I assume that if Microsoft hadn't abandoned WinForms for the next thing, it would support dynamic sizing and DPI properly. It's mindboggling how much time and effort they've wasted coming up with new GUI frameworks instead of just improving on what they have.
I don't think it's abandoned and it looks like there is a lot of activity around the high DPI concern.
https://github.com/dotnet/winforms/issues?q=is%3Aissue%20sta...
I remember a marvelous quote from a guy that was at some MS conference and got handed a leaflet that said:
> WinForm or WPF, how to choose
and they were like: "the question I have isn't how to choose, but _why_ I have to choose".
It does, but many still think it is like using VB 6 and don't learn the additional APIs that provide that support, e.g. FlowLayoutPanel and TableLayoutPanel.
And for HiDPI, https://learn.microsoft.com/en-us/dotnet/desktop/winforms/hi...