关于定时器和延时 - QTCN开发网

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    connect(&timer,SIGNAL(timeout()),this,SLOT(slot_timeout()));
    connect(&timer1,SIGNAL(timeout()),this,SLOT(slot_timeout1()));
}

Widget::~Widget()
{
    delete ui;
}

void Widget::on_pushButton_clicked()
{
    qDebug()<<"click";
    timer.start(20000);
    count1 = 20;
    timer1.start(1000);
}

void Widget::slot_timeout()
{
    qDebug()<<"timeout";
    ui->textEdit->setText(QString::number(count++));
    while(true){
        QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
    }
    count1=20;
}
void Widget::slot_timeout1()
{
    count1--;
    ui->lineEdit->setText(QString::number(count1));
}

void Widget::on_pushButton_2_clicked()
{
    qDebug()<<"on click start";
    while(true){
        QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
    }
    qDebug()<<"on click end";
}