bool invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue);
bool invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms = QVariantList());
bool invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms, QVariant &returnValue);
bool invokeSlot(QObject *receiver, int methodId, const QVariantList ¶ms = QVariantList());