I have no problems using PowerDVD to capture screen shots from DVDs.  I have SnagIt, but since PowerDVD will do it for the DVD overlay, only use it for other screen caps.

And this is why 'Print Screen' won't work.  Most of the time, video is played in what is called 'overlay' mode.  The video is streamed through a different interface than the one regularly used by the OS and applications for screen display.  It's also related to the reason you can capture with or without the mouse in certain applications (like SnagIt).  What you see on the screen is layered up until the final image is sent to the video out buffer.

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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