Qt消息框怎么插入图片

void Widget::showfileButton()
{
    QMessageBox customMsgBox;
    customMsgBox.setWindowTitle(tr("dialog"));
    QPushButton *yesBtn=customMsgBox.addButton(tr("Yes"),QMessageBox::ActionRole);

    customMsgBox.setText(tr("this is a dialog"));
    customMsgBox.setIconPixmap(QPixmap(":/new/prefix1/Hello.png"));
    customMsgBox.exec();//显示此消息框


    //customMsgBox.Close();
    return;

}

各位大神，是路径不对吗，还是其他问题。急，在线等！

http://zhidao.baidu.com/link?url=4zg3CRNfJyaGbnG9YjWfyslQgMgxTKFaGLhW0oGJjkp0RsNJ13aZwhcgNikiJ-j_LFmuQUWgBlLreopGe8MxV_