QB64 bug when using Inform

[TDarcos]

Or better try make native GUI app

Fine. Please be so kind as to tell me where to find that.

Wait, never mind, I found it: https://github.com/RhoSigma-QB64/QB64GuiTools

Thank you, it's very rare when someone exactly describes what I'm looking for. I first thought you were telling me about something I could use, I didn't realize what you said more-or-less was exactlywhat I needed to look for.
 
Having looked, I see it does its own thing and it creates a non-standard windowing interface, using the much older (and in my opinion less visually pleasing) Amiga OS window format. I'll try fixing the original Inform problem as suggeste, i.e. moving the .h file to the compiler's directory. I may try this GuiTool for something else to see how it works.