Think first of the implications of what you're thinking you can do to client side. If what you want would be possible without the client side to have anything to say, a lot of other bad things would easily be possible, like illegal remote control and so on.
One other thing to note, very important, is that by pushing the envelope with this type of crappy control attempts on client side, may also result in your site being classified as malware site.
And, you do realize that there are screen recorder apps, that will just put your print screen blocking attempts to shame? What you're going to do, take control of the client machine and disable screen recording as well? :lol: Your approach screams out loud that this is amateur hour coupled with unrealistic expectations.
In conclusion, get back to the drawing board or live with how things are on the web: users can do whatever they want on their machine, as it should be, and you can't even control the browser they choose to see your page.