In the Following simple solution, I show you how to "Print Screen" (take a Screenshot) while running from Windows on a Macbook Pro. Since a Mac does not have a physical PrintScreen (PrtScn) key on its keyboard, another BootCamp mapped key or key combination must be used in place of the familiar Print Screen button.
How to PrintScreen on a MacBook Keyboard from Windows:
Shift + F11 (to take Screenshot of entire page)
Alt + Shift + F11 (to take Screenshot of active window)
If your Function Key controls the hardware, add the Fn function key:
Shift + Fn + F11 (to take Screenshot of entire page)
Alt + Shift + Fn + F11 (to take Screenshot of active window)