CComObjectStack Class

This class creates a temporary COM object and provides it with a skeletal implementation of IUnknown.

template< 
   class Base  
> 
class CComObjectStack : 
   public Base

Parameters

• Base
  Your class, derived from CComObjectRoot or CComObjectRootEx, as well as from any other interface you want to support on the object.

Members

Public Constructors

Name	Description
CComObjectStack::CComObjectStack	The constructor.
CComObjectStack::~CComObjectStack	The destructor.

Public Methods

Name	Description
CComObjectStack::AddRef	Returns zero. In debug mode, calls _ASSERTE.
CComObjectStack::QueryInterface	Returns E_NOINTERFACE. In debug mode, calls _ASSERTE.
CComObjectStack::Release	Returns zero. In debug mode, calls _ASSERTE. ~

Public Data Members

Name	Description
CComObjectStack::m_hResFinalConstruct	Contains the HRESULT returned during construction of the CComObjectStack object.

Remarks

CComObjectStack is used to create a temporary COM object and provide the object a skeletal implementation of IUnknown. Typically, the object is used as a local variable within one function (that is, pushed onto the stack). Since the object is destroyed when the function finishes, reference counting is not performed to increase efficiency.

The following example shows how to create a COM object used inside a function:

void MyFunc()
{
   CComObjectStack<CMyClass2> Tempobj;
   //...
}

The temporary object Tempobj is pushed onto the stack and automatically disappears when the function finishes.

Inheritance Hierarchy

Base

CComObjectStack

Requirements

Header: atlcom.h

See Also

Reference

CComAggObject Class

CComObject Class

CComObjectGlobal Class

Other Resources

ATL Class Overview