[KaktoR]

Try this

Create language.txt and include ("compiler: Default.isl" delete the space, have spaced it because of smiley )

Name: "english"; MessagesFile: "compiler: Default.isl"
Name: "spanish"; MessagesFile: "compiler:Languages\Spanish.isl"
Name: "french"; MessagesFile: "compiler:Languages\French.isl"
Name: "german"; MessagesFile: "compiler:Languages\German.isl"

#define LanguageFile ".\languages.txt"
#define LanguageName

[INI]
Filename: "{app}\ALI213"; Section: "Settings"; Key: "Language"; String: "{code:GetLanguageName}"; 

[C ode]
 var
  LanguageNames: TStringList;

Have not tested but it should work