ContGen-IntClk - DoneCallback

[Wolfgang]

Because DoneCallback has to adhere to the prototype

int32CVICALLBACK Callback (TaskHandletaskHandle, int32 status, void *callbackData)

the type of arguments are known.

[hn_sofec]

pardon my ignorance., does it mean that DoneCallback() gets its arguments (taskHandle, status, and callbackData)  from DAQmxRegisterDoneEvent() from its prototype declaration?

[Wolfgang]

oh, I was hoping my explanations would have been better...

DoneCallback() gets two of its arguments (taskhandle and callbackData) from the arguments passed to DAQmxRegisterDoneEvent()

[hn_sofec]

I see, and it gets the (status) argument too right?

[Wolfgang · Accepted solution]

The status parameter is generated by the DAQmx task and thus its value is also known when DoneCallback is called by DAQmxRegisterDoneEvent ().

[hn_sofec]

and that is pass into DoneCallback?

[Wolfgang]

I assume so (I don't know the internal design of the DAQmx driver)