To make a screen capture in Mac OS X, we use either
- Command + Shift 3 (Full screen), or
- Command + Shift 4 (User selection)
The #2 is good but it wouldn’t allow us to select a specific window. To printscreen a specific window in Mac, try this following.
Command + Shift 4, then hit Space
The mouse cursor will turn into a fairly large camera icon and all you have to do is click on the windows (even the inactive windows behind) and Mac will handle the rest. Captured image will be saved on your desktop.