Locks the moveable memory for read / write operations.
Atalasoft.DotTwain (in Atalasoft.DotTwain.dll) Version: 184.108.40.206.0.321 (.NET 4.5.2, x86)
If a Read* or Write* method is called, these methods will automatically lock, perform the operation and
unlock the memory. However, if reading or writing multiple values it's better to call Lock and