Error compilation in migration from 5.15 to 6.7

[Bozzo]

I have the following class

.h file

#ifndef MULTIMEDIACONTROLLER_H
#define MULTIMEDIACONTROLLER_H

#include "MultimediaManager.h"

#include <QtCore/QObject>

class QQuickItem;
class MediaListModel;

class MultimediaController : public QObject
{
  Q_OBJECT

  Q_PROPERTY(QQuickItem *videoOutput READ videoOutput WRITE setVideoOutput NOTIFY videoOutputChanged)
  Q_PROPERTY(MultimediaState multimediaState READ multimediaState NOTIFY multimediaStateChanged)
  Q_PROPERTY(PlayerState playerState READ playerState NOTIFY playerStateChanged)
  Q_PROPERTY(QString bluetoothSinkAddress READ bluetoothSinkAddress WRITE setBluetoothSinkAddress)
  Q_PROPERTY(QString mediaName READ mediaName NOTIFY mediaNameChanged)
  Q_PROPERTY(QString backgroundImage READ backgroundImage NOTIFY backgroundImageChanged)
  Q_PROPERTY(QString webUrl READ webUrl NOTIFY webUrlChanged)
  Q_PROPERTY(QString uri READ uri NOTIFY URIChanged)
  Q_PROPERTY(double rate READ rate WRITE setRate NOTIFY rateChanged)
  Q_PROPERTY(bool isDVBRadio READ isDVBRadio NOTIFY dvbRadioChanged)
  Q_PROPERTY(MediaListModel *webRadioChannelList READ webRadioChannelList NOTIFY webRadioChannelListChanged)
  Q_PROPERTY(MediaListModel *webLinkList READ webLinkList NOTIFY webLinkListChanged)


public:
  ~MultimediaController();
  MultimediaController(QObject *parent = nullptr);
  Q_INVOKABLE double getVolume() const;

  enum MultimediaState {
    NoMediaLoaded = NO_MEDIA_LOADED,
    StartupVideo = STARTUP_VIDEO,
    WorkoutCooldown = WORKOUT_COOLDOWN,
    YourViewBackgroundImage = YOURVIEW_BACKGROUND_IMAGE,
    YourViewBackgroundVideo = YOURVIEW_BACKGROUND_VIDEO,
    DigitalTV = DIGITAL_TV,
    DigitalTvRadio = DIGITAL_TV_RADIO,
    WebRadio = WEB_RADIO,
    YouTube = YOUTUBE,
    WebBrowser = WEB_BROWSER,
    LocalFileAudio = LOCAL_FILE_AUDIO,
    LocalFileVideo = LOCAL_FILE_VIDEO
  };
  Q_ENUM(MultimediaState)

  enum PlayerState {
    Unknown = UNKNOWN_PLAYER_STATE,
    Stopped = PLAYER_STOPPED,
    Loading = PLAYER_LOADING,
    Playing = PLAYER_PLAYING
  };
  Q_ENUM(PlayerState)

  QQuickItem *videoOutput() const;
  MultimediaState multimediaState() const;
  PlayerState playerState() const;
  QString bluetoothSinkAddress() const;
  QString backgroundImage() const;
  QString mediaName() const;
  QString webUrl() const;
  QString uri() const;
  double rate() const;
  bool isDVBRadio() const;
  MediaListModel *webRadioChannelList();
  MediaListModel *webLinkList();

  void setVideoOutput(QQuickItem *item);
  void setBluetoothSinkAddress(QString &address);

  Q_INVOKABLE void stop();
  Q_INVOKABLE void setYourViewPicture(const QString &picturePath);
  Q_INVOKABLE void setYourViewVideo(const QString &videoPath);
  Q_INVOKABLE void tuneToTVChannel(const QString &channelName, const QString &channelUrl, const bool isRadio);
  Q_INVOKABLE void tuneToWebRadioChannel(const QString &channelName, const QString &channelUrl);
  Q_INVOKABLE void browseWebPage(const QString &webUrl, const QString &pageName);
  Q_INVOKABLE void playYouTubeVideo(const QString &videoUrl, const QString &audioUrl);
  Q_INVOKABLE void playLocalMedia(const QString &mediaName, const QString &mediaUrl, const QString &fileType);
  Q_INVOKABLE void playStatupVideo();
  Q_INVOKABLE void goCooldown();
  Q_INVOKABLE void setVolume(double volume);
  Q_INVOKABLE void setRate(double rate);
  Q_INVOKABLE void reset();
  Q_INVOKABLE void reloadWebLists();

signals:
  void mediaNameChanged();
  void webUrlChanged();
  void rateChanged();
  void videoOutputChanged();
  void multimediaStateChanged();
  void playerStateChanged();
  void statupVideoFinished();
  void backgroundImageChanged();
  void error();
  void playbackFinished();
  void dvbRadioChanged();
  void webRadioChannelListChanged();
  void webLinkListChanged();
  void URIChanged();

private:
  double _volume;

};

#endif

.cpp file

#include <QDebug>
#include <QtMath>
#include <QProcess>
#include "MultimediaController.h"

#include "MediaListModel.h"

extern bool apolloIsRunning;

MultimediaController::MultimediaController(QObject *parent)
  : QObject(parent)
{
  qRegisterMetaType<MediaListModel *>();
  MultimediaManager *mm = MultimediaManager::instance();
  connect(mm, &MultimediaManager::videoOutputChanged, this, &MultimediaController::videoOutputChanged);
  connect(mm, &MultimediaManager::mediaNameChanged, this, &MultimediaController::mediaNameChanged);
  connect(mm, &MultimediaManager::webUrlChanged, this, &MultimediaController::webUrlChanged);
  connect(mm, &MultimediaManager::rateChanged, this, &MultimediaController::rateChanged);
  connect(mm, &MultimediaManager::multimediaStateChanged, this, &MultimediaController::multimediaStateChanged);
  connect(mm, &MultimediaManager::playerStateChanged, this, &MultimediaController::playerStateChanged);
  connect(mm, &MultimediaManager::statupVideoFinished, this, &MultimediaController::statupVideoFinished);
  connect(mm, &MultimediaManager::backgroundImageChanged, this, &MultimediaController::backgroundImageChanged);
  connect(mm, &MultimediaManager::dvbRadioChanged, this, &MultimediaController::dvbRadioChanged);
  connect(mm, &MultimediaManager::error, this, &MultimediaController::error);
  connect(mm, &MultimediaManager::playbackFinished, this, &MultimediaController::playbackFinished);
  connect(mm, &MultimediaManager::webRadioChannelListChanged, this, &MultimediaController::webRadioChannelListChanged);
  connect(mm, &MultimediaManager::webLinkListChanged, this, &MultimediaController::webLinkListChanged);
  connect(mm, &MultimediaManager::URIChanged, this, &MultimediaController::URIChanged);
}

MultimediaController::~MultimediaController()
{
}

QQuickItem *MultimediaController::videoOutput() const
{
  return MultimediaManager::instance()->videoOutput();
}

MultimediaController::MultimediaState MultimediaController::multimediaState() const
{
  return static_cast<MultimediaController::MultimediaState>(MultimediaManager::instance()->multimediaState());
}

MultimediaController::PlayerState MultimediaController::playerState() const
{
  return static_cast<MultimediaController::PlayerState>(MultimediaManager::instance()->playerState());
}

double MultimediaController::rate() const
{
  return MultimediaManager::instance()->rate();
}

QString MultimediaController::bluetoothSinkAddress() const
{
  return MultimediaManager::instance()->bluetoothSinkAddress();
}

QString MultimediaController::mediaName() const
{
  return MultimediaManager::instance()->mediaName();
}

QString MultimediaController::webUrl() const
{
  return MultimediaManager::instance()->webUrl();
}

QString MultimediaController::uri() const
{
  return MultimediaManager::instance()->uri();
}

QString MultimediaController::backgroundImage() const
{
  return MultimediaManager::instance()->backgroundImage();
}

bool MultimediaController::isDVBRadio() const
{
  return MultimediaManager::instance()->isDVBRadio();
}

MediaListModel *MultimediaController::webRadioChannelList()
{
  return MultimediaManager::instance()->webRadioChannelList();
}

MediaListModel *MultimediaController::webLinkList()
{
  return MultimediaManager::instance()->webLinkList();
}

void MultimediaController::stop()
{
  MultimediaManager::instance()->stop();
}

void MultimediaController::setVolume(double volume)
{
  if (apolloIsRunning)
  {
    qDebug() << "Impostazione volume" << volume;
    QString command = QString("/opt/apollo/bin/pulseaudio_manager.py --set %1").arg(qCeil(volume * 200.0));
    qDebug() << command;
    system(qPrintable(command));
  }

  _volume = volume;
}

double MultimediaController::getVolume() const
{
  if (apolloIsRunning)
  {
  QProcess process;

    process.start("/bin/bash", QStringList() << "-c" << QStringLiteral("/opt/apollo/bin/pulseaudio_manager.py --get"));
    process.waitForFinished();
    QString result = process.readAllStandardOutput();
    process.close();
    if (result.size() != 0)
    {
      return result.toDouble() / 200.0;
    }
  }

  return _volume;
}

void MultimediaController::setRate(double rate)
{
  MultimediaManager::instance()->setRate(rate);
}

void MultimediaController::setVideoOutput(QQuickItem *item)
{
  MultimediaManager::instance()->setVideoOutput(item);
}

void MultimediaController::setBluetoothSinkAddress(QString &address)
{
  MultimediaManager::instance()->setBluetoothSinkAddress(address);
}

void MultimediaController::setYourViewPicture(const QString &picturePath)
{
  MultimediaManager::instance()->setYourViewPicture(picturePath);
}

void MultimediaController::setYourViewVideo(const QString &videoPath)
{
  MultimediaManager::instance()->setYourViewVideo(videoPath);
}

void MultimediaController::tuneToTVChannel(const QString &channelName, const QString &channelUrl, const bool isRadio)
{
  MultimediaManager::instance()->tuneToTVChannel(channelName, channelUrl, isRadio);
}

void MultimediaController::tuneToWebRadioChannel(const QString &channelName, const QString &channelUrl)
{
  MultimediaManager::instance()->tuneToWebRadioChannel(channelName, channelUrl);
}

void MultimediaController::browseWebPage(const QString &webUrl, const QString &pageName)
{
  MultimediaManager::instance()->browseWebPage(webUrl, pageName);
}

void MultimediaController::playYouTubeVideo(const QString &videoUrl, const QString &audioUrl)
{
  MultimediaManager::instance()->playYouTubeVideo(videoUrl, audioUrl);
}

void MultimediaController::playLocalMedia(const QString &mediaName, const QString &mediaUrl, const QString &fileType)
{
  MultimediaManager::instance()->playLocalMedia(mediaName, mediaUrl, fileType);
}

void MultimediaController::playStatupVideo()
{
  MultimediaManager::instance()->playStatupVideo();
}

void MultimediaController::goCooldown()
{
  MultimediaManager::instance()->goCooldown();
}

void MultimediaController::reset()
{
  MultimediaManager::instance()->reset();
}

void MultimediaController::reloadWebLists()
{
  MultimediaManager::instance()->reloadWebLists();
}

In 5.15 the compilation is fine and all words, in 6.7 I have the following errors

/build/Desktop_Qt_6_7_1-Debug/moc_MultimediaController.cpp:242: required from ‘constexpr const QtPrivate::QMetaTypeInterface const qt_incomplete_metaTypeArray [60]<{anonymous}::qt_meta_stringdata_CLASSMultimediaControllerENDCLASS_t, QtPrivate::TypeAndForceComplete<QQuickItem*, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController::MultimediaState, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController::PlayerState, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<double, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<bool, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MediaListModel*, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MediaListModel*, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController::MultimediaState, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController::PlayerState, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<double, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const bool, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<double, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<double, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> > >’
/home/mirko/Qt/6.7.1/gcc_64/include/QtCore/qmetatype.h:2600:43: required from ‘constexpr const QtPrivate::QMetaTypeInterface* const qt_incomplete_metaTypeArray [60]<{anonymous}::qt_meta_stringdata_CLASSMultimediaControllerENDCLASS_t, QtPrivate::TypeAndForceComplete<QQuickItem*, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController::MultimediaState, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController::PlayerState, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<QString, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<double, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<bool, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MediaListModel*, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MediaListModel*, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController::MultimediaState, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController::PlayerState, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<MultimediaController, std::integral_constant<bool, true> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<double, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const bool, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<const QString&, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<double, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<double, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> >, QtPrivate::TypeAndForceComplete<void, std::integral_constant<bool, false> > >’
moc_MultimediaController.cpp:242:5: required from here
/home/mirko/Qt/6.7.1/gcc_64/include/QtCore/qmetatype.h:2660:55: in ‘constexpr’ expansion of ‘QtPrivate::qTryMetaTypeInterfaceForType<{anonymous}::qt_meta_stringdata_CLASSMultimediaControllerENDCLASS_t, TypeAndForceComplete<MediaListModel*, std::integral_constant<bool, true> > >()’*

Any ideas?????

Thanks for the help

[sierdzio]

In Qt 6, all Q_PROPERTY types need to be fully defined (no forward-declaration). So just move required #include statements from .cpp to .h and it should work.