实现按回车时，就进行某种功能

void DoWorkDialog::keyPressEvent(QKeyEvent *keyEvent)

{

if (keyEvent->key() == Qt::Key_Enter || keyEvent->key() == Qt::Key_Return) {

if(m_getMathListResult.type().count() <= m_questionId)

return;

switch(m_getMathListResult.type().at(m_questionId).toInt()) {

case 2:

on_kouSuanSubmitButton_clicked();

break;

case 3:

on_countSubmitButton_clicked();

break;

case 4:

on_speakSubmitButton_clicked();

break;

case 5:

on_applicationSumitButton_clicked();

break;

default:

break;

}

}

}