Want to change font size without log off

Ok, so I basically want to change the font size (DPI) without logging off. Reason is: I want to script this so that I can change font size to 100%, launch and play Amnesia: The Dark Descent, then change font size back to 150%.

So my question is can it be done easily? And if not easily, what processes control that option? I've tried changing my settings then killing dwm.exe and explorer.exe to see if that would force the settings to kick in but alas, it did not. So if I can find which processes /services do control that, I can restart them in my script and accomplish the same thing.

Thanks a lot!



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