the unique bus name for the destination for the signal or %NULL to emit to all listeners
path of remote object
D-Bus interface to emit a signal on
the name of the signal to emit
a #GVariant tuple with parameters for the signal or %NULL if not passing parameters
%TRUE unless @error is set
GException on failure.
2.26
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.