How to function Pointers in the QT slot?-CodePudding

Now I write a serial class, in the hope that in the constructor introduced from outside a function, then readyRead signal and the function of the serial port connected, excuse me how should do to achieve this goal? Here is the part of the code I wrote, but complains, it is for god to solve!

 
The class SerialPort 
{
Public: 
SerialPort (void *) pf ()); 
Void FFF (*) (void); 
QSerialPort * m_Port; 
} 

SerialPort: : SerialPort (void *) pf ()) 
{
FFF=pf; 
QObject: : connect (this - & gt; M_Port, & amp; QIODevice: : readyRead, this, FFF); 
}