How to run a fullscreen application at 1920×1080 inside a 4K monitor without changing desktop resolution?
Hi everyone,
I recently upgraded to a 4K monitor (3840×2160), but I frequently need to test industrial HMI/SCADA applications designed for lower resolutions, typically 1920×1080.
The problem is that these applications launch in fullscreen mode, and their graphical interfaces don't always scale properly on a 4K display.
What I'm looking for is a way to run such an application in a fixed 1920×1080 area of my 4K screen, while keeping the rest of my desktop at its native resolution and fully usable.
Ideally:
- The application would behave as if it were running fullscreen on a 1920×1080 monitor.
- It would occupy only a predefined area of my 4K display.
- The remaining screen space would still be available for other applications.
- I wouldn't need to change the Windows display resolution every time.
I've looked into Microsoft PowerToys FancyZones, but as far as I understand, it only manages window placement and sizing rather than creating a virtual display with a specific resolution.
Is there a tool or workaround that can achieve this?
I'm open to solutions involving PowerToys, AutoHotkey, virtual displays, window wrappers, or other utilities.
I'm using Windows 11, and the applications run locally.
Any suggestions or experience with a similar setup would be appreciated!