Call GetIndexInfo to update information about the current index. Ordinarily an application does not need to call GetIndexInfo because this routine is used internally to retrieve index information as needed. Some applications, however, may want to ensure that the index information used by the dataset is up-to-date. 

GetIndexInfo queries the BDE for index information, including: 

Whether the current index is a dBASE expression index. 

Whether the index is case insensitive. 

The number of fields that make up the key for the index. 

The field map for the index. 

The size of the index key. 

Number of fields and field map are not retrieved if the index is a dBASE expression index. 

ExpIndex