Problem connection Signal and slot

[tamnv110]

I have a class KiemTraKetNoi

class KiemTraKetNoi : public QObject
{
 
public:
    KiemTraKetNoi();
    QString KTTruyenDuLieu(QString &str);
    bool myCheckConnect();
    void TestTime();
public slots:
    void kiemTraTimeOut();
private:
    QTimer *timer;
    QNetworkAccessManager manager;
    QNetworkReply *reply;
};

class KiemTraKetNoi : public QObject
{

public:
    KiemTraKetNoi();
    QString KTTruyenDuLieu(QString &str);
    bool myCheckConnect();
    void TestTime();
public slots:
    void kiemTraTimeOut();
private:
    QTimer *timer;
    QNetworkAccessManager manager;
    QNetworkReply *reply;
};

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in KiemTraKetNoi:

QString KiemTraKetNoi::KTTruyenDuLieu(QString &str)
{
    //QNetworkAccessManager manager;
    reply=manager.get(QNetworkRequest(QUrl(str)));
    QEventLoop evLoop;
    QObject::connect(reply,SIGNAL(readyRead()),&evLoop,SLOT(quit()));
    QObject::connect(reply,SIGNAL(error(QNetworkReply::NetworkError)),&evLoop,SLOT(quit()));
 
    QObject::connect(timer,SIGNAL(timeout()),this,SLOT(kiemTraTimeOut()));
 
    if(!timer->isActive())
        timer->start();
 
    evLoop.exec();
....
}

QString KiemTraKetNoi::KTTruyenDuLieu(QString &str)
{
    //QNetworkAccessManager manager;
    reply=manager.get(QNetworkRequest(QUrl(str)));
    QEventLoop evLoop;
    QObject::connect(reply,SIGNAL(readyRead()),&evLoop,SLOT(quit()));
    QObject::connect(reply,SIGNAL(error(QNetworkReply::NetworkError)),&evLoop,SLOT(quit()));

    QObject::connect(timer,SIGNAL(timeout()),this,SLOT(kiemTraTimeOut()));

    if(!timer->isActive())
        timer->start();

    evLoop.exec();
....
}

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and timer = new QTimer(this);

void KiemTraKetNoi::kiemTraTimeOut()
{
    timer->stop();
    reply->abort();
}

void KiemTraKetNoi::kiemTraTimeOut()
{
    timer->stop();
    reply->abort();
}

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When my app running in main.cpp , it show message:
Object::connect: No such slot QObject::kiemTraTimeOut() in ..\TuDienVanHoa\kiemtraketnoi.cpp:23

I don't understand it. Help me!

[cincirin]

You should write Q_OBJECT macro in "KiemTraKetNoi" class.

[tamnv110]

Thank cincirin!
I resolved my error.