This interface should be used to receive notifications from device driver ActiveX controls. Notice that measurement instruments usually contain slow ADC's with typical conversion time of hundreds milliseconds, so that data exchange is essentially asynchronous. Events allows you send and receive data when they are ready, without wait.
|OnCreate||1||Fires when device is created|
|OnDestroy||2||Fires when device is destroyed|
|OnData||3||Fires when device data is ready|