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Qt: dbus method call fails

Hi! :)

I have a problem with a dbus method call using Qt.

The method I'm calling is this (it works in the terminal):

Code:

dbus-send --system --print-reply --dest=com.nokia.phone.net /com/nokia/phone/net Phone.Net.get_operator_name byte:0 uint32:10 uint32:222

method return sender=:1.20 -> dest=:1.4287 reply_serial=2

   string "vodafone IT"

   int32 0

When I try to call it from Qt I always get the error:

Code:

can't find method Phone.Net::get_operator_name

Here's my code

Code:

QDBusInterface device(QLatin1String("com.nokia.phone.net"),

                      QLatin1String("/com/nokia/phone/net"),

                      QLatin1String("Phone.Net"),

                      QDBusConnection::systemBus());

int opCode = 10;

int countryCode = 222;

QDBusMessage msg = device.call(QLatin1String("get_operator_name"), 0, opCode, countryCode);

I'm almost sure the device is correct (it works for calling get_registration_status) so what's the problem?

Many thanks. ;)

Re: Qt: dbus method call fails

It's an issue of wrong types. You're sending (I believe) three integers, when the method wants a byte and two quint32's. I would cast 0 to a uchar and make the other two quint32.

That error message is dodgy; I think it's a custom one sent by the CSD daemon

Re: Qt: dbus method call fails

Thanks for your reply. :)
I get the same error passing one uchar and two quint32 variables.

EDIT: From Qt documentation here:
http://doc.trolltech.org/latest/qdbustypesystem.html

uchar --> BYTE
uint --> UINT32

but also using uchar and two uint I get the same error...strange.

Re: Qt: dbus method call fails

This one works for me:

QDBusMessage msg = device.call(QLatin1String("get_operator_name"), QVariant::fromValue(uchar(0)), opCode, countryCode);

Re: Qt: dbus method call fails

Yes, it works using QVariant::fromValue(), many thanks. ;)