Possible to give Finder back focus after opening and closing file (e.g. in editor)? When you open a file with finder (by pressing cmd-o) and subsequently close the file in whatever application opened it (e.g. TextEdit for a .txt file) by pressing for example cmd-w, the application still has the focus. 

Is it possible to always have the Finder get the focus back (like on Windows)?
I don't know of any way to get OS X to behave like Windows in this case, but if the document you open is the only window open in that application, you can quit the app with Cmd+Q instead of just closing the window. If you need to keep the app open after closing the window, you can press Cmd+Tab to quickly return to the Finder once you close the window.