com-ptr-t-addref.md

title

_com_ptr_t::AddRef | Microsoft Docs

ms.custom

ms.date

11/04/2016

ms.technology

cpp-language

ms.topic

language-reference

f1_keywords

_com_ptr_t::AddRef

dev_langs

C++

helpviewer_keywords

AddRef method [C++], interface pointers

ms.assetid

c104dac3-aad3-40bb-a298-75c6cd0e63a2

author

mikeblome

ms.author

mblome

ms.workload

cplusplus

_com_ptr_t::AddRef

Microsoft Specific

Calls the AddRef member function of IUnknown on the encapsulated interface pointer.

  
void AddRef( );

Calls IUnknown::AddRef on the encapsulated interface pointer, raising an E_POINTER error if the pointer is NULL.

END Microsoft Specific