The following CComVariant methods have been added or changed since ATL 1.1:
| Method | Description |
| Attach | Attaches a VARIANT to the CComVariant object. |
| CComVariant | The constructor takes additional parameter types. |
| ChangeType | Converts the CcomVariant object to a new type. |
| Clear | Clears the CcomVariant object. |
| Copy | Copies a VARIANT to the CcomVariant object. |
| Detach | Detaches the underlying VARIANT from the CComVariant object. |
| ReadFromStream | Loads the CComVariant object from a stream. |
| WriteToStream | Saves the CComVariant object to a stream. |
| operator = | Takes additional parameter types. |