ClearType has been "disabled" in win 8 and 10 +. Some crazy Microsoft wan?$er called Murray Sargent did this to us. DirectWrite which is the latest MS text engine, only offers grayscale antialiasing despite having a new and super-duper ClearType engine incorporated!
Murray said because they can't make animations look so smooth with ClearType enabled, since it takes a lot of graphical processing, they will just throw the baby out with the bathwater and disable ClearType since “gray-scale anti-aliasing should suffice”! That’s right; totally abysmal, how the guy still has a job is simply astonishing.
All because he wanted word to have subtle tiny animations on things, like anyone gives a sh?t when you want to type out a letter. Yea thanks Murray you total co?k, I’d prefer to be able to read what I type, how about that. He basically stuck two fingers up at everyone who hasn’t got a minimum of a 110dpi monitor. Because that’s what you need to display grayscale antialiased text smoothly, yes it is possible but it’s going to cost you. Murray got a nice brown envelope from many monitor manufactures me thinks!
I don’t know if at some low level WPF can be forced to display using ClearType over grayscale antialiasing when the monitor DPI is calculated to be less than 110dpi, but that would be interesting. For now, I am not sure it can unless the app is running on win 7.