I couldn't find any posts covering Dialog-Based WinGUI apps, so I decided to play with it.
Using ResEdit and windres, I didn't have to code any of the GUI objects.
Example is in this repository: Demo
I looked into this in response to several posts I've seen where people were asking about using a Designer to lay out their apps.
Even though Dialog-Based apps are way out of fashion, they're still usable.
Note that you'll need Winim installed for this to work.
Just run the included Makefile.
AIR.