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title CComObjectRoot Class | Microsoft Docs
ms.custom
ms.date 11/04/2016
ms.technology
cpp-atl
ms.topic reference
f1_keywords
CComObjectRoot
atlcom/ATL::CComObjectRoot
dev_langs
C++
helpviewer_keywords
CComObjectRoot class
ms.assetid f8797c38-6e73-4f67-85c2-71654cffa8eb
author mikeblome
ms.author mblome
ms.workload
cplusplus

CComObjectRoot Class

This typedef of CComObjectRootEx is templatized on the default threading model of the server.

Syntax

typedef CComObjectRootEx<CComObjectThreadModel> CComObjectRoot;

Remarks

CComObjectRoot is a typedef of CComObjectRootEx templatized on the default threading model of the server. Thus CComObjectThreadModel will reference either CComSingleThreadModel or CComMultiThreadModel.

CComObjectRootEx handles object reference count management for both nonaggregated and aggregated objects. It holds the object reference count if your object is not being aggregated, and holds the pointer to the outer unknown if your object is being aggregated. For aggregated objects, CComObjectRootEx methods can be used to handle the failure of the inner object to construct, and to protect the outer object from deletion when inner interfaces are released or the inner object is deleted.

Requirements

Header: atlcom.h

See Also

CComObjectRootEx Class
CComAggObject Class
CComObject Class
CComPolyObject Class
Class Overview