HelenOS sources

MOUSEEV_ABS_MOVE_EVENT  200 uspace/drv/hid/usbhid/mouse/mousedev.c 			async_msg_4(exch, MOUSEEV_ABS_MOVE_EVENT,
MOUSEEV_ABS_MOVE_EVENT  132 uspace/srv/hid/input/proto/mousedev.c 		case MOUSEEV_ABS_MOVE_EVENT:
MOUSEEV_ABS_MOVE_EVENT  110 uspace/srv/hid/isdv4_tablet/main.c 		async_msg_4(exch, MOUSEEV_ABS_MOVE_EVENT, event->x, event->y,
HelenOS homepage, sources at GitHub