Problem with signal/slot carrying pointer - qt

See more:

C++

QT

I`m facing an error while connecting a signal to a slot in my project, it is:

<pre>error: no matching function for call to ‘QObject::connect(A&, const char [12], Handler&, const char [12])

My Project is quite big, and I can`t post the whole code here, but what I have done is:

I have class A, which dynamically allocates an instance of class B when a method is called, and emits a signal which carries the instance of B.

In another class named handler, I have a slot which recives an object of type B.

And in the main function, I connect them like this:

connect(a, SIGNAL(changed(B*)), handler, SLOT(process(B*)));

I have made a similar small program which produces this error, would be glad if you took a look: here

Thanks in advance.

What I have tried:

#include <QObject>
#include <QDebug>
#include <QCoreApplication>


class A : public QObject
{
    Q_OBJECT
public:
    void set(int v)
    {
        b = new B(v);
        emit wasSet(b);
    }
    
signals:
    void wasSet(B *b);
    
private:
    B *b;
};

class B
{
public:
    B(int v)
    {
        qDebug() << v;
        qDebug() << "Initialized.";
    }
};

class Handler : public QObject
{
    Q_OBJECT
public slots:
    void handle(B *b)
    {
        qDebug() << "Object handled.";
    }
};

int main(int argc, char* argv[])
{
    QCoreApplication app(argc, argv);
    A a;
    Handler h;
    QObject::connect(a, SIGNAL(wasSet(B*)), h, SLOT(handle(B*)));
    a.set(12);
    return app.exec();
}