这是我第一次使用 DBus,所以我不完全确定我是否以正确的方式进行。我正在尝试连接 Ubuntu One DBus 服务并获取我的应用程序的登录凭据,但是我连接到 DBus 返回信号的插槽似乎从未触发,尽管在连接期间返回了肯定结果。
在我开始查找与此特定服务相关的详细信息中的错误之前,有人可以告诉我此代码是否可以首先工作,或者我在这里做错了什么?
int main()
{
UbuntuOneDBus *u1Dbus = new UbuntuOneDBus;
u1Dbus->init();
}
class UbuntuOneDBus : public QObject
{
Q_OBJECT
QString busName;
QString path;
QString interface;
QString method;
QString signature;
void connectReturnSignals();
private slots:
void credentialsFound();
void credentialsNotFound();
void credentialsError();
public:
UbuntuOneDBus();
void init();
};
UbuntuOneDBus::UbuntuOneDBus()
{
busName = "com.ubuntuone.Credentials";
path = "/credentials";
interface = "com.ubuntuone.CredentialsManagement";
method = "register";
signature = "a{ss}";
connectReturnSignals();
}
void UbuntuOneDBus::init()
{
QDBusMessage message = QDBusMessage::createMethodCall( busName, path, interface, method );
QDBusConnection::sessionBus().send( message );
}
void UbuntuOneDBus::connectReturnSignals()
{
QDBusConnection::sessionBus().connect( busName, path, interface, "CredentialsFound", this, SLOT( credentialsFound() ) );
QDBusConnection::sessionBus().connect( busName, path, interface, "CredentialsNotFound", this, SLOT( credentialsNotFound() ) );
QDBusConnection::sessionBus().connect( busName, path, interface, "CredentialsError", this, SLOT( credentialsError() ) );
}
void UbuntuOneDBus::credentialsFound()
{
qDebug() << "Credentials found";
}
void UbuntuOneDBus::credentialsNotFound()
{
std::cout << "Credentials not found" << std::endl;
}
void UbuntuOneDBus::credentialsError()
{
std::cout << "Credentials error" << std::endl;
}