The following CComBSTR methods have been added since ATL 1.1:
| Method | Description |
| Append | Appends a string to the CComBSTR object. |
| AppendBSTR | Appends a BSTR to the CComBSTR object. |
| Length | Returns the length of CComBSTR object's BSTR member. |
| ReadFromStream | Loads the CComBSTR object from a stream. |
| WriteToStream | Saves the CComBSTR object to a stream. |
| operator += | Appends another CcomBSTR object to your CComBSTR object. |