Using a reference to an xcontrol in a class

Question

Herbert wrote:
I really was not aware that all classes, and maybe also lvlib's,
lvlib no, lvclass yes and I think also xctl and xnode, although I'm not sure about those.

Answer 1

Hi.
I want to use dynamic dispatch OOP-methods to write to Xcontrols on the front panel of the main VI. In the image below, I have illustrated a very simple example, using static methods.
However, as soon as I introduce a strict reference to the Xcontrol anywhere into the class, the Xcontrol becomes locked, even when all VI's of the project are closed. I know, I can unlock the Xcontrol, edit it and lock it again.
However, in my real project, I have an additional Singleton that is used both in main as well as in one of the Xcontrols. This class then becomes completely locked meaning that there is no possibility any more to edit it from within the project or do a search for callers. The latter is quite annoying as this makes any search for callers impossible, as the search is done on VI's in memory.
Is there a reason for this locking, when nothing but the project is open, is there some alternative solution?
Herbert