c++ - How to bind QMessageBox button to action -


i created qmessagebox save, discard , cancel button:

qmessagebox msgbox; msgbox.settext("the document has been modified."); msgbox.setinformativetext("do want save changes?"); msgbox.setstandardbuttons(qmessagebox::save | qmessagebox::discard | qmessagebox::cancel); msgbox.setdefaultbutton(qmessagebox::save); msgbox.seticon(qmessagebox::question);

now, how can bind each of these buttons specific command?

 qmessagebox msgbox;  msgbox.settext("the document has been modified.");  msgbox.setinformativetext("do want save changes?");  msgbox.setstandardbuttons(qmessagebox::save | qmessagebox::discard | qmessagebox::cancel);  msgbox.setdefaultbutton(qmessagebox::save);  int ret = msgbox.exec();   switch (ret) {    case qmessagebox::save:        // save clicked        break;    case qmessagebox::discard:        // don't save clicked        break;    case qmessagebox::cancel:        // cancel clicked        break;    default:        // should never reached        break;  }

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