Hello,

My application is composed of an "Icone" (Personal class that setup a QSystemTrayIcon with a QMenu).

This Icone creates a "Veilleur" object (Personal class that simulate a service in order to administrate a client side connection to a server).

So the "Veilleur" creates a "MailChecker" (Personal class that checks for new mails on a server).

At the end, the "MailChecker" use a QTcpSocket to connect to the server.

The problem is that today I need to developp the "Veilleur" class, and a strange thing as appeared : I can't add anything !
For example, if I want to add a QAction (private or public) the application will fall down.
The application as no problem to pass the builder : no errors, no warning... Nothing.
But when I launch it, I get a Windows error box saying me that the application as encoutered an error and must be closed...

I can't understand the problem, so I put here my code... As reduced as possible .

main.cpp
Qt Code: 
  1. #include <QApplication>
  2. #include <QtGui>
  3.  
  4. #include "Icone.h"
  5.  
  6. int main(int argc, char *argv[])
  7. {
  8.     QApplication app(argc, argv);  
  9. 			Icone mon_icone;
  10.     return app.exec();
  11. }
To copy to clipboard, switch view to plain text mode 




Icone.h
Qt Code: 
  1. #ifndef ICONE_H
  2. #define ICONE_H
  3.  
  4.  #include "Veilleur.h"
  5.  
  6.  #include <iostream>
  7.  #include <QSystemTrayIcon>
  8.  #include <QWidget>
  9.  
  10.  class QAction;
  11.  class QMenu;
  12.  
  13.  class Icone : public QWidget
  14.  {
  15.      Q_OBJECT
  16.  
  17.  public:
  18.      Icone();
  19.  
  20.  protected:
  21.      [...]
  22.  
  23.  private slots:
  24.      [...]
  25.  
  26.  private:
  27.      // QActions and QMenus
  28.      // [...]
  29.  
  30.      QSystemTrayIcon *trayIcon;
  31.  
  32.      Veilleur mon_veilleur;
  33.  };
  34.  
  35. #endif
To copy to clipboard, switch view to plain text mode 




Icone.cpp
Qt Code: 
  1. #include <QtGui>
  2.  
  3. 	 #include "Icone.h"
  4.  
  5. 	 Icone::Icone()
  6. 	 {
  7. 	     Creer_actions();  // Initialise the QActions
  8. 	     Creer_menu(); // Initialise the QMenus
  9. 	     Creer_TrayIcon(); // Initialise the trayicon and bind it the QMenus
  10. 	 }
To copy to clipboard, switch view to plain text mode 




Veilleur.h
Qt Code: 
  1. #ifndef Veilleur_h
  2. #define Veilleur_h
  3.  
  4. #include "MailChecker.h"
  5.  
  6. #include <QTextStream>
  7. #include <QObject>
  8. #include <QTimer>
  9.  
  10.  // Added in order to try to add a QAction
  11.  #include <iostream>
  12.  #include <QWidget> 
  13.  class QAction;
  14.  class QMenu;
  15.  
  16. class Veilleur : public QObject
  17. {
  18. 	Q_OBJECT	
  19.  
  20. public:
  21.     Veilleur();
  22. 	[...]
  23.  
  24. private slots:
  25. 	[...]
  26.  
  27. private:
  28. 	MailChecker mChecker; 
  29. 	//MailChecker mCheckersecond;  // Crash the application if uncommented
  30. 	//QAction *Act_Tic; // Crash the application if uncommented
  31. 	//QAction *Act_Ticlol; // Crash the application if uncommented
  32. };
  33. #endif
To copy to clipboard, switch view to plain text mode 





Veilleur.cpp
Qt Code: 
  1. #include <iostream>
  2. #include <QApplication>
  3.  
  4. #include "Veilleur.h"
  5.  
  6. Veilleur::Veilleur() : QObject()
  7. {	
  8. }
To copy to clipboard, switch view to plain text mode 




MailChecker.h
Qt Code: 
  1. #ifndef MailChecker_h
  2. #define MailChecker_h
  3.  
  4. #include <QThread>
  5. #include <QTextStream>
  6. #include <QSettings>
  7. #include <QObject>
  8. #include <QTcpSocket>
  9.  
  10. class QTcpSocket;
  11.  
  12. class MailChecker : public QObject
  13. {
  14. 	Q_OBJECT	
  15.  
  16. public:
  17.     MailChecker();
  18.     [...]
  19.  
  20. private slots:
  21.     void afficher_erreur_socket(QAbstractSocket::SocketError socketError);
  22.  
  23. private:
  24.     [...]
  25.  
  26.     QTcpSocket *socket_r;
  27. };
  28.  
  29. #endif
To copy to clipboard, switch view to plain text mode 




MailChecker.cpp
Qt Code: 
  1. #include <iostream>
  2.  
  3. #include <QApplication>
  4. #include <QHostAddress>
  5. #include <QTcpSocket>
  6. #include <QStringList>
  7.  
  8. #include "MailChecker.h"
  9.  
  10.  
  11. MailChecker::MailChecker() : QObject()
  12. {	
  13. 	connect(socket_r, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(afficher_erreur_socket(QAbstractSocket::SocketError)));
  14. }
  15.  
  16. void MailChecker::afficher_erreur_socket(QAbstractSocket::SocketError socketError)
  17. {	
  18.       switch (socketError) 
  19.       {
  20.         case QAbstractSocket::RemoteHostClosedError:
  21.             break;
  22.         case QAbstractSocket::HostNotFoundError:
  23.             std::cout << "\n ERREUR SOCKET : Host not found" << std::endl;
  24.             break;
  25.         case QAbstractSocket::ConnectionRefusedError:
  26.             std::cout << "\n ERREUR SOCKET : Connection refused by peer" << std::endl;
  27.             break;
  28.         default:
  29.             std::cout << "\n ERREUR SOCKET : \n" << socket_r->errorString().toStdString() << std::endl;
  30.         }
  31. }
To copy to clipboard, switch view to plain text mode 



I'm sure I made my nOOb another time... But I'm a nOOb .
I can't understand what's the problem,
I can't understand why the application crashes if I add an object,
I can't understand why the application has been compile and built but crashes...

I think it's a class initialisation problem, but I can't see what.

Perhaps coul you help me ?
Thanks