant_t Wraps the VARIANT type to provide useful operators and methods.
END Microsoft Specific
Compiler COM Support Compiler COM Global Functions C++ Language Reference