Hello, I'm using gstreamer0.10 with vala(0.20)
when setting a signal handler on a gstreamer bus my handler is never call

GstBus bus = pipe.get_bus();
bus.add_signal_watch();
bus.message.connect(func);

where func is as follows:

public void func(Gst.Bus bus, Message msg)
{
  //some codes here
}

I don't know how to solve this problem...

Thanks...