_com_ptr_t::operator =
The latest version of this topic can be found at _com_ptr_t::operator =.
Microsoft Specific**
Assigns a new value to an existing _com_ptr_t object.
Syntax
template<typename _OtherIID>
_com_ptr_t& operator=(
const _com_ptr_t<_OtherIID>& p
);
// Sets a smart pointer to be a different smart pointer of a different
// type or a different raw interface pointer. QueryInterface is called
// to find an interface pointer of this smart pointer's type, and
// Release is called to decrement the reference count for the previously
// encapsulated pointer. If QueryInterface fails with an E_NOINTERFACE,
// a NULL smart pointer results.
template<typename _InterfaceType>
_com_ptr_t& operator=(
_InterfaceType* p
);
// Encapsulates a raw interface pointer of this smart pointer's type.
// AddRef is called to increment the reference count for the encapsulated
// interface pointer, and Release is called to decrement the reference
// count for the previously encapsulated pointer.
template<> _com_ptr_t&
operator=(
Interface* pInterface
) throw();
// Sets a smart pointer to be a copy of another instance of the same
// smart pointer of the same type. AddRef is called to increment the
// reference count for the encapsulated interface pointer, and Release
// is called to decrement the reference count for the previously
// encapsulated pointer.
_com_ptr_t& operator=(
const _com_ptr_t& cp
) throw();
// Sets a smart pointer to NULL. The NULL argument must be a zero.
_com_ptr_t& operator=(
int null
);
// Sets a smart pointer to be a _variant_t object. The encapsulated
// VARIANT must be of type VT_DISPATCH or VT_UNKNOWN, or it can be
// converted to one of these two types. If QueryInterface fails with an
// E_NOINTERFACE error, a NULL smart pointer results.
_com_ptr_t& operator=(
const _variant_t& varSrc
);
Remarks
Assigns an interface pointer to this _com_ptr_t object.
END Microsoft Specific