Qt5 serial terminal porting4

if you want to skip this part and jump to another part

Part 1 MainWindow
Part 2 readyRead signal
Part 3 openSerialPort

Part 5 writeData
Part 6 readData

4.) closeSerialPort

Clicking on the Disconnect button invokes the closeSerialPort() slot:

void MainWindow::closeSerialPort()
{
    if (m_serial->isOpen())
        m_serial->close();
    m_console->setEnabled(false);
    m_ui->actionConnect->setEnabled(true);
    m_ui->actionDisconnect->setEnabled(false);
    m_ui->actionConfigure->setEnabled(true);
    showStatusMessage(tr("Disconnected"));
}

In this case, handled by the closure of the serial port.

Remember we are NOT using m_ui UI:: code
we are using a MainWindow and all code is inside this MainWindow
textEdit-> is now our m_console->
and I rewrote the code to use statusBar->

'------------------------------------------------ 
SUB closeSerialPort_cb() 
'------------------------------------------------ 
    '#5 
    'Clicking on the Disconnect button 
    'invokes the closeSerialPort
    IF (m_serial->isOpen()) THEN 
        m_serial->close() 
    END IF 
    textEdit->setEnabled(false) 
    actionConnect->setEnabled(true) 
    actionDisconnect->setEnabled(false) 
    actionConfigure->setEnabled(true) 
    statusBar->showMessage("Disconnected")
END SUB