I am trying to insert a simple item separator (horizontal line) in my combobox which cannot be selected and is there just for the design - separating groups of combobox items.
I have browsed some answers, yet none of them actually gave the finite answer (whether it is or it is not possible).
Anyone had a chance to implement anything like this? I can surely add new item with the following text "---------------" but I am keeping it as a plan B.