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comptrrefbase-class.md

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description Learn more about: ComPtrRefBase Class
title ComPtrRefBase Class
ms.date 10/03/2018
ms.topic reference
f1_keywords
client/Microsoft::WRL::Details::ComPtrRefBase
client/Microsoft::WRL::Details::ComPtrRefBase::operator IInspectable**
client/Microsoft::WRL::Details::ComPtrRefBase::operator IUnknown**
client/Microsoft::WRL::Details::ComPtrRefBase::ptr_
helpviewer_keywords
Microsoft::WRL::Details::ComPtrRefBase class
Microsoft::WRL::Details::ComPtrRefBase::operator IInspectable** operator
Microsoft::WRL::Details::ComPtrRefBase::operator IUnknown** operator
Microsoft::WRL::Details::ComPtrRefBase::ptr_ data member
ms.assetid 6d344c1a-cc13-4a3f-8a0d-f167ccb9348f

ComPtrRefBase Class

Supports the WRL infrastructure and is not intended to be used directly from your code.

Syntax

template <typename T>
class ComPtrRefBase;

Parameters

T
A ComPtr<T> type or a type derived from it, not merely the interface represented by the ComPtr.

Remarks

Represents the base class for the ComPtrRef class.

Members

Public Typedefs

Name Description
InterfaceType A synonym for the type of template parameter T.

Public Operators

Name Description
ComPtrRefBase::operator IInspectable** Casts the current ptr_ data member to a pointer-to-a-pointer-to the IInspectable interface.
ComPtrRefBase::operator IUnknown** Casts the current ptr_ data member to a pointer-to-a-pointer-to the IUnknown interface.

Protected Data Members

Name Description
ComPtrRefBase::ptr_ Pointer to the type specified by the current template parameter.

Inheritance Hierarchy

ComPtrRefBase

Requirements

Header: client.h

Namespace: Microsoft::WRL::Details

ComPtrRefBase::operator IInspectable** Operator

Supports the WRL infrastructure and is not intended to be used directly from your code.

operator IInspectable**() const;

Remarks

Casts the current ptr_ data member to a pointer-to-a-pointer-to the IInspectable interface.

An error is emitted if the current ComPtrRefBase doesn't derive from IInspectable.

This cast is available only if __WRL_CLASSIC_COM__ is defined.

ComPtrRefBase::operator IUnknown** Operator

Supports the WRL infrastructure and is not intended to be used directly from your code.

operator IUnknown**() const;

Remarks

Casts the current ptr_ data member to a pointer-to-a-pointer-to the IUnknown interface.

An error is emitted if the current ComPtrRefBase doesn't derive from IUnknown.

ComPtrRefBase::ptr_

Supports the WRL infrastructure and is not intended to be used directly from your code.

T* ptr_;

Remarks

Pointer to the type specified by the current template parameter. ptr_ is the protected data member.