TBLT_RETC TBLT_ENTRY BltIx4FirstKey(TBLT_KH *khPtr,
VOID *keyBufferPtr,
ULONG *recNoPtr);
khPtr I:index file control structure
keyBufferPtr O:the first key
recNoPtr O:recNo attached to the first key
This routine gets the first key and its recNo.
This routine, like all BltIx4*Key() routines, gets only the
key and recNo attached to that key. With the recNo, the programmer can
get the data record by using BltDataGetRecord(). The
BltIx4Get*() routines do this pairing automatically, and
typically are the routines to use to access the database.
Return: Non-zero indicates an error, otherwise the first key/recNo is returned.