Gets whether the preview widget set by gtk.file_chooser.FileChooser.setPreviewWidget should be shown for the current filename. See gtk.file_chooser.FileChooser.setPreviewWidgetActive.
true if the preview widget is active for the current filename.
Gets whether the preview widget set by gtk.file_chooser.FileChooser.setPreviewWidget should be shown for the current filename. See gtk.file_chooser.FileChooser.setPreviewWidgetActive.