Get the number of active records in a fixed length data file.
This function returns the length of a variable-length data record.
Locks and unlocks data records.
Returns the next available record position in a fixed-length data file.
Returns the next available record position in a variable-length data file.
Use to read a fixed-length data record.
Read a variable-length data record. Use VDataLength() before calling ReadVData() to ensure the buffer is large enough to hold the record.
Deletes a fixed-length record from a data file, making it available for use by the next call to NewData().
Deletes a variable-length data record from a data file, making it available for use by the next call to NewVData().
Writes a fixed-length data record to the file.
Writes a variable-length data record to the file.