Toggle <PrintScreen> Capture On/Off

Recently,SC now captures the <PrintScreen> and passes it on to the guest. If you are using a 3rd party screen capture, you can no longer do this (unless you take focus off the SC screen).

While SC has the ability to capture screens, it is cumbersome. For example, I print to file my screenshots. With SC, you can only save to file or Clipboard.

I propose the ability to toggle on/off this passing to the guest machine.