Overriding High DPI Scaling from the Command Line

Question

I am compiling and building an OpenCV app on Windows 10, which shows some images.
I want to overrride the high DPI scaling behavior and set it to "Application".

I can do this fine on the .exe file by: Right-Click->Properties->Compatibility Tab and checking the checkbox.:

Is there a command line tool I can use to do that as part of a script?

Solution

You make a bat file script.

Here's how.

Make sure where the application is placed.

If the application is 64 bit "%programfiles%\<appfoldername>\<app>.exe"

If the application is 32 bit "%programfiles(x86)%\<appfoldername>\<app>.exe"

~HIGHDPIAWARE Indicates value of Override high DPI scaling behavior (Application)

~DPIUNAWARE Indicates value of Override high DPI scaling behavior (System)

"~GDIDPISCALING DPIUNAWARE" Indicates value of Override high DPI scaling behavior (System Enhanced) add double quote also

I am doing this for Itunes (64 bit).

Particular User

REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers" /V "%programfiles%\iTunes\iTunes.exe" /T REG_SZ /D ~HIGHDPIAWARE /F

All User

REG ADD "HKLM\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers" /V "%programfiles%\iTunes\iTunes.exe" /T REG_SZ /D ~HIGHDPIAWARE /F

Comments

[Adi Shavit]

So the Win10 prop-dlg actually generates a registry entry too?

[Techie Gossip]

yes. i have tested in windows 10 it worked. its registry to be changed

[Adi Shavit]

Thanks! Will check. Based on your answer I found this from MS which essentially says the same thing :-).

[Javier Vélez]

On Windows 10, I needed a space between the tilde and the dpi scaling value -- "~ DPIUNAWARE"

[rjt]

From @AdiShavit MS link and my own experimentation, "Note that there is a space between the tilde and the HIGHDPIAWARE."

[Rico Picone]

Be sure to change both HKCU and HKLM. Also use quotes around any of these options (e.g. "~ DPIUNAWARE"). Finally, be sure to have the space in there between ~ and DPIUNAWARE, or whichever mode you're going for.