Returns the name of the component that generated the error, such as "ODBC <driver-name>".
HRESULT GetSource ( BSTR *pbstrSource);
[out] A pointer to memory in which to return a pointer to the name of the component that generated the error. If an error occurs, *pbstrSource is set to a null pointer. The memory for this string is allocated by the provider and must be freed by the consumer with a call to SysFreeString.
The method succeeded.
pbstrSource was a null pointer.
The provider was unable to allocate sufficient memory in which to return the component name.
The locale ID specified by the lcid parameter in IErrorRecords::GetErrorInfo was not supported by the provider.
The implementation of this method in the data access technologies calls IErrorLookup::GetErrorDescription to retrieve the error source.