Hi
Well, ofc. you could've just
read this thread and found this quote:
Note that fpGUI for LCL is work in progress but not yet usable, only "pure" fpGUI widgetset is working and dont needs LCL nor Interfaces.
by @Fred vS.
My own experiments also shy away from the LCL and
uses the pure/raw fpGUI repository.Look at the various examples / demos and work your way forwards from there, it's quite easy

It ofc. depends on the amount of spaghetti you have to /
untangle/ to loose the LCL...?
Regards Benny