Is it possible to choose the default screen in a multi monitor configuration?

In C++ you got this:

https://docs.unrealengine.com/latest/INT/API/Runtime/Core/GenericPlatform/FDisplayMetrics/index.html

First you call this to get the metrics:

FDisplayMetrics Display;
FDisplayMetrics::GetDisplayMetrics(Display);

And then you check how many moniters there is by checking MonitorInfo array size with Display.MonitorInfo.Num()

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