Is it possible to shove a self-made widget into a library (not a designer plugin)?

Question

Programming

Actually, I have a need to put the widget into the library. At the same time, I don’t need to add it to the designer (and I don’t need to make it a plugin for QtCreator at all), but simply make it in the form of a .dll or .so that is linked to the project. With regard to this task, it does not really matter whether the library is statically or dynamically linked.
I tried to do it just as a library (template = lib), but when compiling, the linker does not find the widget constructor.

Answer 1

This is implemented by means of QtPlugins - these are not plugins for QtCreator, this is exactly a tool for dynamically gluing a Qt program.