When I do this command:

lnHandle=SQLStringConnect("Driver={Microsoft Visual FoxPro Driver};SourceType=DBF;SourceDB=d:\data;Exclusive=No;NULL=NO;
 Collate=Machine;BACKGROUNDFETCH=NO;DELETED=NO")

lnHandle contains a valid ID. If I do the command again, lnHandle increments by one. So, this shows that the connection is valid.

Now, when I try to do this:

? SQLEXEC(lnHandle,"SELECT * FROM Customer")

It always return -1. What am I missing?