How to use static slot function in Qt?

Question

I've this code snippet:

class Server{
public slot:
    static void readMessage();
};

// somewhere in the main code...
connect(tcpsocket, &QTcpSocket::readyRead, Server::readMessage);

error: no matching function for call to 'QObject::connect(const Object*&, void (QIODevice::&)(), const Object&, void (Server::*&)(), Qt::ConnectionType)' return connect(sender, signal, sender, slot, Qt::DirectConnection);

I don't know how to deal with that.

Maybe this could help : https://stackoverflow.com/a/9428213/6165833 — ymoreau, Jan 09 '18 at 08:59
You can do this in Qt5 only. Which version of Qt do you use? — vahancho, Jan 09 '18 at 09:03
This syntax works: QObject::connect(tcpsocket, &QTcpSocket::readyRead, &Server::readMessage); — Mohammad Kanan, Jan 09 '18 at 21:30

PRIME · Answer 1 · 2018-04-17T04:29:37.337

0

Try this:

connect( tcpsocket, &QTcpSocket::readyRead, [](){ Server::readMessage(); });

Note: This will need C++11 compiler features.

edited Apr 17 '18 at 04:29

answered Jan 09 '18 at 09:29

PRIME

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2

It is NOT necessary to use lamndas, you can do it directly: `QObject::connect(tcpsocket, &QTcpSocket::readyRead, &Server::readMessage); ` – eyllanesc Apr 17 '18 at 04:36
@eyllanesc: Indeed, I was just giving another way to write it. – PRIME Apr 17 '18 at 04:42
@eyllanesc: I Agree. – PRIME Apr 17 '18 at 04:53

How to use static slot function in Qt?

1 Answers1