_com_ptr_t::QueryInterface
The latest version of this topic can be found at _com_ptr_t::QueryInterface.
Microsoft Specific**
Calls the QueryInterface member function of IUnknown on the encapsulated interface pointer.
Syntax
template<typename _InterfaceType> HRESULT QueryInterface (
const IID& iid,
_InterfaceType*& p
) throw ( );
template<typename _InterfaceType> HRESULT QueryInterface (
const IID& iid,
_InterfaceType** p
) throw( );
Parameters
iid
IID of an interface pointer.
p
Raw interface pointer.
Remarks
Calls IUnknown::QueryInterface on the encapsulated interface pointer with the specified IID and returns the resulting raw interface pointer in p. This routine returns the HRESULT to indicate success or failure.
END Microsoft Specific