Set current portName (QSerialPort)

[maratk1n]

Hi all!
The examples show code in Terminal project:

//in constructor
fillPortsInfo();
//..//
void Settings::fillPortsInfo()
{
    ui->serialPortInfoListBox->clear();
    foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
        QStringList list;
        list << info.portName()
             << info.description()
             << info.manufacturer()
             << info.systemLocation()
             << (info.vendorIdentifier() ? QString::number(info.vendorIdentifier(), 16) : QString())
             << (info.productIdentifier() ? QString::number(info.productIdentifier(), 16) : QString());
 
         ui->serialPortInfoListBox->addItem(list.first(), list);
        }
    }
}

//in constructor
fillPortsInfo();
//..//
void Settings::fillPortsInfo()
{
    ui->serialPortInfoListBox->clear();
    foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
        QStringList list;
        list << info.portName()
             << info.description()
             << info.manufacturer()
             << info.systemLocation()
             << (info.vendorIdentifier() ? QString::number(info.vendorIdentifier(), 16) : QString())
             << (info.productIdentifier() ? QString::number(info.productIdentifier(), 16) : QString());

         ui->serialPortInfoListBox->addItem(list.first(), list);
        }
    }
}

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How can I display the current port in the QComboBox (serialPortInfoListBox) that I take from the config.ini file?
Now I have the first (or last) port from the list of ports.

[Lesiok]

What is the object list needed for?

[high_flyer]

Did you mean something like this?

void Settings::fillPortsInfo()
{
    ui->serialPortInfoListBox->clear();
    QStringList list;
    foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
 
        list << info.portName();
    }
   ui->serialPortInfoListBox->addItems(list);
}

void Settings::fillPortsInfo()
{
    ui->serialPortInfoListBox->clear();
    QStringList list;
    foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {

        list << info.portName();
    }
   ui->serialPortInfoListBox->addItems(list);
}

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[maratk1n]

What is the object list needed for?

Did you mean something like this?

I have a list of ports:

void Settings::fillPortsInfo()
{
    ui->serialPortInfoListBox->clear();
    foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
        QStringList list;
        list << info.portName()
             << info.description()
             << info.manufacturer()
             << info.systemLocation()
             << (info.vendorIdentifier() ? QString::number(info.vendorIdentifier(), 16) : QString())
             << (info.productIdentifier() ? QString::number(info.productIdentifier(), 16) : QString());
        qDebug() << list;
        ui->serialPortInfoListBox->addItem(list.first(), list);
    }
}

void Settings::fillPortsInfo()
{
    ui->serialPortInfoListBox->clear();
    foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
        QStringList list;
        list << info.portName()
             << info.description()
             << info.manufacturer()
             << info.systemLocation()
             << (info.vendorIdentifier() ? QString::number(info.vendorIdentifier(), 16) : QString())
             << (info.productIdentifier() ? QString::number(info.productIdentifier(), 16) : QString());
        qDebug() << list;
        ui->serialPortInfoListBox->addItem(list.first(), list);
    }
}

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qDebug output:

("COM16", "HUAWEI Mobile Connect - 3G PC UI Interface", "HUAWEI Incorporated", "\\.\COM16", "12d1", "1003") 
("COM1", "MOXA Port 0", "Moxa Inc.", "\\.\COM1", "", "") 
("COM2", "MOXA Port 1", "Moxa Inc.", "\\.\COM2", "", "") 
("COM17", "HUAWEI Mobile Connect - 3G Modem", "HUAWEI Incorporated", "\\.\COM17", "12d1", "1003")

("COM16", "HUAWEI Mobile Connect - 3G PC UI Interface", "HUAWEI Incorporated", "\\.\COM16", "12d1", "1003") 
("COM1", "MOXA Port 0", "Moxa Inc.", "\\.\COM1", "", "") 
("COM2", "MOXA Port 1", "Moxa Inc.", "\\.\COM2", "", "") 
("COM17", "HUAWEI Mobile Connect - 3G Modem", "HUAWEI Incorporated", "\\.\COM17", "12d1", "1003")

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The application is configured to the COM2 (I take it from the config file).
The user opens the port settings window and sees it there:
image.jpg
I do not want the user to panic and think that another port is connected. Therefore, I initially want to set the current port.
But I can not think of how to do it.

[high_flyer]

If the comobo box is not editable, your can simply call setCurrentText() with the port name on it.
http://doc.qt.io/qt-5/qcombobox.html#currentText-prop

[maratk1n]

If the comobo box is not editable, your can simply call setCurrentText() with the port name on it.
http://doc.qt.io/qt-5/qcombobox.html#currentText-prop

Thank you! It solved my problem.

void Settings::fillPortsInfo()
{
    ui->serialPortInfoListBox->clear();
    foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
        QStringList list;
        list << info.portName()
             << info.description()
             << info.manufacturer()
             << info.systemLocation()
             << (info.vendorIdentifier() ? QString::number(info.vendorIdentifier(), 16) : QString())
             << (info.productIdentifier() ? QString::number(info.productIdentifier(), 16) : QString());
        //qDebug() << list;
        ui->serialPortInfoListBox->addItem(list.first(), list);
    }
    ui->serialPortInfoListBox->setCurrentText(Config::get().getValue("COM/name").toString());
}

void Settings::fillPortsInfo()
{
    ui->serialPortInfoListBox->clear();
    foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
        QStringList list;
        list << info.portName()
             << info.description()
             << info.manufacturer()
             << info.systemLocation()
             << (info.vendorIdentifier() ? QString::number(info.vendorIdentifier(), 16) : QString())
             << (info.productIdentifier() ? QString::number(info.productIdentifier(), 16) : QString());
        //qDebug() << list;
        ui->serialPortInfoListBox->addItem(list.first(), list);
    }
    ui->serialPortInfoListBox->setCurrentText(Config::get().getValue("COM/name").toString());
}

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