Gets information about which columns (types of event data) are supported by the event list.
HRESULT GetSupportedEventColumns( DWORD numColumns, EventColumnID  count0_pIDs, BSTR  count0_pBstrNames );
The number of columns supported by
The IDs of each column supported by the event list.
The names of each column, as a COM string, supported by the event list.
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.