QFileSystemModel Unicode support

In our project, we are using the QFileSystemModel to show images in a QListView. The QFileSystemModel is extended with a custom QFileIconProvider for compressing smaller/low res JPG icons. This is working fine for non-Unicode file names.

Now we are adding support for Unicode, but the model seems to filter out the Unicode characters. For example: i have a file called "Image箇32". A call to the icon provider reveals a file name "Image32" .. the 箇 is simply gone. This results in incorrect behaviour.

The same happens with QFileSystemModel::filePath(modelIndex), this also returns the incorrect string.