Also, if you are coding native windows apps, how are the existing native UI frameworks failing you? What drove you to roll your own?
About your second question, I was using win32, in the past I used winUI, but always wanted HTML-CSS for manage the UI, but without the JS overhead.
I started building it and now I think it's at good level and usable. I published some showcases, still thinking if and how publish it
I'll update the 3 example too if could help (:
Also, if you are coding native windows apps, how are the existing native UI frameworks failing you? What drove you to roll your own?