Are you interested in further development of this thing?
The next windows aero effect - YouTube

Thank you,
I saw that AppliedDPI changed to 96 after I changed it to 100 in this GUI after I re-logged in to my user.

I will keep testing this.. I hope that this Key is only about the main screen...

Hello,
How can I get this value:
http://prntscr.com/8ck5rg

From the registry?

I know that in this case I need also to know what is the primary display or how to get only the primary display...