DBusConnection.emitSignal

bool emitSignal(string destinationBusName,  string objectPath,  string interfaceName,  string signalName,  glib.variant.Variant parameters =  null)

Emits a signal.

If the parameters GVariant is floating, it is consumed.

This can only fail if parameters is not compatible with the D-Bus protocol (gio.types.IOErrorEnum.InvalidArgument), or if connection has been closed (gio.types.IOErrorEnum.Closed).

`destinationBusName`	the unique bus name for the destination for the signal or null to emit to all listeners
`objectPath`	path of remote object
`interfaceName`	D-Bus interface to emit a signal on
`signalName`	the name of the signal to emit
`parameters`	a #GVariant tuple with parameters for the signal or null if not passing parameters

true unless error is set