一段小程序

[weixin_38066087]

Window::Window(QWidget *parent)    : QWidget(parent){QLCDNumber* timeNumber=new QLCDNumber(this);timeNumber->setNumDigits(2);   timeNumber->setProperty("intValue",60);QTimer *timer=new QTimer(this);    connect(timer,SIGNAL(timeout()),this,SLOT(timeoutslot()));    timer->start(1000);}void Window::timeoutslot(){    static  int time=60;    timeNumber->display(time);    time--;}出现运行时的错误 哪错了？QLCDNumber* timeNumber 已经在头文件定义了timeNumber->display(time);把这句注释掉就没事 高手帮我看看