QObject signal/slot not working

[Msnforum]

I have a class A that inherits QWidget and class B that inherits QObject.

When a button is clicked, class A creates an object of Class B. Class B is supposed to perform a http request and emit a done signal to perform the slot function.

The problem is that class B can initialize properly but it cannot execute the slot function when the done signal is emitted. As far as I know, I don't see debug errors and my actual code is a bit too long.

Example:

class A : public QWidget
{
    Q_OBJECT
    public:
        A();
    private slots;
        void buttonClicked();
    private:
        QPushButton *button;
};

class A : public QWidget
{
    Q_OBJECT
    public:
        A();
    private slots;
        void buttonClicked();
    private:
        QPushButton *button;
};

To copy to clipboard, switch view to plain text mode 

class B : public QObject
{
     Q_OBJECT
     public:
         B();
     private slots;
         void performFunction();
};

class B : public QObject
{
     Q_OBJECT
     public:
         B();
     private slots;
         void performFunction();
};

To copy to clipboard, switch view to plain text mode 

A::A()
{
     ...
     connect(button,SIGNAL(clicked()),this,SLOT(buttonClicked()));
 
void A::buttonClicked()
{
   B objectB;
}

A::A()
{
     ...
     connect(button,SIGNAL(clicked()),this,SLOT(buttonClicked()));

void A::buttonClicked()
{
   B objectB;
}

To copy to clipboard, switch view to plain text mode 

B::B()
{
     ...
     connect(http,SIGNAL(done(bool)),this,SLOT(performFunction()));
}

B::B()
{
     ...
     connect(http,SIGNAL(done(bool)),this,SLOT(performFunction()));
}

To copy to clipboard, switch view to plain text mode 

Could anyone point out what I have done wrong.