This is a plugin that Sh4DoVV developed is for preventing of injecting of DLL files into protected process. This technique (dll injection) is used by game cheaters to cheat the online MMORPG games.
Sh4DoVV, as far as I understand, posted this protected example just for people who are interesting of this plugin and who want to use it.
ANTI DLL INJECTION is DONE - it is commercial plugin and requires payment! I think it is very useful for game developers! If somebody are interesting in this plugin, please contact to Sh4DoVV in this thread or using PM!
The dpr file is a project file for Delphi that you should modify to satisfy your needs, then using compiler compile it to dll and use this dll in plugins.