def __setup_treeview_download(self): self.treeview_download = DownloadsTreeView() self.treeview_download.connect('row-activated', self.on_treeview_download_row_activated) self.treeview_download.show() self.builder.get_object('scrolledwindow_download').add(self.treeview_download) treeselection = self.treeview_download.get_selection() treeselection.set_mode(gtk.SELECTION_MULTIPLE)