Is it possible to open a new window to the file of my choice when someone tries to copy text on my website? So when they click and drag the mouse to copy some text a new window will open.
the only way you can accomplish this is throuh Javascript, but then you run into browser compatibility issues, and what if they have Javascript turned off in the settings (to avoid running into things like this). What are you actually trying to accomplish - maybe there's another approach to the problem you're trying to solve here.
you have to monitor the clipboard and it's not possible in all browsers and also in browsers with javascript turned off
Think the answer to your question 0 I am assuimng its can I stop people copying my content - is no. If they want to they can just scrape it using a content generator.