If you are programming on win32,now,DFL can be used by D2.065. Please git clone http://github.com/FrankLike/dfl Open the folder w32 ->dflexe double click the 'makedflexe.bat' file,after some seconds ,press the 'Enter key' ,after some seconds,dfl.lib,dfl.exe are all in you d install folders('lib' and 'bin') ,that's all ok.
Thanks Christopher E. Miller.