Qt滚动效果

  m_scrollBar=ui->textEdit->horizontalScrollBar();   timer=new QTimer(this);   timer->start(1000);   connect(timer,SIGNAL(timeout()),this,SLOT(slotUpdateTime()));

定时器：实现滚动效果

void Lable::slotUpdateTime(){    m_scrollBar->setMinimum( 0 );    m_scrollBar->setMaximum( ui->textEdit->height() );    int max=ui->textEdit->height();   m_scrollBar->setValue(row );    qDebug()<<row<<"*************"<<max;    if(row>=max)row=0;    else        row+=20;}