gwj / po_oopc · Files

#include "sigslots.h"
#include <iostream>
using namespace std;

void Counter::setValue(int value)
{
     if (value != m_value) {
         m_value = value;
         emit valueChanged(value);
     }
}

int main()
{

 Counter a, b;
 QObject::connect(&a, SIGNAL(valueChanged(int)),
                  &b, SLOT(setValue(int)));

 a.setValue(12);
 cout << "a="<<a.value()<<",b="<<b.value()<<endl;
 b.setValue(48);
 cout << "a="<<a.value()<<",b="<<b.value()<<endl;
}