Sets whether the preview widget set by gtk.file_chooser.FileChooser.setPreviewWidget should be shown for the current filename. When active is set to false, the file chooser may display an internally generated preview of the current file or it may display no preview at all. See gtk.file_chooser.FileChooser.setPreviewWidget for more details.
whether to display the user-specified preview widget
Sets whether the preview widget set by gtk.file_chooser.FileChooser.setPreviewWidget should be shown for the current filename. When active is set to false, the file chooser may display an internally generated preview of the current file or it may display no preview at all. See gtk.file_chooser.FileChooser.setPreviewWidget for more details.