/////////////////////mainwindow.h
#ifndef MAINWINDOW_H#define MAINWINDOW_H
#include <QMainWindow>
#include <QTimer>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
QTimer *timer;
int counter;
private slots:
void slotadd();
void on_radio500_clicked();
void on_radio1000_clicked();
private:
Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H
///////////////////mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
counter = 0;
timer = new QTimer();
timer->setInterval(500);
connect(timer,SIGNAL(timeout()),this,SLOT(slotadd()));
timer->start();
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::slotadd()
{
counter++;
if(counter >= 10000) counter = 0;
QString s;
s.sprintf("%d",counter);
ui->label->setText(s);
}
void MainWindow::on_radio500_clicked()
{
timer->setInterval(500);
}
void MainWindow::on_radio1000_clicked()
{
timer->setInterval(1000);
}