how to create click event dynamically???

[Radhika]

I have created Buttons dynamically.Now I want to create "click" event on them how can i do that ?

for(raw=1;raw<=20;raw++)
        {
             for(clm=1;clm<=5;clm++)
             {
                  QPushButton *pb = new QPushButton();
                  pb->setIcon(hdd_img);
                 grid->addWidget(pb,raw,clm,1,1);
 
                  connect(pb, SIGNAL(clicked()), s_map, SLOT(map()));
 
 
             }
        }

for(raw=1;raw<=20;raw++)
        {
             for(clm=1;clm<=5;clm++)
             {
                  QPushButton *pb = new QPushButton();
                  pb->setIcon(hdd_img);
                 grid->addWidget(pb,raw,clm,1,1);

                  connect(pb, SIGNAL(clicked()), s_map, SLOT(map()));


             }
        }

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I have tried this but it is not working
I want to show details of some object on that button click and want to access the ID of that button