changed

Emitted when a key has potentially changed.

You should call one of the [method@Gio.Settings.get] calls to check the new value.

This signal supports detailed connections. You can connect to the detailed signal `changed:GSettings:x` in order to only receive callbacks when key `x` changes.

Note that settings only emits this signal if you have read key at least once while a signal handler was already connected for key.

Parameters:

key	the name of the key that changed