GetTapePosition

[DllImport("Kernel32.dll", SetLastError = true)][return: MarshalAs(UnmanagedType.Bool)]
public static extern bool GetTapePosition(
   IntPtr hDevice,
   uint dwPositionType,
   out uint lpdwPartition,
   out uint lpdwOffsetLow,
   out uint lpdwOffsetHigh
);

Microsoft documentation: Link