I do not know the sure answer, because the caller app usuallay in a wait state (user sits and see the form, nothing else). So, I have never met this issue.
I suspect that it works like an active-x event. There is a sys setting for these events to occur asyncronously.

bb

>Hi Bela,
>
>>I did the following. Instead to use a polling timer, it would have been better to have an executed event at the time when the com VFP object had finished the data processing, but how to achive it?
>>Easy: when I call the method of the process starting I also give the Application object as parameter.
>>The com object will call a method on the caller object. (this is the stop event)
>
>I had thought about this possibility as well, since it eliminates the DDE-setup.
>Will this interrupt running code in the application object or wait for periods of inactivity like a timer event ? Is the interrupt/wait behaviour documented/stable over different vfp versions ?
>
>regds
>
>thomas