QtWebGl: use FileDialog to access files on client

[Rainer Koltermann]

Hello,
if using the qml FileDialog class with webgl in a browser you only have access to files from the host machine, not to files from the remote client where the browser is running.
How can I archive this?
Maybe I have to write a separate part in the application to handle these remote network access or do I have to use javascript or html5?
I'm using Qt 5.11.1.
Thanks!