The Data Packet is a location in application storage where the physical mouse device driver returns to the caller the current mouse scaling factors. The format of the Data Packet is as follows:
┌───────────────────────────────────────┐ │Field Length C Datatype │ ├───────────────────────────────────────┤ │Row Data WORD USHORT │ ├───────────────────────────────────────┤ │Column Data WORD USHORT │ └───────────────────────────────────────┘