linux qt 进度条

#include <QApplication>
#include <QWidget>
#include <QProgressBar>
#include <QPushButton>
#include <QVBoxLayout>
#include <QTimer>

class ProgressBarDemo : public QWidget {
    Q_OBJECT

public:
    ProgressBarDemo(QWidget *parent = nullptr) : QWidget(parent), progressBar(new QProgressBar(this)), button(new QPushButton("Start", this)) {
        QVBoxLayout *layout = new QVBoxLayout(this);
        layout->addWidget(progressBar);
        layout->addWidget(button);

        connect(button, &QPushButton::clicked, this, &ProgressBarDemo::startProgress);
    }

private slots:
    void startProgress() {
        progressBar->setValue(0);
        timer = new QTimer(this);
        connect(timer, &QTimer::timeout, this, &ProgressBarDemo::updateProgress);
        timer->start(100); // Update every 100 milliseconds
    }

    void updateProgress() {
        int value = progressBar->value();
        if (value < 100) {
            progressBar->setValue(value + 1);
        } else {
            timer->stop();
        }
    }

private:
    QProgressBar *progressBar;
    QPushButton *button;
    QTimer *timer;
};

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);
    ProgressBarDemo demo;
    demo.show();
    return app.exec();
}

#include "main.moc"