How to check if a folder is writable using Qt

Question

I am trying to check if a folder is writable so I can prompt an error dialog. I am trying this:

QFileDevice::Permissions permissions_list = QFile( folderName ).permissions();

    if ( permissions_list && QFileDevice::WriteUser )
    {
    }

but it does not work. It's the same for both writable folders and restricted ones.

Answer 1

use QFileInfo:

QFileInfo my_dir(folderName);

if(my_dir.isDir() && my_dir.isWritable()){
    // Do something
}

but pay attention to this problem if you're on Windows