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Detect when users take screenshots of my program

I am writing a windows application. How can I find out when a screenshot is taken? I read about how to detect hotkey presses, but I am more concerned about the case when every other 100 ms or so another program takes screenshots. Namely, I'm trying to notice when someone creates another program (say, a python using ImageGrab, as mentioned in another post) that constantly takes screenshots of my application and uses them to read information about it.

I don't care about preventing screenshots from being taken - I can simply prevent the user from seeing this behavior.

Is it possible? Does a Windows message appear when an application takes a screenshot, for example, using WM_HOTKEY? Or do windows simply use the latest information from the latest paint events and return it to another program directly, without the possibility of my application at all?

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There is one way that I think can stop it. learn about technology that blurs the graphic display when it is duplicated, for example.

screenshot, photographed by a digital camera screenshot from virtual os.

play with him, who knows that you can come up with something that will make millions.

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