I wrote a small "reg" file to add Notepad++ to the list of "Default applications". I don't know the correct English name, I'm sorry for it, so let me show you, what I mean: (screenshot attached)
You can simply download and run the attached "reg" file.
Please tell me what you think about it? Maybe it's something for the installer?
PS: The description is "Notepad++" right now. It can be changed later...
Registry file
Screenshot - Example: Paint.NET