ActiveX Events

[Pierre_a]

Hello,
I am using a COM dll server (USBIO in attachment) from LABView. This is only a COM server and NOT an activeX control. I have successfully managed calling its methods and properties (with the activeX "Invoke node" and "Property node"). 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.
Does normally the ActiveX "list events description" function success with a dll COM server ?
I know that this COM server can be accessed from Visual Basic (properties, methods, AND EVENTS). I have read in the forum that I probably have to write a wrapper dll to encapsulate the events call, or perhaps writing an activeX control in Visual Basic.
D
o you know
- how difficult these are ?
- What are the principal steps to manage these ?
Thank you very much for your reading.

[Jeremy Braden]

Pierre_a,

Multiple posting of the same question is not likely to result in an answer. The die-hard experienced regular posters of this forum are volunteers and rarely do not answer a question that they know the answer to. I have attached links to your other postings so that the volunteer that decides to help can have access to all of the information.


ActiveX Events "Object specified is not creatable"
activex events
ActiveX Events
activex events
activex events

In my opinion the answer to your first question is that it will be very difficult to create wrappers for COM dll servers. I do not have the slightest idea how to go about doing this and I have used LabVIEW intensively for years. Because I am ignorance of COM dll servers, I recommend digging through the web in the slight chance that someone else encountered a similar problem and was kind enough to publish their efforts.

Finally, you mentioned that you read �in the forum that I probably have to write a wrapper dll�
. Can you provide a link so that others can understand more about the potential solution?