[maemo-developers] help with listening to DBUS signals (it relates to Cell Broadcast SMS)

[From: Nicolas Chuche]

> Can someone point me to an example out there (using either lowlevel or glib
> binding) and some info on how I would listen to this signal?

One quick exemple : I want to listen for this signal :

signal sender=:1.20 -> dest=(null destination) serial=1385
path=/com/nokia/phone/net; interface=Phone.Net;
member=registration_status_change
   byte 4
   uint16 1024
   uint32 13053
   uint32 1
   uint32 208
   byte 0
   byte 7

And I use something like that (it's in a pyqt app so you will have to
adapt it to suit your needs) :

------------------------
import sys
from PyQt4.Qt import QApplication

import dbus.mainloop.qt

def cell_signal_handler(*args):
    print "%s,%s" % (args[3], args[2])
    app.quit()

app = QApplication(sys.argv)

dbus.mainloop.qt.DBusQtMainLoop(set_as_default=True)

bus = dbus.SystemBus()
bus.add_signal_receiver(cell_signal_handler,
dbus_interface="Phone.net", signal_name="registration_status_change")

app.exec_()
------------------------

com.nokia.phone.SMS is on the session bus so you will need something like that :

# signal sender=:1.19 -> dest=(null destination) serial=550
path=/com/nokia/phone/SMS; interface=Phone.SMS; member=IncomingCBS
bus = dbus.SessionBus()
bus.add_signal_receiver(cell_signal_handler,
dbus_interface="Phone.SMS", signal_name="IncomingCBS")

Sorry, I'm late, I've got not enough time to explain more.