Button commands that have to do with filtering motion data (Pan/Zoom Only, Tilt/Spin/Roll Only, Pan Only, Zoom Only, Toggle Translations, Toggle Rotations, Toggle Dominant Axis) or changing device settings (Increase Speed, Decrease Speed, Calibrate) are handled by the driver. There's no need to process these within your application.
A note on Pan/Zoom Only, Tilt/Spin/Roll Only, Pan Only, and Zoom Only. These commands are only active while the button is being pressed. Once you release the button, the previous state of events being sent by the driver resumes. Only the Toggle XX commands actually change the filtering of data even after the button is released