func (v *FileChooser) SetPreviewWidgetActive(active bool) {
	C.gtk_file_chooser_set_preview_widget_active(v.native(), gbool(active))
}
func (v *FileChooser) SetPreviewWidgetActive(active bool) {
	C.gtk_file_chooser_set_preview_widget_active(v.native(), gbool(active))
}
// SetPreviewWidgetActive is a wrapper around gtk_file_chooser_set_preview_widget_active().