Hello.

According to documentation:

A DXGI swap chain relinquishes full-screen mode only when absolutely necessary. This means that you can debug a full-screen application using multiple monitors, as long as the debug window doesn't overlap the swap chain's target window.

But when I call

swapChain->SetFullscreenState()

one monitor shows an output and another becomes black.

You realise that you need to be on a breakpoint or uncaught exception to debug right?

You realise that you need to be on a breakpoint or uncaught exception to debug right?

Yes, of course. The code hits a breakpoint, but still my second monitor is just black.

It depends, if you just want to follow the running debug output, you might want to use a 2nd monitor and execute and or debug on the 2nd one (extend desktop)

I'm doing exactly that.

I would think you need to use "extend desktop" and make the monitor you want to debug on/ see visual studio during debugging, the secondary one. Then the app should run on the primary one (if not, you might have to force this through either your code or the device driver)

Exactly! Thank you very much! )