class COleException : public CException
A COleException object represents an exception condition related to an OLE operation. The COleException class includes a public data member that holds the status code indicating the reason for the exception.
In general, you should not create a COleException object directly; instead, you should call AfxThrowOleException.
For more information on exceptions, see the articles Exception Handling (MFC) and Exceptions: OLE Exceptions.