fixed build with -Werror=zero-as-null-pointer-constant

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@8572 90c681e8-e032-0410-971d-27865f9a5e38

41 files changed, 133 insertions, 133 deletions

diff --git a/src/qmmpui/aboutdialog_p.h b/src/qmmpui/aboutdialog_p.h
index 3857c48e6..4c7b97775 100644
--- a/src/qmmpui/aboutdialog_p.h
+++ b/src/qmmpui/aboutdialog_p.h
@@ -33,7 +33,7 @@ class AboutDialog : public QDialog, private Ui::AboutDialog
 {
     Q_OBJECT
 public:
-    AboutDialog(QWidget* parent = 0);
+    AboutDialog(QWidget* parent = nullptr);
     ~AboutDialog();
 
 private:
diff --git a/src/qmmpui/addurldialog.cpp b/src/qmmpui/addurldialog.cpp
index 73a0b52ac..e121cf51e 100644
--- a/src/qmmpui/addurldialog.cpp
+++ b/src/qmmpui/addurldialog.cpp
@@ -61,7 +61,7 @@ AddUrlDialog::~AddUrlDialog()
     settings.setValue("URLDialog/history", m_history);
 }
 
-QPointer<AddUrlDialog> AddUrlDialog::m_instance = 0;
+QPointer<AddUrlDialog> AddUrlDialog::m_instance = nullptr;
 
 void AddUrlDialog::popup(QWidget* parent, PlayListModel* model)
 {
diff --git a/src/qmmpui/columneditor_p.h b/src/qmmpui/columneditor_p.h
index 2c49973c1..60883df0f 100644
--- a/src/qmmpui/columneditor_p.h
+++ b/src/qmmpui/columneditor_p.h
@@ -34,7 +34,7 @@ class ColumnEditor : public QDialog
 {
     Q_OBJECT
 public:
-    explicit ColumnEditor(const QString &name, const QString &patt, QWidget *parent = 0);
+    explicit ColumnEditor(const QString &name, const QString &patt, QWidget *parent = nullptr);
     ~ColumnEditor();
 
     QString name() const;
diff --git a/src/qmmpui/commandlinemanager.cpp b/src/qmmpui/commandlinemanager.cpp
index 295e78cdb..c7e04e88c 100644
--- a/src/qmmpui/commandlinemanager.cpp
+++ b/src/qmmpui/commandlinemanager.cpp
@@ -32,8 +32,8 @@
 #include "mediaplayer.h"
 #include "commandlinemanager.h"
 
-QList<CommandLineHandler *> *CommandLineManager::m_options = 0;
-QHash<CommandLineHandler*, QString> *CommandLineManager::m_files = 0;
+QList<CommandLineHandler *> *CommandLineManager::m_options = nullptr;
+QHash<CommandLineHandler*, QString> *CommandLineManager::m_files = nullptr;
 
 void CommandLineManager::checkOptions()
 {
@@ -51,7 +51,7 @@ void CommandLineManager::checkOptions()
             else
                 qWarning("CommandLineManager: %s", qPrintable(loader.errorString ()));
 
-            CommandLineHandler *option = 0;
+            CommandLineHandler *option = nullptr;
             if (plugin)
                 option = qobject_cast<CommandLineHandler *>(plugin);
 
@@ -99,7 +99,7 @@ bool CommandLineManager::hasOption(const QString &opt_str, CommandLineHandler::O
 {
     checkOptions();
     if(flags)
-        *flags = 0;
+        *flags = nullptr;
     foreach(CommandLineHandler *opt, *m_options)
     {
         int id = opt->identify(opt_str);
diff --git a/src/qmmpui/commandlinemanager.h b/src/qmmpui/commandlinemanager.h
index 88a6177b7..9deb02ab7 100644
--- a/src/qmmpui/commandlinemanager.h
+++ b/src/qmmpui/commandlinemanager.h
@@ -42,7 +42,7 @@ public:
     /*!
      * Return \b true if command \b opt_str is supported, otherwise returns \b false.
      */
-    static bool hasOption(const QString &opt_str, CommandLineHandler::OptionFlags *flags = 0);
+    static bool hasOption(const QString &opt_str, CommandLineHandler::OptionFlags *flags = nullptr);
     /*!
      * Prints usage to stdout.
      */
diff --git a/src/qmmpui/configdialog.h b/src/qmmpui/configdialog.h
index 6f773e727..8b1df9b67 100644
--- a/src/qmmpui/configdialog.h
+++ b/src/qmmpui/configdialog.h
@@ -46,7 +46,7 @@ public:
      * Constructor.
      * @param parent Parent widget
      */
-    ConfigDialog(QWidget *parent = 0);
+    ConfigDialog(QWidget *parent = nullptr);
     /*!
      * Destructor
      */
diff --git a/src/qmmpui/covereditor_p.h b/src/qmmpui/covereditor_p.h
index 4cf7f649f..6621865a1 100644
--- a/src/qmmpui/covereditor_p.h
+++ b/src/qmmpui/covereditor_p.h
@@ -37,7 +37,7 @@ class CoverEditor : public QWidget
 {
     Q_OBJECT
 public:
-    explicit CoverEditor(MetaDataModel *model, const QString &coverPath, QWidget *parent = 0);
+    explicit CoverEditor(MetaDataModel *model, const QString &coverPath, QWidget *parent = nullptr);
 
     bool isEditable() const;
     void save();
diff --git a/src/qmmpui/coverviewer_p.h b/src/qmmpui/coverviewer_p.h
index dbe3ba65b..28b438d1b 100644
--- a/src/qmmpui/coverviewer_p.h
+++ b/src/qmmpui/coverviewer_p.h
@@ -34,7 +34,7 @@ class CoverViewer : public QWidget
 {
 Q_OBJECT
 public:
-    CoverViewer(QWidget *parent = 0);
+    CoverViewer(QWidget *parent = nullptr);
 
     ~CoverViewer();
 
diff --git a/src/qmmpui/detailsdialog.cpp b/src/qmmpui/detailsdialog.cpp
index 8258f3d2a..f11ae8e54 100644
--- a/src/qmmpui/detailsdialog.cpp
+++ b/src/qmmpui/detailsdialog.cpp
@@ -44,7 +44,7 @@ DetailsDialog::DetailsDialog(QList<PlayListTrack *> tracks, QWidget *parent)
     m_ui->directoryButton->setIcon(QApplication::style()->standardIcon(QStyle::SP_DirOpenIcon));
     m_ui->nextButton->setIcon(QApplication::style()->standardIcon(QStyle::SP_ArrowRight));
     m_ui->prevButton->setIcon(QApplication::style()->standardIcon(QStyle::SP_ArrowLeft));
-    m_metaDataModel = 0;
+    m_metaDataModel = nullptr;
     m_page = 0;
     m_tracks = tracks;
     updatePage();
@@ -56,7 +56,7 @@ DetailsDialog::~DetailsDialog()
     if(m_metaDataModel)
     {
         delete m_metaDataModel;
-        m_metaDataModel = 0;
+        m_metaDataModel = nullptr;
     }
     delete m_ui;
 }
@@ -85,7 +85,7 @@ void DetailsDialog::on_buttonBox_clicked(QAbstractButton *button)
     if(m_ui->buttonBox->standardButton(button) == QDialogButtonBox::Save)
     {
         TagEditor *tagEditor = qobject_cast<TagEditor *>(m_ui->tabWidget->currentWidget());
-        CoverEditor *coverEditor = 0;
+        CoverEditor *coverEditor = nullptr;
         if(tagEditor)
             tagEditor->save();
         else if((coverEditor = qobject_cast<CoverEditor *>(m_ui->tabWidget->currentWidget())))
@@ -100,7 +100,7 @@ void DetailsDialog::on_buttonBox_clicked(QAbstractButton *button)
         if(m_metaDataModel)
         {
             delete m_metaDataModel;
-            m_metaDataModel = 0;
+            m_metaDataModel = nullptr;
         }
         reject();
     }
@@ -108,7 +108,7 @@ void DetailsDialog::on_buttonBox_clicked(QAbstractButton *button)
 
 void DetailsDialog::on_tabWidget_currentChanged(int index)
 {
-    CoverEditor *coverEditor = 0;
+    CoverEditor *coverEditor = nullptr;
     if(qobject_cast<TagEditor *>(m_ui->tabWidget->widget(index)))
         m_ui->buttonBox->button(QDialogButtonBox::Save)->setEnabled(m_metaDataModel && !m_metaDataModel->isReadOnly());
     else if((coverEditor = qobject_cast<CoverEditor *>(m_ui->tabWidget->currentWidget())))
@@ -141,7 +141,7 @@ void DetailsDialog::closeEvent(QCloseEvent *)
     if(m_metaDataModel)
     {
         delete m_metaDataModel;
-        m_metaDataModel = 0;
+        m_metaDataModel = nullptr;
     }
 }
 
@@ -150,7 +150,7 @@ void DetailsDialog::updatePage()
     if(m_metaDataModel)
     {
         delete m_metaDataModel;
-        m_metaDataModel = 0;
+        m_metaDataModel = nullptr;
     }
 
     while (m_ui->tabWidget->count() > 1)
diff --git a/src/qmmpui/detailsdialog.h b/src/qmmpui/detailsdialog.h
index 357cf14f0..de1fe3a0b 100644
--- a/src/qmmpui/detailsdialog.h
+++ b/src/qmmpui/detailsdialog.h
@@ -48,7 +48,7 @@ public:
      * @param tracks a list of tracks which should be used.
      * @param parent Parent widget.
      */
-    DetailsDialog(QList<PlayListTrack *> tracks, QWidget *parent = 0);
+    DetailsDialog(QList<PlayListTrack *> tracks, QWidget *parent = nullptr);
     /*!
      * Destructor.
      */
diff --git a/src/qmmpui/filedialog.cpp b/src/qmmpui/filedialog.cpp
index 75cef24e2..05804a75c 100644
--- a/src/qmmpui/filedialog.cpp
+++ b/src/qmmpui/filedialog.cpp
@@ -30,9 +30,9 @@
 #include "qtfiledialog_p.h"
 
 //static functions
-FileDialog* FileDialog::m_instance = 0;
-QList<QmmpUiPluginCache*> *FileDialog::m_cache = 0;
-FileDialogFactory *FileDialog::m_currentFactory = 0;
+FileDialog* FileDialog::m_instance = nullptr;
+QList<QmmpUiPluginCache*> *FileDialog::m_cache = nullptr;
+FileDialogFactory *FileDialog::m_currentFactory = nullptr;
 
 void FileDialog::loadPlugins()
 {
@@ -163,7 +163,7 @@ void FileDialog::popup(QWidget *parent,
 FileDialog* FileDialog::instance()
 {
     loadPlugins();
-    FileDialogFactory *selected = 0;
+    FileDialogFactory *selected = nullptr;
 
     QSettings settings (Qmmp::configFile(), QSettings::IniFormat);
     QString name = settings.value("FileDialog", "qt_dialog").toString();
@@ -185,7 +185,7 @@ FileDialog* FileDialog::instance()
     if(m_instance)
     {
         delete m_instance;
-        m_instance = 0;
+        m_instance = nullptr;
     }
 
     m_currentFactory = selected;
@@ -196,7 +196,7 @@ FileDialog* FileDialog::instance()
 //base implementation
 FileDialog::FileDialog() : QObject(), m_initialized(false)
 {
-    m_lastDir = 0;
+    m_lastDir = nullptr;
 }
 
 FileDialog::~FileDialog() {}
diff --git a/src/qmmpui/filedialog.h b/src/qmmpui/filedialog.h
index a9099c374..405fb7db5 100644
--- a/src/qmmpui/filedialog.h
+++ b/src/qmmpui/filedialog.h
@@ -74,7 +74,7 @@ public:
      * @param caption Dialog title.
      * @param dir Default directory.
      */
-    static QString getExistingDirectory(QWidget *parent = 0,
+    static QString getExistingDirectory(QWidget *parent = nullptr,
                                         const QString &caption = QString(),
                                         const QString &dir = QString());
     /*!
@@ -87,11 +87,11 @@ public:
      * (example: "Audio (*.mp3 *.ogg);;Text files (*.txt);;XML files (*.xml)").
      * @param selectedFilter Default selected filter
      */
-    static QString getOpenFileName(QWidget *parent = 0,
+    static QString getOpenFileName(QWidget *parent = nullptr,
                                    const QString &caption = QString(),
                                    const QString &dir = QString(),
                                    const QString &filter = QString(),
-                                   QString *selectedFilter = 0);
+                                   QString *selectedFilter = nullptr);
     /*!
      * This is a static function that will open modal file dialog and
      * return an existing file selected by the user.
@@ -102,11 +102,11 @@ public:
      * (example: "Audio (*.mp3 *.ogg);;Text files (*.txt);;XML files (*.xml)").
      * @param selectedFilter Default selected filter.
      */
-    static QStringList getOpenFileNames(QWidget *parent = 0,
+    static QStringList getOpenFileNames(QWidget *parent = nullptr,
                                         const QString &caption = QString(),
                                         const QString &dir = QString(),
                                         const QString &filter = QString(),
-                                        QString *selectedFilter = 0);
+                                        QString *selectedFilter = nullptr);
     /*!
      * This is a static function that will open modal file dialog and
      * return a file name selected by the user. The file does not have to exist.
@@ -117,11 +117,11 @@ public:
      * (example: "Audio (*.mp3 *.ogg);;Text files (*.txt);;XML files (*.xml)").
      * @param selectedFilter Default selected filter.
      */
-    static QString getSaveFileName (QWidget *parent = 0,
+    static QString getSaveFileName (QWidget *parent = nullptr,
                                     const QString &caption = QString(),
                                     const QString &dir = QString(),
                                     const QString &filter = QString(),
-                                    QString *selectedFilter = 0);
+                                    QString *selectedFilter = nullptr);
     /*!
      * Opens nonmodal file dialog. Selected file dialog should support nonmodal mode.
      * Otherwise this function creates modal dialog.
@@ -138,11 +138,11 @@ public:
      *                 m_playListModel, SLOT(addFileList(QStringList)),
      *                 tr("Choose a directory"));
      */
-    static void popup(QWidget *parent = 0,
+    static void popup(QWidget *parent = nullptr,
                       Mode mode = AddFiles,
-                      QString *dir = 0,
-                      QObject *receiver = 0,
-                      const char *member = 0,
+                      QString *dir = nullptr,
+                      QObject *receiver = nullptr,
+                      const char *member = nullptr,
                       const QString &caption = QString(),
                       const QString &filters = QString());
 
@@ -186,7 +186,7 @@ protected:
     */
     virtual QStringList exec(QWidget *parent, const QString &dir, Mode mode,
                              const QString &caption, const QString &filter = QString(),
-                             QString *selectedFilter = 0) = 0;
+                             QString *selectedFilter = nullptr) = 0;
 
 private slots:
     void updateLastDir(const QStringList&);
diff --git a/src/qmmpui/fileloader.cpp b/src/qmmpui/fileloader.cpp
index ac3a43749..5650e17e1 100644
--- a/src/qmmpui/fileloader.cpp
+++ b/src/qmmpui/fileloader.cpp
@@ -289,19 +289,19 @@ void FileLoader::run()
 
 void FileLoader::add(const QString &path)
 {
-    insert(0, QStringList() << path);
+    insert(nullptr, QStringList() << path);
 }
 
 void FileLoader::add(const QStringList &paths)
 {
-    insert(0, paths);
+    insert(nullptr, paths);
 }
 
 void FileLoader::addPlayList(const QString &fmt, const QByteArray &data)
 {
     m_mutex.lock();
     LoaderTask task;
-    task.before = 0;
+    task.before = nullptr;
     task.playListFormat = fmt;
     task.playListContent = data;
     m_tasks.append(task);
diff --git a/src/qmmpui/fileloader_p.h b/src/qmmpui/fileloader_p.h
index f6b68f7c1..02772f726 100644
--- a/src/qmmpui/fileloader_p.h
+++ b/src/qmmpui/fileloader_p.h
@@ -49,7 +49,7 @@ public:
      * Constructs FileLoader object.
      * @param parent QObject parent
      */
-    FileLoader(QObject *parent = 0);
+    FileLoader(QObject *parent = nullptr);
     /*!
      * Object destructor.
      */
@@ -83,10 +83,10 @@ signals:
 
 private:
     void run();
-    QList<PlayListTrack*> processFile(const QString &path, QStringList *ignoredPaths = 0);
+    QList<PlayListTrack*> processFile(const QString &path, QStringList *ignoredPaths = nullptr);
     void insertPlayList(const QString &fmt, const QByteArray &contents, PlayListItem *before);
     void insertPlayList(const QString &path, PlayListItem *before);
-    void addDirectory(const QString &s, PlayListItem *before = 0);
+    void addDirectory(const QString &s, PlayListItem *before = nullptr);
     bool checkRestrictFilters(const QFileInfo &info);
     bool checkExcludeFilters(const QFileInfo &info);
     void removeIgnoredTracks(QList<PlayListTrack *> *tracks, const QStringList &ignoredPaths);
diff --git a/src/qmmpui/general.cpp b/src/qmmpui/general.cpp
index c233ef2d4..420277afd 100644
--- a/src/qmmpui/general.cpp
+++ b/src/qmmpui/general.cpp
@@ -25,10 +25,10 @@
 #include "qmmpuiplugincache_p.h"
 #include "general.h"
 
-QList<QmmpUiPluginCache*> *General::m_cache = 0;
+QList<QmmpUiPluginCache*> *General::m_cache = nullptr;
 QStringList General::m_enabledNames;
-QHash <GeneralFactory*, QObject*> *General::m_generals = 0;
-QObject *General::m_parent = 0;
+QHash <GeneralFactory*, QObject*> *General::m_generals = nullptr;
+QObject *General::m_parent = nullptr;
 
 void General::loadPlugins()
 {
diff --git a/src/qmmpui/groupedcontainer.cpp b/src/qmmpui/groupedcontainer.cpp
index 76a0bdaea..5b9bd562f 100644
--- a/src/qmmpui/groupedcontainer.cpp
+++ b/src/qmmpui/groupedcontainer.cpp
@@ -209,7 +209,7 @@ PlayListItem *GroupedContainer::item(int index) const
     if(index >= count() || index < 0)
     {
         qWarning("GroupedContainer: index is out of range");
-        return 0;
+        return nullptr;
     }
     return m_items.at(index);
 }
@@ -219,7 +219,7 @@ PlayListTrack *GroupedContainer::track(int index) const
     updateCache();
     PlayListItem *i = item(index);
     if(!i || i->isGroup())
-        return 0;
+        return nullptr;
     return dynamic_cast<PlayListTrack *> (i);
 }
 
@@ -228,7 +228,7 @@ PlayListGroup *GroupedContainer::group(int index) const
     PlayListItem *i = item(index);
     if(i && i->isGroup())
         return dynamic_cast<PlayListGroup *> (i);
-    return 0;
+    return nullptr;
 }
 
 bool GroupedContainer::contains(PlayListItem *item) const
@@ -259,7 +259,7 @@ PlayListTrack *GroupedContainer::findTrack(int number) const
         }
         firstNumber += group->count();
     }
-    return 0;
+    return nullptr;
 }
 
 void GroupedContainer::removeTrack(PlayListTrack *track)
@@ -290,7 +290,7 @@ void GroupedContainer::removeTracks(QList<PlayListTrack *> tracks)
 bool GroupedContainer::move(QList<int> indexes, int from, int to)
 {
     updateCache();
-    PlayListGroup *group = 0;
+    PlayListGroup *group = nullptr;
     int firstIndex = 0, lastIndex = 0;
 
     for(int i = 0; i < m_groups.count(); ++i)
diff --git a/src/qmmpui/jumptotrackdialog_p.h b/src/qmmpui/jumptotrackdialog_p.h
index ae5b5a8d4..6cffc7aee 100644
--- a/src/qmmpui/jumptotrackdialog_p.h
+++ b/src/qmmpui/jumptotrackdialog_p.h
@@ -41,7 +41,7 @@ class JumpToTrackDialog : public QDialog, private Ui::JumpToTrackDialog
     Q_OBJECT
 
 public:
-    JumpToTrackDialog(PlayListModel *model, QWidget* parent = 0);
+    JumpToTrackDialog(PlayListModel *model, QWidget* parent = nullptr);
     ~JumpToTrackDialog();
     void refresh();
 
diff --git a/src/qmmpui/mediaplayer.cpp b/src/qmmpui/mediaplayer.cpp
index 8dd0fbf61..f9a6f85ef 100644
--- a/src/qmmpui/mediaplayer.cpp
+++ b/src/qmmpui/mediaplayer.cpp
@@ -27,7 +27,7 @@
 #include "qmmpuisettings.h"
 #include "mediaplayer.h"
 
-MediaPlayer *MediaPlayer::m_instance = 0;
+MediaPlayer *MediaPlayer::m_instance = nullptr;
 
 MediaPlayer::MediaPlayer(QObject *parent)
         : QObject(parent)
@@ -35,8 +35,8 @@ MediaPlayer::MediaPlayer(QObject *parent)
     if(m_instance)
         qFatal("StateHandler: only one instance is allowed");
     m_instance = this;
-    m_pl_manager = 0;
-    m_core = 0;
+    m_pl_manager = nullptr;
+    m_core = nullptr;
     m_skips = 0;
     m_finishTimer = new QTimer(this);
     m_finishTimer->setSingleShot(true);
@@ -57,7 +57,7 @@ MediaPlayer::MediaPlayer(QObject *parent)
 
 MediaPlayer::~MediaPlayer()
 {
-    m_instance = 0;
+    m_instance = nullptr;
 }
 
 MediaPlayer* MediaPlayer::instance()
@@ -142,7 +142,7 @@ void MediaPlayer::playNext()
 void MediaPlayer::updateNextUrl()
 {
     m_nextUrl.clear();
-    PlayListTrack *track = 0;
+    PlayListTrack *track = nullptr;
     if(m_settings->isRepeatableTrack())
         track = m_pl_manager->currentPlayList()->currentTrack();
     else if(!m_settings->isNoPlayListAdvance())
diff --git a/src/qmmpui/mediaplayer.h b/src/qmmpui/mediaplayer.h
index ad2dd7b6d..4a971cad8 100644
--- a/src/qmmpui/mediaplayer.h
+++ b/src/qmmpui/mediaplayer.h
@@ -40,7 +40,7 @@ public:
      * Object constructor,
      * @param parent Parent object.
      */
-    MediaPlayer(QObject *parent = 0);
+    MediaPlayer(QObject *parent = nullptr);
     /*!
      * Destructor
      */
diff --git a/src/qmmpui/metadataformattermenu.h b/src/qmmpui/metadataformattermenu.h
index fa9b7fcf1..3c26d4d0c 100644
--- a/src/qmmpui/metadataformattermenu.h
+++ b/src/qmmpui/metadataformattermenu.h
@@ -38,7 +38,7 @@ public:
         COLUMN_MENU
     };
 
-    explicit MetaDataFormatterMenu(Type type, QWidget *parent = 0);
+    explicit MetaDataFormatterMenu(Type type, QWidget *parent = nullptr);
 
 signals:
     void patternSelected(const QString &pattern);
diff --git a/src/qmmpui/metadatahelper.cpp b/src/qmmpui/metadatahelper.cpp
index 3d1d63061..cd97791df 100644
--- a/src/qmmpui/metadatahelper.cpp
+++ b/src/qmmpui/metadatahelper.cpp
@@ -20,7 +20,7 @@
 
 #include "metadatahelper_p.h"
 
-MetaDataHelper *MetaDataHelper::m_instance = 0;
+MetaDataHelper *MetaDataHelper::m_instance = nullptr;
 
 MetaDataHelper::MetaDataHelper()
 {
@@ -31,7 +31,7 @@ MetaDataHelper::MetaDataHelper()
 
 MetaDataHelper::~MetaDataHelper()
 {
-    m_instance = 0;
+    m_instance = nullptr;
     delete m_group_formatter;
     qDeleteAll(m_title_formatters);
     m_title_formatters.clear();
diff --git a/src/qmmpui/normalcontainer.cpp b/src/qmmpui/normalcontainer.cpp
index 306bc922c..f1ef088f7 100644
--- a/src/qmmpui/normalcontainer.cpp
+++ b/src/qmmpui/normalcontainer.cpp
@@ -129,7 +129,7 @@ PlayListItem *NormalContainer::item(int index) const
     if(index >= count() || index < 0)
     {
         qWarning("NormalContainer: index is out of range");
-        return 0;
+        return nullptr;
     }
     return m_items.at(index);
 }
@@ -143,7 +143,7 @@ PlayListTrack *NormalContainer::track(int index) const
 PlayListGroup *NormalContainer::group(int index) const
 {
     Q_UNUSED(index);
-    return 0;
+    return nullptr;
 }
 
 bool NormalContainer::contains(PlayListItem *item) const
@@ -160,7 +160,7 @@ PlayListTrack *NormalContainer::findTrack(int number) const
 {
     if(number >= count() || number < 0)
     {
-        return 0;
+        return nullptr;
     }
     return dynamic_cast<PlayListTrack *> (m_items.at(number));
 }
diff --git a/src/qmmpui/playlistdownloader.cpp b/src/qmmpui/playlistdownloader.cpp
index a7463c277..16365e43d 100644
--- a/src/qmmpui/playlistdownloader.cpp
+++ b/src/qmmpui/playlistdownloader.cpp
@@ -28,7 +28,7 @@
 
 PlayListDownloader::PlayListDownloader(QObject *parent) : QObject(parent)
 {
-    m_getReply = 0;
+    m_getReply = nullptr;
     m_ua = QString("qmmp/%1").arg(Qmmp::strVersion()).toLatin1();
     m_manager = new QNetworkAccessManager(this);
     connect(m_manager, SIGNAL(finished (QNetworkReply *)), SLOT(readResponse(QNetworkReply *)));
@@ -94,7 +94,7 @@ void PlayListDownloader::readResponse(QNetworkReply *reply)
 
     if(reply == m_getReply)
     {
-        m_getReply = 0;
+        m_getReply = nullptr;
 
         if(m_model.isNull())
         {
diff --git a/src/qmmpui/playlistdownloader.h b/src/qmmpui/playlistdownloader.h
index af6cb377d..3d5dd46dc 100644
--- a/src/qmmpui/playlistdownloader.h
+++ b/src/qmmpui/playlistdownloader.h
@@ -40,7 +40,7 @@ public:
     /*!
      * Object constructor.
      */
-    explicit PlayListDownloader(QObject *parent = 0);
+    explicit PlayListDownloader(QObject *parent = nullptr);
 
 signals:
     /*!
diff --git a/src/qmmpui/playlistheadermodel.h b/src/qmmpui/playlistheadermodel.h
index 755ae019d..9d1303695 100644
--- a/src/qmmpui/playlistheadermodel.h
+++ b/src/qmmpui/playlistheadermodel.h
@@ -43,7 +43,7 @@ public:
      * Constructs a playlist model.
      * @param parent QObject parent.
      */
-    explicit PlayListHeaderModel(QObject *parent = 0);
+    explicit PlayListHeaderModel(QObject *parent = nullptr);
     /*!
      * Object destructor.
      */
@@ -93,13 +93,13 @@ public:
      * @param index Index of the column.
      * @param parent Parent widget,
      */
-    void execEdit(int index, QWidget *parent = 0);
+    void execEdit(int index, QWidget *parent = nullptr);
     /*!
      * Opens internal column editor and inserts new column if user press "ok".
      * @param index Required index of the column.
      * @param parent Parent widget.
      */
-    void execInsert(int index, QWidget *parent = 0);
+    void execInsert(int index, QWidget *parent = nullptr);
     /*!
      * Returns number of the columns.
      */
diff --git a/src/qmmpui/playlistmanager.cpp b/src/qmmpui/playlistmanager.cpp
index a29c4338d..a468ce6ca 100644
--- a/src/qmmpui/playlistmanager.cpp
+++ b/src/qmmpui/playlistmanager.cpp
@@ -30,7 +30,7 @@
 #include "qmmpuisettings.h"
 #include "playlistmanager.h"
 
-PlayListManager *PlayListManager::m_instance = 0;
+PlayListManager *PlayListManager::m_instance = nullptr;
 
 PlayListManager::PlayListManager(QObject *parent) : QObject(parent)
 {
@@ -40,8 +40,8 @@ PlayListManager::PlayListManager(QObject *parent) : QObject(parent)
     m_instance = this;
     m_ui_settings = QmmpUiSettings::instance();
     m_header = new PlayListHeaderModel(this);
-    m_current = 0;
-    m_selected = 0;
+    m_current = nullptr;
+    m_selected = nullptr;
     m_timer = new QTimer(this);
     m_timer->setInterval(5000);
     m_timer->setSingleShot(true);
@@ -69,7 +69,7 @@ PlayListManager::PlayListManager(QObject *parent) : QObject(parent)
 PlayListManager::~PlayListManager()
 {
     writePlayLists();
-    m_instance = 0;
+    m_instance = nullptr;
 }
 
 PlayListManager* PlayListManager::instance()
@@ -247,7 +247,7 @@ PlayListModel *PlayListManager::playListAt(int i) const
 {
     if(i >= 0 && i < m_models.count())
         return m_models.at(i);
-    return 0;
+    return nullptr;
 }
 
 PlayListHeaderModel *PlayListManager::headerModel()
diff --git a/src/qmmpui/playlistmodel.cpp b/src/qmmpui/playlistmodel.cpp
index 2a99e40c6..3883f28ad 100644
--- a/src/qmmpui/playlistmodel.cpp
+++ b/src/qmmpui/playlistmodel.cpp
@@ -41,11 +41,11 @@
 PlayListModel::PlayListModel(const QString &name, QObject *parent)
         : QObject(parent) , m_selection()
 {
-    qsrand(time(0));
+    qsrand(time(nullptr));
     m_ui_settings = QmmpUiSettings::instance();
     m_total_duration = 0;
     m_current = 0;
-    m_stop_track = 0;
+    m_stop_track = nullptr;
     m_name = name;
     m_loader = new FileLoader(this);
     m_task = new PlayListTask(this);
@@ -267,20 +267,20 @@ int PlayListModel::columnCount() const
 
 PlayListTrack* PlayListModel::currentTrack() const
 {
-    return m_container->isEmpty() ? 0 : m_current_track;
+    return m_container->isEmpty() ? nullptr : m_current_track;
 }
 
 PlayListTrack *PlayListModel::nextTrack() const
 {
     if(m_container->isEmpty() || !m_play_state)
-        return 0;
+        return nullptr;
     if(m_stop_track && m_stop_track == currentTrack())
-        return 0;
+        return nullptr;
     if(!isEmptyQueue())
         return m_queued_songs.at(0);
     int index = m_play_state->nextIndex();
     if(index < 0 || (index + 1 > m_container->count()))
-        return 0;
+        return nullptr;
     return m_container->track(index);
 }
 
@@ -350,7 +350,7 @@ bool PlayListModel::next()
 {
     if(m_stop_track == currentTrack())
     {
-        m_stop_track = 0;
+        m_stop_track = nullptr;
         emit listChanged(STOP_AFTER);
         return false;
     }
@@ -378,7 +378,7 @@ void PlayListModel::clear()
 {
     m_loader->finish();
     m_current = 0;
-    m_stop_track = 0;
+    m_stop_track = nullptr;
     m_container->clear();
     m_queued_songs.clear();
     m_total_duration = 0;
@@ -428,7 +428,7 @@ PlayListTrack *PlayListModel::findTrack(int track_index) const
 QList<PlayListItem *> PlayListModel::findTracks(const QString &str) const
 {
     QList<PlayListItem *> items;
-    PlayListItem *item = 0;
+    PlayListItem *item = nullptr;
     if(str.isEmpty())
         return items;
 
@@ -562,7 +562,7 @@ int PlayListModel::removeTrackInternal(int i)
     if(m_stop_track == track)
     {
         flags |= STOP_AFTER;
-        m_stop_track = 0;
+        m_stop_track = nullptr;
     }
     if(track->isSelected())
         flags |= SELECTION;
@@ -574,7 +574,7 @@ int PlayListModel::removeTrackInternal(int i)
     {
         flags |= CURRENT;
         if(m_container->isEmpty())
-            m_current_track = 0;
+            m_current_track = nullptr;
         else
         {
             m_current = i > 0 ? qMin(i - 1, m_container->count() - 1) : 0;
@@ -870,7 +870,7 @@ void PlayListModel::prepareForShufflePlaying(bool val)
 
 void PlayListModel::prepareGroups(bool enabled)
 {
-    PlayListContainer *container = 0;
+    PlayListContainer *container = nullptr;
     if(enabled)
         container = new GroupedContainer;
     else
@@ -927,7 +927,7 @@ void PlayListModel::onTaskFinished()
 
             if(m_stop_track && !m_container->contains(m_stop_track))
             {
-                m_stop_track = 0;
+                m_stop_track = nullptr;
                 flags |= STOP_AFTER;
             }
 
@@ -1006,7 +1006,7 @@ void PlayListModel::refresh()
 void PlayListModel::clearQueue()
 {
      m_queued_songs.clear();
-     m_stop_track = 0;
+     m_stop_track = nullptr;
      emit listChanged(QUEUE);
 }
 
@@ -1016,11 +1016,11 @@ void PlayListModel::stopAfterSelected()
     int flags = STOP_AFTER;
     if(!m_queued_songs.isEmpty())
     {
-        m_stop_track = m_stop_track != m_queued_songs.last() ? m_queued_songs.last() : 0;
+        m_stop_track = m_stop_track != m_queued_songs.last() ? m_queued_songs.last() : nullptr;
     }
     else if(selected_tracks.count() == 1)
     {
-        m_stop_track = m_stop_track != selected_tracks.at(0) ? selected_tracks.at(0) : 0;
+        m_stop_track = m_stop_track != selected_tracks.at(0) ? selected_tracks.at(0) : nullptr;
     }
     else if(selected_tracks.count() > 1)
     {
diff --git a/src/qmmpui/playlistmodel.h b/src/qmmpui/playlistmodel.h
index 6ca9471bf..0662aa4a0 100644
--- a/src/qmmpui/playlistmodel.h
+++ b/src/qmmpui/playlistmodel.h
@@ -109,7 +109,7 @@ public:
      * @param name Playlist name.
      * @param parent QObject parent
      */
-    PlayListModel(const QString &name, QObject *parent = 0);
+    PlayListModel(const QString &name, QObject *parent = nullptr);
     /*!
      * Object destructor.
      */
@@ -480,12 +480,12 @@ public slots:
      * Shows details for the first selected item.
      * @param parent parent Widget.
      */
-    void showDetails(QWidget *parent = 0);
+    void showDetails(QWidget *parent = nullptr);
     /*!
      * Shows the details for the current song (if any).
      * @param parent parent widget.
      */
-    void showDetailsForCurrent(QWidget *parent = 0);
+    void showDetailsForCurrent(QWidget *parent = nullptr);
     /*!
      * Ensures that the current track is visible.
      */
diff --git a/src/qmmpui/playlistparser.cpp b/src/qmmpui/playlistparser.cpp
index 2d8f67f06..c30c02ab5 100644
--- a/src/qmmpui/playlistparser.cpp
+++ b/src/qmmpui/playlistparser.cpp
@@ -27,7 +27,7 @@
 #include "playlistformat.h"
 #include "playlistparser.h"
 
-QList<PlayListFormat*> *PlayListParser::m_formats = 0;
+QList<PlayListFormat*> *PlayListParser::m_formats = nullptr;
 
 QList<PlayListFormat *> PlayListParser::formats()
 {
@@ -65,7 +65,7 @@ PlayListFormat *PlayListParser::findByMime(const QString &mime)
         if(format->properties().contentTypes.contains(mime))
             return format;
     }
-    return 0;
+    return nullptr;
 }
 
 PlayListFormat *PlayListParser::findByPath(const QString &filePath)
@@ -80,7 +80,7 @@ PlayListFormat *PlayListParser::findByPath(const QString &filePath)
                 return format;
         }
     }
-    return 0;
+    return nullptr;
 }
 
 PlayListFormat *PlayListParser::findByUrl(const QUrl &url)
@@ -172,7 +172,7 @@ void PlayListParser::loadFormats()
         else
             qWarning("PlayListParser: %s", qPrintable(loader.errorString ()));
 
-        PlayListFormat *fmt = 0;
+        PlayListFormat *fmt = nullptr;
         if (plugin)
             fmt = qobject_cast<PlayListFormat *>(plugin);
 
diff --git a/src/qmmpui/playlisttask.cpp b/src/qmmpui/playlisttask.cpp
index 027719a8e..8326af7ac 100644
--- a/src/qmmpui/playlisttask.cpp
+++ b/src/qmmpui/playlisttask.cpp
@@ -114,7 +114,7 @@ PlayListTask::PlayListTask(QObject *parent) : QThread(parent)
 {
     m_reverted = true;
     m_align_groups = false;
-    m_current_track = 0;
+    m_current_track = nullptr;
     m_column = 0;
     m_task = EMPTY;
     m_sort_mode = PlayListModel::TITLE;
@@ -294,8 +294,8 @@ void PlayListTask::run()
 
     if(m_task == SORT || m_task == SORT_SELECTION || m_task == SORT_BY_COLUMN)
     {
-        bool(*compareLessFunc)(TrackField*, TrackField*) = 0;
-        bool(*compareGreaterFunc)(TrackField*, TrackField*) = 0;
+        bool(*compareLessFunc)(TrackField*, TrackField*) = nullptr;
+        bool(*compareGreaterFunc)(TrackField*, TrackField*) = nullptr;
 
         QList<TrackField*>::iterator begin = m_fields.begin();
         QList<TrackField*>::iterator end = m_fields.end();
@@ -368,7 +368,7 @@ void PlayListTask::run()
     }
     else if(m_task == REMOVE_INVALID)
     {
-        TrackField *f = 0;
+        TrackField *f = nullptr;
         bool ok = false;
         for(int i = 0; i < m_fields.count(); ++i)
         {
@@ -386,7 +386,7 @@ void PlayListTask::run()
     else if(m_task == REMOVE_DUPLICATES)
     {
         QStringList urls;
-        TrackField *f = 0;
+        TrackField *f = nullptr;
         for(int i = 0; i < m_fields.count(); ++i)
         {
             f = m_fields.at(i);
@@ -403,7 +403,7 @@ void PlayListTask::run()
     }
     else if(m_task == REFRESH)
     {
-        TrackField *f = 0;
+        TrackField *f = nullptr;
         MetaDataManager *mm = MetaDataManager::instance();
         bool ok = false;
         //find invalid files
@@ -516,7 +516,7 @@ QList<PlayListTrack *> PlayListTask::takeResults(PlayListTrack **current_track)
     else if(m_task == REMOVE_INVALID || m_task == REMOVE_DUPLICATES || m_task == REFRESH)
     {
         int index = 0;
-        PlayListTrack *t = 0;
+        PlayListTrack *t = nullptr;
         for (int i = m_indexes.count() - 1; i >= 0; i--)
         {
             index = m_indexes.at(i);
@@ -524,7 +524,7 @@ QList<PlayListTrack *> PlayListTask::takeResults(PlayListTrack **current_track)
             if(t == m_current_track)
             {
                 if(m_tracks.isEmpty())
-                    m_current_track = 0;
+                    m_current_track = nullptr;
                 else if(index > 0 && index <= m_tracks.count())
                     m_current_track = m_tracks[index - 1];
                 else
@@ -566,5 +566,5 @@ void PlayListTask::clear()
     m_indexes.clear();
     m_input_tracks.clear();
     m_tracks.clear();
-    m_current_track = 0;
+    m_current_track = nullptr;
 }
diff --git a/src/qmmpui/qmmpuiplugincache.cpp b/src/qmmpui/qmmpuiplugincache.cpp
index ed739168d..126dcb650 100644
--- a/src/qmmpui/qmmpuiplugincache.cpp
+++ b/src/qmmpui/qmmpuiplugincache.cpp
@@ -33,10 +33,10 @@
 QmmpUiPluginCache::QmmpUiPluginCache(const QString &file, QSettings *settings)
 {
     m_error = false;
-    m_instance = 0;
-    m_generalFactory = 0;
-    m_uiFactory = 0;
-    m_fileDialogFactory = 0;
+    m_instance = nullptr;
+    m_generalFactory = nullptr;
+    m_uiFactory = nullptr;
+    m_fileDialogFactory = nullptr;
     m_priority = 0;
     bool update = false;
     QFileInfo info(file);
@@ -105,9 +105,9 @@ QmmpUiPluginCache::QmmpUiPluginCache(QObject *instance)
 {
     m_error = false;
     m_instance = instance;
-    m_generalFactory = 0;
-    m_uiFactory = 0;
-    m_fileDialogFactory = 0;
+    m_generalFactory = nullptr;
+    m_uiFactory = nullptr;
+    m_fileDialogFactory = nullptr;
     m_priority = 0;
 
     if(GeneralFactory *factory = generalFactory())
@@ -190,7 +190,7 @@ FileDialogFactory *QmmpUiPluginCache::fileDialogFactory()
 QObject *QmmpUiPluginCache::instance()
 {
     if(m_error)
-        return 0;
+        return nullptr;
     if(m_instance)
         return m_instance;
     QPluginLoader loader(m_path);
diff --git a/src/qmmpui/qmmpuisettings.cpp b/src/qmmpui/qmmpuisettings.cpp
index 561e6c496..dfb0d9c0d 100644
--- a/src/qmmpui/qmmpuisettings.cpp
+++ b/src/qmmpui/qmmpuisettings.cpp
@@ -26,7 +26,7 @@
 #include "playlistmanager.h"
 #include "qmmpuisettings.h"
 
-QmmpUiSettings *QmmpUiSettings::m_instance = 0;
+QmmpUiSettings *QmmpUiSettings::m_instance = nullptr;
 
 QmmpUiSettings::QmmpUiSettings(QObject *parent) : QObject(parent)
 {
@@ -67,7 +67,7 @@ QmmpUiSettings::QmmpUiSettings(QObject *parent) : QObject(parent)
 
 QmmpUiSettings::~QmmpUiSettings()
 {
-    m_instance = 0;
+    m_instance = nullptr;
     sync();
     delete m_helper;
 }
diff --git a/src/qmmpui/qmmpuisettings.h b/src/qmmpui/qmmpuisettings.h
index 36e0f930a..fb137358c 100644
--- a/src/qmmpui/qmmpuisettings.h
+++ b/src/qmmpui/qmmpuisettings.h
@@ -42,7 +42,7 @@ public:
      * @param parent Parent object.
      * This functions is for internal usage only, use QmmpSettings::instance() instead.
      */
-    explicit QmmpUiSettings(QObject *parent = 0);
+    explicit QmmpUiSettings(QObject *parent = nullptr);
     /*!
      * Destructor.
      */
diff --git a/src/qmmpui/radioitemdelegate_p.h b/src/qmmpui/radioitemdelegate_p.h
index 1b0887554..b99e13472 100644
--- a/src/qmmpui/radioitemdelegate_p.h
+++ b/src/qmmpui/radioitemdelegate_p.h
@@ -33,7 +33,7 @@ class RadioItemDelegate : public QStyledItemDelegate
 {
     Q_OBJECT
 public:
-    explicit RadioItemDelegate(QObject *parent = 0);
+    explicit RadioItemDelegate(QObject *parent = nullptr);
 
     void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
     QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const;
diff --git a/src/qmmpui/tageditor_p.h b/src/qmmpui/tageditor_p.h
index c4ffd0f94..1e332086c 100644
--- a/src/qmmpui/tageditor_p.h
+++ b/src/qmmpui/tageditor_p.h
@@ -36,7 +36,7 @@ class TagEditor : public QWidget
 {
 Q_OBJECT
 public:
-    TagEditor(TagModel *tagModel, QWidget *parent = 0);
+    TagEditor(TagModel *tagModel, QWidget *parent = nullptr);
     ~TagEditor();
 
     void save();
diff --git a/src/qmmpui/tagupdater.cpp b/src/qmmpui/tagupdater.cpp
index 50f0f926c..bb0ca4bfa 100644
--- a/src/qmmpui/tagupdater.cpp
+++ b/src/qmmpui/tagupdater.cpp
@@ -37,7 +37,7 @@ void TagUpdater::updateTags()
         if (!t->isUsed() && t->isSheduledForDeletion())
         {
             delete t;
-            t = 0;
+            t = nullptr;
         }
         else
         {
diff --git a/src/qmmpui/templateeditor.h b/src/qmmpui/templateeditor.h
index 5e769f0e4..51dc453a0 100644
--- a/src/qmmpui/templateeditor.h
+++ b/src/qmmpui/templateeditor.h
@@ -39,7 +39,7 @@ public:
      * Constructor.
      * @param parent Parent widget.
      */
-    explicit TemplateEditor(QWidget *parent = 0);
+    explicit TemplateEditor(QWidget *parent = nullptr);
     /*!
      * Returns current template from editor.
      */
@@ -62,7 +62,7 @@ public:
      * @param ok This varible will be set to \b true (\b false) if the user pressed OK (Cancel).
      */
     static QString getTemplate (QWidget *parent, const QString &title, const QString &text = QString(),
-                                const QString &default_template = QString(), bool *ok = 0);
+                                const QString &default_template = QString(), bool *ok = nullptr);
 
 private slots:
     void on_resetButton_clicked();
diff --git a/src/qmmpui/uihelper.cpp b/src/qmmpui/uihelper.cpp
index 1d965a9b6..6f3a37415 100644
--- a/src/qmmpui/uihelper.cpp
+++ b/src/qmmpui/uihelper.cpp
@@ -38,14 +38,14 @@
 #include "mediaplayer.h"
 #include "uihelper.h"
 
-UiHelper *UiHelper::m_instance = 0;
+UiHelper *UiHelper::m_instance = nullptr;
 
 UiHelper::UiHelper(QObject *parent)
         : QObject(parent)
 {
     m_instance = this;
-    m_jumpDialog = 0;
-    m_model = 0;
+    m_jumpDialog = nullptr;
+    m_model = nullptr;
     General::create(parent);
     QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
     m_lastDir = settings.value("General/last_dir", QDir::homePath()).toString(); //last directory
diff --git a/src/qmmpui/uihelper.h b/src/qmmpui/uihelper.h
index 2ba17cc27..6594e1adb 100644
--- a/src/qmmpui/uihelper.h
+++ b/src/qmmpui/uihelper.h
@@ -49,7 +49,7 @@ public:
      * Object constructor,
      * @param parent Parent object
      */
-    UiHelper(QObject *parent = 0);
+    UiHelper(QObject *parent = nullptr);
     /*!
      * Destructor
      */
@@ -88,14 +88,14 @@ public:
      * @param title Menu title.
      * @param parent Parent widget
      */
-    QMenu *createMenu(MenuType type, const QString &title = QString(), QWidget *parent = 0);
+    QMenu *createMenu(MenuType type, const QString &title = QString(), QWidget *parent = nullptr);
     /*!
      * Registers existing menu for access from general plugins.
      * @param type Menu type.
      * @param menu Menu pointer.
      * @param before An action, after which the rest are added.
      */
-    void registerMenu(MenuType type, QMenu *menu, QAction *before = 0);
+    void registerMenu(MenuType type, QMenu *menu, QAction *before = nullptr);
     /*!
      * Opens 'Add Files' dialog
      * @param parent Parent widget
@@ -149,7 +149,7 @@ public:
      * Shows about dialog
      * @param parent Parent widget
      */
-    void about(QWidget *parent = 0);
+    void about(QWidget *parent = nullptr);
     /*!
      * Returns a pointer to the object's instance.
      */
diff --git a/src/qmmpui/uiloader.cpp b/src/qmmpui/uiloader.cpp
index 1c742d587..b144e6c40 100644
--- a/src/qmmpui/uiloader.cpp
+++ b/src/qmmpui/uiloader.cpp
@@ -23,7 +23,7 @@
 #include "qmmpuiplugincache_p.h"
 #include "uiloader.h"
 
-QList<QmmpUiPluginCache*> *UiLoader::m_cache = 0;
+QList<QmmpUiPluginCache*> *UiLoader::m_cache = nullptr;
 
 void UiLoader::loadPlugins()
 {
@@ -113,5 +113,5 @@ UiFactory *UiLoader::selected()
     }
     if (!m_cache->isEmpty())
         return m_cache->at(0)->uiFactory();
-    return 0;
+    return nullptr;
 }
diff --git a/src/qmmpui/winfileassocpage_p.h b/src/qmmpui/winfileassocpage_p.h
index 3eecc5489..9ba234084 100644
--- a/src/qmmpui/winfileassocpage_p.h
+++ b/src/qmmpui/winfileassocpage_p.h
@@ -37,7 +37,7 @@ class QMMPUI_EXPORT WinFileAssocPage : public QWidget
 {
     Q_OBJECT
 public:
-    WinFileAssocPage(QWidget *parent = 0);
+    WinFileAssocPage(QWidget *parent = nullptr);
     virtual ~WinFileAssocPage();