Bitfields for DESQview pointer status:
Bit(s)	Description	)
 7-2	number of clicks-1 if multiple-click mode active
 7	set when press/release mode active and button pressed
 6	set when press/release mode active and button released
 1-0	button pressed (00=none,01=button1,10=button2)
SeeAlso: #00437