【发布时间】：2014-03-02 15:06:45
【问题描述】：
如何在DownloadProgress 窗口的“选项”窗口中显示下载文件的下载进度？
Options.h：
class Options : public QDialog
{
Q_OBJECT
QScopedPointer<QNetworkAccessManager> nam;
public:
explicit Options(QWidget *parent = 0);
~Options();
QNetworkReply *red;
private slots:
void writeData();
void downloadFinished();
private:
Ui::Options *ui;
public:
QString getResolution(int width, int height);
};
Options.cpp
(...)
void Options::on_toggleGDownload_clicked()
{
QString rep;
// shows download progress
DownloadProgress n;
n.exec();
QFile dwnl("somepath");
dwnl.open(QIODevice::WriteOnly);
QNetworkAccessManager *nam = new QNetworkAccessManager(this);
red = nam->get(QNetworkRequest(QUrl("someurl")));
connect(red, SIGNAL(readyRead()), this, SLOT(writeData()));
connect(red, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(updateDownloadProgress(qint64, qint64)));
}
(...)
下载进度.h：
class DownloadProgress;
}
class DownloadProgress : public QDialog
{
Q_OBJECT
public:
explicit DownloadProgress(QWidget *parent = 0);
~DownloadProgress();
public slots:
void updateDownloadProgress(qint64, qint64);
private:
Ui::DownloadProgress *ui;
};
下载进度.cpp：
(...)
DownloadProgress::DownloadProgress(QWidget *parent) :
QDialog(parent),
ui(new Ui::DownloadProgress)
{
ui->setupUi(this);
}
DownloadProgress::~DownloadProgress()
{
delete ui;
}
void DownloadProgress::updateDownloadProgress(qint64 readBytes, qint64 totalBytes)
{
ui->progressBar->setMaximum(totalBytes);
ui->progressBar->setValue(readBytes);
}
我对 Qt5 很陌生。请原谅我的愚蠢:(
【问题讨论】：