| title | CComQIPtr Class | Microsoft Docs | |||||||||||||
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| ms.custom | ||||||||||||||
| ms.date | 11/04/2016 | |||||||||||||
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| ms.topic | reference | |||||||||||||
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| ms.assetid | 969cacb5-05b6-4af4-b683-24911d70242d | |||||||||||||
| caps.latest.revision | 19 | |||||||||||||
| author | mikeblome | |||||||||||||
| ms.author | mblome | |||||||||||||
| manager | ghogen | |||||||||||||
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A smart pointer class for managing COM interface pointers.
template<class T, const IID* piid= &__uuidof(T)>
class CComQIPtr: public CComPtr<T>
T
A COM interface specifying the type of pointer to be stored.
piid
A pointer to the IID of T.
| Name | Description |
|---|---|
| CComQIPtr::CComQIPtr | Constructor. |
| Name | Description |
|---|---|
| CComQIPtr::operator = | Assigns a pointer to the member pointer. |
ATL uses CComQIPtr and CComPtr to manage COM interface pointers, both of which derive from CComPtrBase. Both classes perform automatic reference counting through calls to AddRef and Release. Overloaded operators handle pointer operations.
CComQIPtr
Header: atlcomcli.h
The constructor.
CComQIPtr() throw();
CComQIPtr(T* lp) throw();
CComQIPtr(IUnknown* lp) throw();
CComQIPtr(const CComQIPtr<T, piid>& lp) throw();
lp
Used to initialize the interface pointer.
T
A COM interface.
piid
A pointer to the IID of T.
The assignment operator.
T* operator= (T* lp) throw();
T* operator= (const CComQIPtr<T, piid>& lp) throw();
T* operator= (IUnknown* lp) throw();
lp
Used to initialize the interface pointer.
T
A COM interface.
piid
A pointer to the IID of T.
Returns a pointer to the updated CComQIPtr object.
CComPtr::CComPtr
CComQIPtr::CComQIPtr
CComPtrBase Class
Class Overview
CComQIPtrElementTraits Class