How to get path to the current InnoSetup script file?

Question

How to get path, where the InnoSetup script file you are currently compiling is located ?

Answer 1

To get script source path, use the preprocessor's predefined variable SourcePath. That variable you can expand in your script as an ordinary define. In case, the script was not yet been saved, it returns path to My Documents directory. Here's just a useless example to test:

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

[Code]
procedure InitializeWizard;
begin
  MsgBox(ExpandConstant('{#SourcePath}'), mbInformation, MB_OK);  
end;

Don't forget that you have to compile the script (CTRL + F9) not only run (F9) to invoke preprocessor to rebuild the script.