Almost all of us know that the Print Screen (Prt Scr) key on our keyboard is used to take a screenshot of our entire screen in Windows. What most people don't know is how to capture the view of only the selected window. When I didn't know this trick I used to take screenshot of the whole screen by using the Print Screen key and then cropping it in any software (like Photoshop or MS Paint) which is obviously a tedious thing to do. But here's what you should actually be doing.