[Mailchik]

AlexLAN, попробуйте:

Код:

[Setup]
AppName=My Application
AppVersion=1.5
DefaultDirName={pf}\My Application

[INI]
Filename: "{app}\Game.ini"; Section: "Nancy Data"; Key: "IDPath"; String: {code:Test};

[Code]
function Test(s : string):string;
 begin
  Result := copy(ExpandConstant('{app}'), 3, 100);
end;