DBus newbie

[Thiago Macieira]

Em Segunda-feira 21 Setembro 2009, às 10:40:35, você escreveu:
> Hi, I am new to DBus technology and have a problem. A learn from
> http://doc.trolltech.com/qq/qq20-dbus.html Here is my code:
> 
> class Animal : public QObject
> {
> 	Q_OBJECT
> 
> 	public:
> 	Animal() { mood = 0; }
> 
> 	public slots:
> 	void feed(void) {
> 		++mood;
> 		emit moodChanged(mood);
> 		return;
> 	}
> 	void shoutAt(void) {
> 		--mood;
> 		emit moodChanged(mood);
> 		return;
> 	}
> 
> 	int currentMood() const { return mood; }
> 
> 	signals:
> 	void moodChanged(int mood);
> 
> 	private:
> 	int mood;
> };
> 
> main.cpp file:
> QDBusConnection bus = QDBusConnection::sessionBus();
> bus.interface()->registerService("Farm");
> 
> Animal cat;
> 
> bus.registerObject("/animals/Dax", &cat, QDBusConnection::ExportAllSlots);
> 
> But when I try to feed my cat:
> QDBusConnection::sessionBus().call(QDBusMessage::createMethodCall("Farm",
>  "/animals/Dax", "", "feed"));
> 
> I get this error message:
> process 18995: arguments to dbus_message_new_method_call() were incorrect,
>  assertion "destination == NULL || _dbus_check_is_valid_bus_name
>  (destination)" failed in file dbus-message.c line 1073. This is normally a
>  bug in some application using the D-Bus library. QDBusConnection: error:
>  could not send message to service "Farm" path "/animals/Dax" interface ""
>  member "feed"
> 
> What is wrong? Thanks for any answers.

Please upgrade Qt. This kind of crash has been fixed.

But the problem is that the destination service name of "Farm" is not valid.

It needs to have at least one dot in the name.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
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