IMGU_ABI_EVTTYPE_EVENT_SHIFT
#define IMGU_ABI_EVTTYPE_EVENT_MASK (0xff << IMGU_ABI_EVTTYPE_EVENT_SHIFT)
IMGU_ABI_EVTTYPE_EVENT_SHIFT;
IMGU_ABI_EVTTYPE_EVENT_SHIFT == IMGU_ABI_EVTTYPE_TIMER)