[Qt3 file permissions] is it possible to set a file to read only?

I've been searching around the web, this forum and asked collegaes, but it just doesn't seem possible: is it possible to change the permissions/attributes of a file. My goal is to just simply set the read only flag of a file to true after I created it.

You could choose a platform dependent solution and add implement it between ifdefs, for each needed platform... shouldn't be that much code to write.