Method errorMessage

qucs-activefilter/qucsactivefilter.cpp:578–586

}

void QucsActiveFilter::errorMessage(QString str)
{
    statusBar()->showMessage(tr("Error!"));
    QMessageBox* msg =  new QMessageBox(QMessageBox::Critical,tr("Active filter design"),
                                        str,
                                        QMessageBox::Ok);
    msg->exec();
    delete msg;
}

void QucsActiveFilter::fixSize()
{