Upgrading from v2017 and dealing with breaking changes - by: BAUMGARTNER

Hello,

I recently started investigating on upgrading our version of OPCLabs to the latest one in order to solve a bug related to Win10 now preventing us from installing .NET v4.5.2 (dependency of OpcLabs v2017).

Anyway, i'm facing what seems to be breaking changes introduced between then and now. Here are the one I encountered thus far :

1. TEasyDAClient no longer has a implementation of SubscribeMultipleItems taking a PSafeArray as input, it now takes an OleVariant. We were using that implementation.
2. _EasyDAItemChangedEventArgs no longer has an Integer « ErrorCode » Member.
   
   I can see it now has an sting « ErrorId » member but i’m not sure I should be treating it the same way.
3. The entire TEasyUAClient class seems to be missing, or most likely has been renamed?, in the new version.

Thank you in advance for any guidance you can provide on solving these issues.

Regards,

Mathieu