【QT】实现简单秒表功能

 1 #include "timerun.h"
 2 #include "ui_timerun.h"
 3 
 4 timerun::timerun(QWidget *parent) :
 5     QMainWindow(parent),
 6     ui(new Ui::timerun),
 7     mtime(0,0,0)
 8 {
 9     ui->setupUi(this);
10     connect(&timer,SIGNAL(timeout()),this,SLOT(update_show()));
11 }
12 void timerun::update_show()
13 {
14     mtime=mtime.addMSecs(1);
15     ui->label->setText(mtime.toString("hh:mm:ss:zzz"));
16 }
17 
18 timerun::~timerun()
19 {
20     delete ui;
21 }
22 
23 void timerun::on_btnstart_clicked()
24 {
25     timer.start(1);
26 }
27 
28 void timerun::on_btnreset_clicked()
29 {
30     mtime.setHMS(0,0,0);
31 }
32 
33 void timerun::on_btncount_clicked()
34 {
35     QString text=ui->label->text();
36     ui->textBrowser->append(text);
37 }
38 
39 void timerun::on_btnstop_clicked()
40 {
41     timer.stop();
42 }