#include <QApplication>
#include <QWidget>
#include <QProgressBar>
#include <QVBoxLayout>
#include <QTimer>
class MyWidget : public QWidget {
Q_OBJECT
public:
MyWidget(QWidget *parent = nullptr) : QWidget(parent) {
QVBoxLayout *layout = new QVBoxLayout(this);
QProgressBar *progressBar = new QProgressBar(this);
progressBar->setRange(0, 100); // 设置范围为 0 到 100
progressBar->setValue(0); // 初始值为 0
layout->addWidget(progressBar);
setLayout(layout);
// 模拟任务进度的更新
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(updateProgress()));
timer->start(1000); // 每秒更新一次进度
}
private slots:
void updateProgress() {
QProgressBar *progressBar = findChild<QProgressBar*>();
if (progressBar) {
int currentValue = progressBar->value();
if (currentValue < 100) {
progressBar->setValue(currentValue + 10); // 每次增加 10
}
}
}
};
int main(int argc, char *argv[]) {
QApplication app(argc, argv);
MyWidget widget;
widget.setWindowTitle("QProgressBar Example");
widget.show();
return app.exec();
}
#include "main.moc"
