How does the Windows7 Quick Preview bar work?

Q: How does the Windows7 Quick Preview bar work?

A: In the XP era, when we select an image file, we can see a preview of the picture on the left side of the file manager. In the Vista era, Microsoft ported this functionality to the right-hand side of the file Manager, a separate sidebar, and only a preview of the image, extended to preview the document and video, and so on. But under the Windows7, we can't find the preview feature!

Don't worry! This function is not lost! Only the default Windows7 does not open it. We can easily turn it on and off with a button. In the File Manager search box below, there is an icon, we click to see, is not the preview bar out?!

Not only that, we can also use shortcut keys to open and close the preview, the specific shortcut is alt+p, there are Windows7 friends can try to do their own hands.