MindSensors NXTHID modifier keys

NXTHID_MOD_LEFT_ALT NXTHID_MOD_LEFT_CTRL NXTHID_MOD_LEFT_GUI NXTHID_MOD_LEFT_SHIFT NXTHID_MOD_NONE NXTHID_MOD_RIGHT_ALT NXTHID_MOD_RIGHT_CTRL NXTHID_MOD_RIGHT_GUI NXTHID_MOD_RIGHT_SHIFT

#define NXTHID_MOD_LEFT_ALT   0x04 NXTHID left alt modifier.