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I am authoring a software that should work properly when a Windows environment has multiple displays attached to it.

Sadly, I only have a single monitor attached to my PC so I cannot easily test the software I am authoring.

Are there recommendations that would allow creating such virtual monitor devices and let me have multiple displays on my machine?

ahmet alp balkan
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2 Answers2

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Additional Windows displays (up to 4) can be easily create using the Spacedesk app.

Your Android/Apple smartphone, tablet or Windows 7/10 PC will be a real extended Windows displays. All regular functions for testing your app will work, including Windows Extended Desktop.

IGRIG
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  • I’m not sure if you’ve correctly understood my question. I don’t want to use external devices as displays. – ahmet alp balkan Jan 04 '22 at 00:06
  • There are no ways to get a pure virtual display under Windows. WDDM Source-Target model does not allow you to do this without setting *Target.* As a temporary option for testing applications, Spacedesk will be the easiest way. Phone or Tablet to organize *Target* is always there. You can check all Windows multi-display options (Win-P), including Windows Extended Desktop mode. – IGRIG Jan 07 '22 at 22:20
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Since 2022, it’s now possible with the new Microsoft Indirect Display Driver API, there are already a few tutorials and an open-source implementation. There are also closed-source (but free) implementations such as Amyuni’s.

gaborous
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