【QT】实现简单秒表功能

 

 

代码实现

#include "timerun.h"
#include "ui_timerun.h"

timerun::timerun(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::timerun),
    mtime(0,0,0)
{
    ui->setupUi(this);
    connect(&timer,SIGNAL(timeout()),this,SLOT(update_show()));
}
void timerun::update_show()
{
    mtime=mtime.addMSecs(1);
    ui->label->setText(mtime.toString("hh:mm:ss:zzz"));
}

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

void timerun::on_btnstart_clicked()
{
    timer.start(1);
}

void timerun::on_btnreset_clicked()
{
    mtime.setHMS(0,0,0);
}

void timerun::on_btncount_clicked()
{
    QString text=ui->label->text();
    ui->textBrowser->append(text);
}

void timerun::on_btnstop_clicked()
{
    timer.stop();
}