local fn DoIt
  CFURLRef desktopURL = fn FileManagerURLForDirectory( NSDesktopDirectory, NSUserDomainMask )
  CFURLRef        url = fn URLByAppendingPathComponent( desktopURL, @"test_file.txt" )
  CFDictionaryRef attributes = fn FileManagerAttributesOfItemAtURL( url )
  printf @"%@", fn DictionaryObjectForKey( attributes, NSFileSize )
end fn

fn DoIt

HandleEvents