How to use the connect

JuanNunez

Hello, I am having a problem with my proyect, the program it is simple, I want to recieve a QString from a thread and add it to the QListWidget, but doesnt work the connect function.

ERROR: no matching function for call to 'MainWindow::connect(hiloDelSocket*&, void (hiloDelSocket::)(QString), QListWidget&, <unresolved overloaded function type>)'

hilo = new hiloDelSocket(this);
connect(hilo, &hiloDelSocket::datos, ui->lista, &QListWidget::addItem);

//thread
void hiloDelSocket::run(){
    ZeroMemory(buffer,12);
    recv(sock,buffer,12,0);
    QString a = buffer;
    emit datos(a);
}

//header
class hiloDelSocket: public QThread
{
public:
    hiloDelSocket(QObject *parent = nullptr);

signals:
    void datos(const QString);

protected:
    void run() override;

private:
    char buffer[12];
    SOCKET sock;

};

jsulm

@JuanNunez There are two versions of addItem, you need to tell connect which to use.

Try:

connect(hilo, &hiloDelSocket::datos, ui->lista, QOverload<QString>::of(&QListWidget::addItem));

J.Hilk

@JuanNunez said in How to use the connect:

unresolved overloaded function type

addItem has multiple overloads and the connect cont resolve which one to use.

https://doc.qt.io/qt-5/qtglobal.html#qOverload

also don't use threads. I'm 90% sure you don't know what your doing, and don't need them in the first place