Gets the current record number of a device. If the device is record-based, the record number ranges from 1 to the maximum size of the file. If the device is free-format, the record number ranges from 0 to the maximum byte size -1.
The device handle, returned from the DevOpen() function. The device handle identifies the table where all data on the associated device is stored.
The record number. If an error is detected while getting the record number, -1 is returned.
! Get the current record number.