I wanted to format all my source code in my project according to my configured formatting settings (because other developers will be working on the same 
sources, so I wanted to provide a codestyle we can all apply before checking in, so I want to apply a baseline formatting to all files).

I couldn't find a way to do it - I had to go and open each and every file in the project and hit ctrl-shift-f.  It would be nice if I could select a set of files in the 
project explorer and go to Source > Format, or perhaps have a format option in the context menu for packages - but the Format action was disabled in all 
these scenarios.