SQLRowCount is ODBC API function. It returns the number of rows affected by an UPDATE, INSERT, or DELETE statement.

It is declared as

SQLRETURN SQLRowCount(
     SQLHSTMT     StatementHandle,
     SQLINTEGER *     RowCountPtr);

FoxPro declaration

DECLARE SHORT SQLRowCount IN odbc32;
	INTEGER   StatementHandle,;
	INTEGER @ RowCountPtr

MSDN link:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odbc/htm/odch21jpr_2.asp

Before using this particular function you have to use many other ODBC API function to connect, create statement handle etc.

In most imaginable situations native _TALLY is good enough. I hardly can find a reason of using the SQLRowCount.