Qt 4.8 signalMapper信号和插槽

Question

我一直在尝试将QSignalMapper与Qt 4.8一起使用。但我无法从信号映射器获取信号。我的代码与qt在其网站上的代码类似。我的mySlot函数应该接收值并执行，但点击按钮没有任何反应。

vector<QPushButton *> button;
QSignalMapper *signalMapper;
signalMapper = new QSignalMapper(this);
for (int i = 0; i<10; i++)
{ 
    button.push_back(new QPushButton(“myButton”);
    QObject::connect(button[i], SIGNAL(clicked()), signalMapper, SLOT(map())); 
    signalMapper->setMapping(button[i], i);
}
QObject::connect(signalMapper, SIGNAL(mapped(int)), this, SLOT(mySlot(int)));

void class::mySlot(int position)
{ 
   QMessageBox msgBox;
   msgBox.setText(QString(“Button #: %1”).arg(position));
   msgBox.exec();
}