I am new to Qt and I'm creating a simple application which will playback an audio file. I realized that I am lacking the Qt Multimedia API for audio when I wrote:
#include <QAudioOutput>
..and I get that there is no such file.
I downloaded the latest Qt SDK framework and I can't find a way to add these APIs. I am using Qt creator IDE.
IS there a way to get the multimedia functionality working maybe as an add-on or some other way?
Thanks.
Try including it like this:
#include <QtMultimedia/QAudioOutput>
Without more info it's hard to say, but possibly your include paths are just incomplete. Read https://doc.qt.io/archives/qt-4.7/qtmultimedia.html and be sure to add
QT += multimedia
to your project file.
try
sudo apt-get install qtmultimedia5-dev
in your pro. file try: QT += widgets multimedia
来源：https://stackoverflow.com/questions/5410170/why-am-i-missing-the-qt-multimedia-functionality