Detect if the ctrl button was pressed
<p>I want to prevent users from printing a page
I thought I would set the screen to not include the toolbars, and prevent right clicks, and prevent <kbd>Ctrl</kbd>+ <kbd>P</kbd>, and the <kbd>Print Screen</kbd> button. 
Can this be done?</p>

<p>Is there any good code out there for this? I have searched quite a bit so far, but not much luck. I know this isn't foolproof, but it will prevent some users from copying or printing.</p>
