//if child.splitter-moved is "UpdateP"
mob/proc/UpdateP()
world << winget(src,"child","splitter")
In this example, every time the player moves the splitter, the splitter position would be outputted to the world. This would enable bars and similar features.
It would also be nice to be able to give a splitter an image, giving a splitter a more professional look.
EDIT: I meant sliders, not bars.
What do you mean by bars and similar features?
If you're referring to things like health bars, using a splitter wouldn't be that crash-hot of an idea. The easiest method I found for doing something like that was a label. And just changing it's size as necessary.