It has been suggested at the July 29th 2020 online voice chat meeting.
There was one main concern raised, regarding the "skinability" of this GUI library, which is of course an important criteria. FO is a game, and whatever GUI library or engine we're going to use needs us to allow to customize the visuals to a very high degree.
I found an entry in the FAQ of ImGui, which answers this specific question:
https://github.com/ocornut/imgui/blob/m ... dear-imgui
To quote the relevant paragraph:
Emphasis added.You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Dear ImGui is NOT designed to create user interface for games, although with ingenious use of the low-level API you can do it.
IMO that pretty much answers our question. Considering that, I don't think that ImGui is a viable option for us, but others might disagree. Please give your comments/opinions, if we should consider ImGui regardless, or rule that option out.