Console app simple probleme

[ODБOï]

Hi,
I'm trying to instantiate a Q_Object derived object in my console application..

#include <QCoreApplication>
#include "sftpclient.h"

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    SftpClient client;
    client.sftp_createFile("testFile.txt","file content");
    return a.exec();
}

I instantiate an SftpClient witch is a Q_Object

class SftpClient : public QObject
{
    Q_OBJECT
public:
    explicit SftpClient(QObject *parent = nullptr);
signals:
    void sftp_createFile_error(QString err);
public slots:
  
    int sftp_deleteFile(QString f);
    void sftp_connect();
     };

#endif // SFTPCLIENT_H

//SftpClients constructor
SftpClient::SftpClient(QObject *parent) : QObject(parent)
{
    qDebug()<<"creating the client..."; // never executed
     sftp_connect();//
}

It looks like my SftpClients constructor is never called.. Can someone tell me why ?

[VRonin]

This is all correct, try re-building your project

[ODБOï]

@VRonin hi,
I did. But nothing changes. I read this article : http://treyweaver.blogspot.fr/2013/02/qt-console-application-template-tutorial.html and tested the exemple but this is still not working..

[aha_1980]

@LeLev use a debugger, place a breakpoint in the ctor.

we had several people that had qDebug output problems.

[JonB]

@LeLev
Try one of the following:

• Your constructor should be called for line SftpClient client;. Just in case that is happening real early and there is a problem with qDebug(), try placing a breakpoint in the constructor.

• Try SftpClient *client = new SftpClient();. It should make no difference, but again just in case...

[Morix Dev]

@LeLev : I've just tried just copy/pasting your code into a blank console application in my QtCreator and everything works perfectly fine!

The constructor is getting called, as expected.

Are you sure that you have qmake-ed and rebuilt the project? Maybe you can try to completely delete your build folder and rebuild everything from scratch (maybe some temporary or moc/obj files causing problems)?

[Buckwheat]

Hi @LeLev ,

I am unsure what your end goal is here. There is a lot missing from your code for us to check what could be wrong. What signals are you monitoring? What does sftp_connect actually do?

Have a look at QNetworkAccessManager http://doc.qt.io/qt-5/qnetworkaccessmanager.html for complete information. Sure beats writing your own ;D

[ODБOï]

Thx all for help.
@Buckwheat nothing special, i just wanted to create a simple console app and instatiate a Qobject derived object in my main, The only thing should be executed is 'qDebug()<<"creating the client..."

@Buckwheat said in Console app simple probleme:

What does sftp_connect actually do?

Nothing ! because never called

I just Re-created the project to ~solve this...

Thx