QDBusPendingReplyIn this example, we are making a D-Bus call to a method called "getTemperature". If the call fails or is asynchronous, a QDBusPendingReply error object will be returned. We can use the "isError" method to check if an error object has been returned. If it has, we can use the "error" method to get more information about the error. The QDBusPendingReply error object is part of the QtDBus module, which is a part of the Qt library.reply = dbusInterface->call("getTemperature"); reply.waitForFinished(); if (reply.isError()) { qDebug() << "Error:" << reply.error().message(); } else { int temperature = reply.value(); qDebug() << "Temperature:" << temperature; }