I can add that using MFC to create an activex control the properties, methods and events are recognised by LabView but none of them work.
Implementing a similar object using an ATL DLL the properties and methods do work but the activex events are not recognised by LabView. I'm don't currently understand why the differences occur, though the fact that the ATL version was not an OCX may account for something. However I've not had any success using MFC to create an ActiveX control that works with LabView, although again I can verify a VB control does work but VB is not suitable for our purposes so it's not a solution.
Any further insight appreciated!
Myles