This event uses x_move and y_move to communicate the difference in x and y of the midpoint of all present touch touches between the current and last event sent from the touchscreen.

Data

uint32_t    button
uint32_t    timestamp
int16_t     subtype
int16_t     x
int16_t     y
int16_t     z
int16_t     id
int16_t     spare
float       value
float       x_move
float       y_move
int16_t     npoints
                    

Where: