Um, let's see, Poser, and Max (or some other renderer) works in so called "offline" mode to do it's things. So no realtime stuff.
How long did it take to render those images? More than a second?
In that case, don't even think about it, by the time you have renderd it, and pressed PrintScreen, you will be way later than that moment. If the PrintScreen button even reacts.
And that's even considering BC won't commit suicide just by loading it. ;)