QMediaPlayer编译错误

问题描述

我安装Qt5，因为Phonon不支持在Qt5我被迫使用别的东西，所以我决定使用QtMultimedia。

.pro文件： / p>

  QT + = core gui 
 CONFIG + = mobility 
 MOBILITY + = multimedia 
  

.cpp代码：

  #includemainwindow.h
 #includeui_mainwindow.h
 #include< QtGui> 
 #include< QtCore> 
 #include< QtMultimedia / QMediaPlayer> 
 
 ... 
 
 void MainWindow :: on_pushButton_clicked（）
 {
 QMediaPlayer * player = new QMediaPlayer（this）; 
 player-> setVolume（50）; 
 player-> setMedia（QUrl :: fromLocalFile（some_path））; 
 player-> play（）; 
} 
  

但我遇到以下错误：

>

解决方案

在.pro文件中将多媒体模块添加到QT中，运行qmake 并建立您的专案：

  QT + = core gui multimedia 
  

在Qt 5中，QMediaPlayer类位于多媒体。
您可能需要模块（我看到你有一个主窗口）

LE：使用包含无模块文件夹：

  #include< QMediaPlayer> 
  

I installed Qt5 and since Phonon is not supported in Qt5 I'm forced to use something else, so I decided to use QtMultimedia.

.pro file:

QT       += core gui
CONFIG += mobility
MOBILITY += multimedia

.cpp code:

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QtGui>
#include <QtCore>
#include <QtMultimedia/QMediaPlayer>

...

void MainWindow::on_pushButton_clicked()
{
    QMediaPlayer *player = new QMediaPlayer(this);
    player->setVolume(50);
    player->setMedia(QUrl::fromLocalFile("some_path"));
    player->play();
}

But I'm getting following errors:

How can I solve this. Thank you

解决方案

Add multimedia module to QT in .pro file, run qmake and than build your project:

QT += core gui multimedia

In Qt 5 that QMediaPlayer class is in multimedia module.And you might want the widgets module too (i see you have a mainwindow)

LE: Use the include without module folder:

#include <QMediaPlayer>

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