[SOLVED] SIGNALs and SLOTs in console mode

[vcsala]

I am working on a small application which should run in console mode but uses QNetworkAccessManager. The main.cpp looks like this:

@#include <QtCore/QCoreApplication>
#include <QStringList>
#include <QTimer>

#include "clientlogin.h"

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

if (QCoreApplication::arguments().count() < 2)
{
    qDebug() << "Usage: enforceCaptcha <email address>";
    exit(1);

}
else
{
    qDebug() << "Called with" << QCoreApplication::arguments().at(1);
    ClientLogin cl(0, QCoreApplication::arguments().at(1));
    QTimer::singleShot(0, &cl, SLOT(loginLoop()));
}

a.exec&#40;&#41;;

}
@

and my pro file:

@#-------------------------------------------------

Project created by QtCreator 2010-12-16T20:11:33

#-------------------------------------------------

QT += core network
QT -= gui

TARGET = enforceCaptcha
CONFIG += console
CONFIG -= app_bundle

TEMPLATE = app

SOURCES += main.cpp
clientlogin.cpp

HEADERS +=
clientlogin.h
@

ClientLogin class is inherited from QObject.

The issue is that when I start the application (with an email address) it prints out the debug message then nothing happens. I know it is a noob question, but is the signal-slot mechanism works in console mode? Or what else can be the issue?

[vcsala]

Some more additional info: in earlier version I left out a.exec() and called cl.loginLoop() directly. That way the first request was sent but no slot (nor the sslErrorHanlder nor the handleNetworkData) was called.

[giesbert]

Hi,
it could not work, as your object is located on the stack:

@
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

if (QCoreApplication::arguments().count() < 2)
{
    qDebug() << "Usage: enforceCaptcha <email address>";
    exit(1);

}
else
{
    qDebug() << "Called with" << QCoreApplication::arguments().at(1);
    ClientLogin cl(0, QCoreApplication::arguments().at(1));
    QTimer::singleShot(0, &cl, SLOT(loginLoop()));
    // --&gt; here the cl object is destroyed.
}

a.exec&#40;&#41;;

}@

Move the event loop and the cl object in one scope, cl to outside or event loop to insite:

@
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);

if (QCoreApplication::arguments().count() < 2)
{
    qDebug() << "Usage: enforceCaptcha <email address>";
    exit(1);

}
else
{
    ClientLogin cl(0, QCoreApplication::arguments().at(1));
    qDebug() << "Called with" << QCoreApplication::arguments().at(1);
    QTimer::singleShot(0, &cl, SLOT(loginLoop()));
    a.exec&#40;&#41;;
}

}@

[vcsala]

Thanks, this was the solution (and it was really a noob question :))

I beleive as I reedited the code several times to solve the issue I just forgot to check if it is still correct from C++ point of view.