I was walking one of my people through altering a theme. Setting the background image presents a file dialog but no preview so they have no way to see if it is the background they want. (short of previewing in a separate app or file manager)<br><br>I'm guessing it might have to do with qt using the native file dialog so this might work for others, but we use Ubuntu 16.04 and Unity desktop, so maybe it is a Gnome3 native dialog issue?<br><br>Can this be implemented with QFileDialog::setItemDelegate() to either thumbnail in the file list or render a thumbnail of to the side on select?<br>