QuickLook (Quick View) is an Apple Mac OS X system is a very convenient feature: Select a file, just press the SPACEBAR to view its contents, and then click the space to exit QuickLook, do not have to spend time to start/close any software. But QuickLook pop-up window text can only see not point, want to copy the words also have to double-click file with software Open. Here's how you can directly select and copy text in QuickLook (Quick View), TXT, PDF, Pages, Doc, and more.
Open Terminal (Cannot find the click on the Mac screen in the upper right corner of the magnifying glass search "terminal"), glue into the following line of command
Defaults write Com.apple.finder qlenabletextselection-bool true;killall Finder
Enter, then select a document QuickLook try it. Want to change back to the QuickLook can not select and copy the content of the state, the terminal may be stuck in the following line of command and then enter
Defaults Delete com.apple.finder Qlenabletextselection;killall finder