Sorry, I have been unavailable for over a month. Life was keeping me from my hobby.
With that said, I unzipped wxWidgets 3.2.2.1 into "C:\Program Files\CodeBlocks\wxWidgets-3.2.2.1", setup the search paths in the compiler options "$(#wx.LIB)\gcc_lib\mswu" and "mswud", setup the global "wx" variable pointing to the correct places, and went in and built both debug and release builds of wxWidgets using a command-prompt as follows.
cd "Program Files\CodeBlocks\wcWidgets-3.2.2.1\build\msw
mingw32-make -f makefile.gcc SHARED=0 MONOLITHIC=0 UNICODE=1 BUILD=debug
mingw32-make -f makefile.gcc SHARED=0 MONOLITHIC=0 UNICODE=1 BUILD=release
I then changed to the "samples/minimal" directory and built that project. It builds and runs flawlessly. However, I can never finish the wizard due to it erroring out at the end, telling me it can't find matching debug or release builds. I do intend on using wxWidgets in my project so I can build it under Linux as well.
I saw the suggestion to use a nightly CB build. It's been almost four years since the last release. Is there ever going to be another stable release or at least a patch release to bring 20.03 up to current-day library support for things like wxWidgets? I despise what MSVS has become (I am NOT creating a damn account just to use an IDE!) and CB has been my go-to since around 2010. I just wish it was up-top-date.