connect(ClientProxy::instance(), SIGNAL(recvPartialItem(quint32, quint32)), this, SLOT(updateProgressBar(quint32, quint32)));
connect(ClientProxy::instance(), SIGNAL(csCoreState(QVariant)), this, SLOT(recvCoreState(QVariant)));
ui.progressBar->show();
connect(ClientProxy::instance(), SIGNAL(recvPartialItem(quint32, quint32)), this, SLOT(updateProgressBar(quint32, quint32)));
connect(ClientProxy::instance(), SIGNAL(csCoreState(QVariant)), this, SLOT(recvCoreState(QVariant)));
ui.progressBar->show();