Qt里的QAudioOutput怎样与QSlider同步

如果是播放类似mp3文件这种，都用到QMediaPlayer，不会使用QAudioOutput的，关于播放进度与slider的协调使用信号与槽关联，见下：

connect(ui->horizontalSlider, SIGNAL(sliderMoved(int)), this, SLOT(setPosition(int)))

void MainWindow::setPosition(int position)

{

player->setPosition(position)

}

Phonon速度很慢，可别怪我，耐心等它蹦出来

#include <QtGui>

#include <Phonon>

class VWidget : public QWidget

{

public:

VWidget (QWidget *parent = 0) : QWidget (parent) {

mediaObject = new Phonon::MediaObject (this)

videoWidget = new Phonon::VideoWidget (this)

Phonon::createPath (mediaObject, videoWidget)

audioOutput = new Phonon::AudioOutput (Phonon::VideoCategory, this)

Phonon::createPath (mediaObject, audioOutput)

mediaObject->setCurrentSource (QString ("R:/temp/release/demo.avi"))

mediaObject->play()

}

private:

Phonon::MediaObject *mediaObject

Phonon::VideoWidget *videoWidget

Phonon::AudioOutput *audioOutput

}

int main (int argc, char *argv[])

{

QApplication app (argc, argv)

VWidget *qWidget = new VWidget

qWidget->setMinimumSize (640, 480)

qWidget->show()

qApp->processEvents()

return app.exec()

}

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