I took a quick look at plugguieditor.cpp and I don’t see any compiler directives for linux, so I assume it’s not supported. Any plans in this regards?
For what do you need this?
I use plugguieditor to build user interfaces for my applications on Windows and macOS. I would like to try to do the same for Linux, unless of course there is a better way.
Check out the standalone folder inside of vstgui. For Linux the standalone library still needs work to do, but without menu it’s already usable.