Calling QML functions from C++

[neda]

Thank you,
I have this code in "MySerialPort" class:

void MySerialPort::readData()
{
	QByteArray data = serial->readAll();
	if(data[0]=='0') // For example
		Show qml dialog
	if(data[1]=='1') // For example
	   disable GroupBox	
 
...
...
}

void MySerialPort::readData()
{
	QByteArray data = serial->readAll();
	if(data[0]=='0') // For example
		Show qml dialog
	if(data[1]=='1') // For example
	   disable GroupBox	

...
...
}

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How can I handled this code on the QML side?