activex events

[Pierre_a]

Hello,
I am using a COM dll server (USBIO) from LABView. I have successfully managed calling its methods and properties. But now I have been trying to use its events call-back functions. I tried to "list events description" from the ActiveX menu. But this function doesn't list anything. I have read in the forum that I probably have to write a wrapper dll to encapsulate the events call.
Do you know
- how difficult this is ?
- What are the principal steps to manage this ?
Thank you very much for your reading.

[Jeremy Braden]

Do you have access to the source of the dll? LabVIEW currently gets its event information from the IProvideClassInfo interface. The interface must be correctly implemented by the object for events to be seen by LabVIEW. I cannot say that I have ever heard of anyone writing a wrapper dll for an activeX server.