QT5-控件-QProgressBar-进度条-用来做下载进度，文件读取进度还不错

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QProgressBar>

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
MainWindow(QWidget *parent = 0);
~MainWindow();

QProgressBar* progress[10] ;
};

#endif // MAINWINDOW_H

#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
this->resize(400,300);
progress[0] = new QProgressBar(this);
progress[0]->setMinimum(0);\
progress[0]->setMaximum(100);
progress[0]->setValue(50);
progress[0]->setOrientation(Qt::Horizontal);
progress[0]->setGeometry(10,30,300,30);

progress[1] = new QProgressBar(this);
progress[1]->setRange(0,100);
progress[1]->setValue(70);
progress[1]->setOrientation(Qt::Horizontal);
progress[1]->setGeometry(10,70,300,30);
progress[1]->setInvertedAppearance(true); // 设置为true则与默认方向相反
}

MainWindow::~MainWindow()
{

}

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();

return a.exec();
}

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();

return a.exec();
}