The Data Packet is a location in application storage where the physical mouse device driver returns the mouse device's motion sensitivity to the caller. The format of the Data Packet is as follows:
┌──────────────────────────────────────────────┐ │Field Length C Datatype │ ├──────────────────────────────────────────────┤ │Mickeys/Centimeter WORD USHORT │ └──────────────────────────────────────────────┘