Using a filter like QDir::Dirs|QDir::Hidden should only report hidden dirs. Instead hidden folders are listed, too.

Run the attached app on a dir structure like the following:

/tmp/trueg/1: directory
/tmp/trueg/1/2: directory
/tmp/trueg/1/2/5: directory
/tmp/trueg/1/2/.4: directory
/tmp/trueg/1/.4: directory
/tmp/trueg/1/.4/1: empty
/tmp/trueg/1/.h1: empty
/tmp/trueg/1/.h2: empty

and get this result:

/tmp/trueg/1/2
/tmp/trueg/1/2/5
/tmp/trueg/1/2/.4
/tmp/trueg/1/.4
/tmp/trueg/1/.h1
/tmp/trueg/1/.h2

As you can see .h1 and .h2 are listed, too, although they are files.