There is a new option for the End User in Windows 10 Creator's Update Edition. The End User can change properties for an EXE on the compatibility tab to "Override High DPI Scaling Behavior" and set it to System (Enhanced). I tested it and it works well for some classic win32 apps.
I want to to do this by code through an API call or through the manifest. There is no information on that. Is that possible? From the comment I got, it want to clarify that this is a NEW CREATORS UPDATE FEATURE and I particularly want to know how to set the "SYSTEM (ENHANCED)" choice for override feature through manifest or code.
I found the answer in another SO post: Enhanced system DPI scaling with VS2017
The correct clue is to investigate the new GDI Scaling manifest that is vastly improved in Creator's Update. That is used in System (Enhanced) setting.
None of the answers or comments came close. They kept referring to old articles. Moreover, someone marked the question negative:( Sad.