Gio.DBusConnection.prototype.signal_subscribe

function signal_subscribe(sender: String, interface_name: String, member: String, object_path: String, arg0: String, flags: Gio.DBusSignalFlags, callback: Gio.DBusSignalCallback): Number(guint) {
    // Gjs wrapper for g_dbus_connection_signal_subscribe()
}
  

Subscribes to signals on connection and invokes callback with a whenever the signal is received. Note that callback will be invoked in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from.

If connection is not a message bus connection, sender must be null.

If sender is a well-known name note that callback is invoked with the unique name for the owner of sender, not the well-known name as one would expect. This is because the message bus rewrites the name. As such, to avoid certain race conditions, users should be tracking the name owner of the well-known name and use that when processing the received signal.

If one of Gio.DBusSignalFlags.match_arg0_namespace or Gio.DBusSignalFlags.match_arg0_path are given, arg0 is interpreted as part of a namespace or path. The first argument of a signal is matched against that part as specified by D-Bus.

Since 2.26