close

image

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
#include <QtConcurrent/QtConcurrentRun>
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
 
private slots:
    void on_pushButton_start_clicked();
 
    void on_pushButton_stop_clicked();
 
private:
    Ui::MainWindow *ui;
    int counter;
    bool running;
 
private:
    void addCounter();
};
#endif // MAINWINDOW_H


image


image 

void MainWindow::on_pushButton_start_clicked()
{
    running = true;
    QtConcurrent::run(this, &MainWindow::addCounter);
}
 
void MainWindow::addCounter()
{
    while(running)
    {
        counter++;
        ui->label->setText(QString::number(counter));
        _sleep(100);
    }
}

image 


void MainWindow::on_pushButton_stop_clicked()
{
    running = false;
}


image

arrow
arrow
    全站熱搜

    me1237guy 發表在 痞客邦 留言(0) 人氣()