Gio.Settings::writable-changed

connect('writable-changed', function (settings, key: String, ): void);
  

The "writable-changed" signal is emitted when the writability of a key has potentially changed. You should call Gio.Settings.prototype.is_writable in order to determine the new status.

This signal supports detailed connections. You can connect to the detailed signal "writable-changed::x" in order to only receive callbacks when the writability of "x" changes.