IOCTL_MOUSE_ATTACH		equ CTL_CODE(FILE_DEVICE_UNKNOWN, 800h, METHOD_BUFFERED, FILE_WRITE_ACCESS)
IOCTL_MOUSE_DETACH		equ CTL_CODE(FILE_DEVICE_UNKNOWN, 801h, METHOD_BUFFERED, FILE_ANY_ACCESS)
IOCTL_GET_MOUSE_DATA	equ CTL_CODE(FILE_DEVICE_UNKNOWN, 802h, METHOD_BUFFERED, FILE_READ_ACCESS)
IOCTL_INVERT_BUTTONS	equ CTL_CODE(FILE_DEVICE_UNKNOWN, 803h, METHOD_BUFFERED, FILE_WRITE_ACCESS)
IOCTL_INVERT_MOVEMENT	equ CTL_CODE(FILE_DEVICE_UNKNOWN, 804h, METHOD_BUFFERED, FILE_WRITE_ACCESS)

MOUSE_DATA STRUCT
	LastX				DWORD	?
	LastY				DWORD	?
	union
		Buttons			DWORD	?
		struct
			ButtonFlags	WORD	?
			ButtonData	WORD	?
		ends
	ends
MOUSE_DATA ENDS
PMOUSE_DATA typedef ptr MOUSE_DATA

MAX_MOUSE_DATA_ENTRIES	equ 100		; The number of entries in list of MOUSE_DATAs
									; should not exceed this value