Do you mean you want to change the language of default (new) documents, or the language of the application itself (the menus, dialogs, etc.)?
I mean the language for new documents and paragraph style language defaults, not the language of the dialogs, menues, buttons ...
in the meantime I think I got it. I can setup several dictionaries for several languages. Depending on the language I use in my paragraph styles the according dictionary will be used. Fine for the desktop.
But what about the InDesign Server! I use the server via scripting and SOAP ports, webservice calls. I've launched several webservice ports, like 10001,10002,10003,10004. In this case, I can set up a vendor dictionary by providing a path via script send to one port 10001 for example. But here are two problems:
1. The other InDesign Server instances aka webservice ports and engines won't get informed about the change. I have to run the script on all instances.
2. The change only lives as long as the instance is running but doesn't get saved. After restart the instance, the setup got lost.
So can I save the dictionary-setup with an pref-xml file, all InDesign Server instances would use and read per default?