Accessing mainWindow from service class?

Support
#1

Is it possible to access the mainWIndow from a service class? I see on another topic that it is possible to access the mainWindow from another screen using AppUI but that doesn’t seem to work from a service class.

#2

It’s impossible because they are on different tiers - services are on middleware and screens are on the client. They can even be deployed to separate JVMs or servers.

#3

Thanks Konstantin. I was inwardly hoping the arrows on that picture were bi-directional for access.