diff --git a/src/libs/installer/binaryformat.cpp b/src/libs/installer/binaryformat.cpp
index 42c94ab1..9a46095c 100644
--- a/src/libs/installer/binaryformat.cpp
+++ b/src/libs/installer/binaryformat.cpp
@@ -293,7 +293,7 @@ void ResourceCollection::setName(const QByteArray &name)
 void ResourceCollection::appendResource(const QSharedPointer<Resource>& resource)
 {
     Q_ASSERT(resource);
-    resource->setParent(0);
+    resource->setParent(nullptr);
     m_resources.append(resource);
 }
 
diff --git a/src/libs/installer/binaryformatengine.cpp b/src/libs/installer/binaryformatengine.cpp
index 1100bcf0..ec692603 100644
--- a/src/libs/installer/binaryformatengine.cpp
+++ b/src/libs/installer/binaryformatengine.cpp
@@ -81,7 +81,7 @@ namespace QInstaller {
 */
 BinaryFormatEngine::BinaryFormatEngine(const QHash<QByteArray, ResourceCollection> &collections,
         const QString &fileName)
-    : m_resource(0)
+    : m_resource(nullptr)
     , m_collections(collections)
 {
     setFileName(fileName);
diff --git a/src/libs/installer/binaryformatenginehandler.cpp b/src/libs/installer/binaryformatenginehandler.cpp
index fffb248b..88588891 100644
--- a/src/libs/installer/binaryformatenginehandler.cpp
+++ b/src/libs/installer/binaryformatenginehandler.cpp
@@ -48,7 +48,7 @@ namespace QInstaller {
 QAbstractFileEngine *BinaryFormatEngineHandler::create(const QString &fileName) const
 {
     return fileName.startsWith(QLatin1String("installer://"), Qt::CaseInsensitive )
-        ? new BinaryFormatEngine(m_resources, fileName) : 0;
+        ? new BinaryFormatEngine(m_resources, fileName) : nullptr;
 }
 
 /*!
diff --git a/src/libs/installer/component_p.cpp b/src/libs/installer/component_p.cpp
index 5f44f83a..5a5284a4 100644
--- a/src/libs/installer/component_p.cpp
+++ b/src/libs/installer/component_p.cpp
@@ -41,9 +41,9 @@ namespace QInstaller {
 ComponentPrivate::ComponentPrivate(PackageManagerCore *core, Component *qq)
     : q(qq)
     , m_core(core)
-    , m_parentComponent(0)
-    , m_licenseOperation(0)
-    , m_minimumProgressOperation(0)
+    , m_parentComponent(nullptr)
+    , m_licenseOperation(nullptr)
+    , m_minimumProgressOperation(nullptr)
     , m_newlyInstalled (false)
     , m_operationsCreated(false)
     , m_autoCreateOperations(true)
@@ -98,11 +98,11 @@ int ComponentModelHelper::childCount() const
 Component *ComponentModelHelper::childAt(int index) const
 {
     if (index < 0 && index >= childCount())
-        return 0;
+        return nullptr;
 
     if (m_componentPrivate->m_core->virtualComponentsVisible())
-        return m_componentPrivate->m_allChildComponents.value(index, 0);
-    return m_componentPrivate->m_childComponents.value(index, 0);
+        return m_componentPrivate->m_allChildComponents.value(index, nullptr);
+    return m_componentPrivate->m_childComponents.value(index, nullptr);
 }
 
 /*!
diff --git a/src/libs/installer/componentmodel.cpp b/src/libs/installer/componentmodel.cpp
index e729f308..186b37e4 100644
--- a/src/libs/installer/componentmodel.cpp
+++ b/src/libs/installer/componentmodel.cpp
@@ -378,7 +378,7 @@ Component *ComponentModel::componentFromIndex(const QModelIndex &index) const
 {
     if (index.isValid())
         return static_cast<Component*>(index.internalPointer());
-    return 0;
+    return nullptr;
 }
 
 
diff --git a/src/libs/installer/componentselectionpage_p.cpp b/src/libs/installer/componentselectionpage_p.cpp
index 22c478be..9b8c86ef 100644
--- a/src/libs/installer/componentselectionpage_p.cpp
+++ b/src/libs/installer/componentselectionpage_p.cpp
@@ -380,7 +380,7 @@ void ComponentSelectionPagePrivate::customButtonClicked(int which)
     if (QWizard::WizardButton(which) == QWizard::CustomButton2) {
         QString defaultDownloadDirectory =
             QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
-        QStringList fileNames = QFileDialog::getOpenFileNames(NULL,
+        QStringList fileNames = QFileDialog::getOpenFileNames(nullptr,
             ComponentSelectionPage::tr("Open File"),defaultDownloadDirectory,
             QLatin1String("QBSP or 7z Files (*.qbsp *.7z)"));
 
diff --git a/src/libs/installer/copyfiletask.cpp b/src/libs/installer/copyfiletask.cpp
index fdde9b15..50626b68 100644
--- a/src/libs/installer/copyfiletask.cpp
+++ b/src/libs/installer/copyfiletask.cpp
@@ -104,7 +104,7 @@ void CopyFileTask::doTask(QFutureInterface<FileTaskResult> &fi)
         }
 
         observer.addSample(read);
-        observer.timerEvent(NULL);
+        observer.timerEvent(nullptr);
         observer.addBytesTransfered(read);
         observer.addCheckSumData(buffer.data(), read);
 
diff --git a/src/libs/installer/createlocalrepositoryoperation.cpp b/src/libs/installer/createlocalrepositoryoperation.cpp
index 8f6ab2ea..a2f7806a 100644
--- a/src/libs/installer/createlocalrepositoryoperation.cpp
+++ b/src/libs/installer/createlocalrepositoryoperation.cpp
@@ -251,7 +251,7 @@ bool CreateLocalRepositoryOperation::performOperation()
 
         // start to read the binary layout
         ResourceCollectionManager manager;
-        BinaryContent::readBinaryContent(&file, 0, &manager, 0, BinaryContent::MagicCookie);
+        BinaryContent::readBinaryContent(&file, nullptr, &manager, 0, BinaryContent::MagicCookie);
 
         emit progressChanged(0.65);
 
diff --git a/src/libs/installer/createshortcutoperation.cpp b/src/libs/installer/createshortcutoperation.cpp
index 2c2e96ef..bbe3feba 100644
--- a/src/libs/installer/createshortcutoperation.cpp
+++ b/src/libs/installer/createshortcutoperation.cpp
@@ -50,7 +50,7 @@ typedef ITEMIDLIST *PIDLIST_ABSOLUTE;
 struct DeCoInitializer
 {
     DeCoInitializer()
-        : neededCoInit(CoInitialize(NULL) == S_OK)
+        : neededCoInit(CoInitialize(nullptr) == S_OK)
     {
     }
     ~DeCoInitializer()
@@ -100,12 +100,12 @@ static bool createLink(const QString &fileName, const QString &linkName, QString
     // CoInitialize cleanup object
     DeCoInitializer _;
 
-    IUnknown *iunkn = NULL;
+    IUnknown *iunkn = nullptr;
 
     if (fileName.toLower().startsWith(QLatin1String("http:"))
         || fileName.toLower().startsWith(QLatin1String("ftp:"))) {
-        IUniformResourceLocator *iurl = NULL;
-        if (FAILED(CoCreateInstance(CLSID_InternetShortcut, NULL, CLSCTX_INPROC_SERVER,
+        IUniformResourceLocator *iurl = nullptr;
+        if (FAILED(CoCreateInstance(CLSID_InternetShortcut, nullptr, CLSCTX_INPROC_SERVER,
                                     IID_IUniformResourceLocator, (LPVOID*)&iurl))) {
             return false;
         }
diff --git a/src/libs/installer/downloadarchivesjob.cpp b/src/libs/installer/downloadarchivesjob.cpp
index 80c094ae..10278313 100644
--- a/src/libs/installer/downloadarchivesjob.cpp
+++ b/src/libs/installer/downloadarchivesjob.cpp
@@ -49,7 +49,7 @@ using namespace KDUpdater;
 DownloadArchivesJob::DownloadArchivesJob(PackageManagerCore *core)
     : Job(core)
     , m_core(core)
-    , m_downloader(0)
+    , m_downloader(nullptr)
     , m_archivesDownloaded(0)
     , m_archivesToDownloadCount(0)
     , m_canceled(false)
@@ -93,7 +93,7 @@ void DownloadArchivesJob::doStart()
 void DownloadArchivesJob::doCancel()
 {
     m_canceled = true;
-    if (m_downloader != 0)
+    if (m_downloader != nullptr)
         m_downloader->cancelDownload();
 }
 
@@ -130,7 +130,7 @@ void DownloadArchivesJob::fetchNextArchiveHash()
 
 void DownloadArchivesJob::finishedHashDownload()
 {
-    Q_ASSERT(m_downloader != 0);
+    Q_ASSERT(m_downloader != nullptr);
 
     QFile sha1HashFile(m_downloader->downloadedFileName());
     if (sha1HashFile.open(QFile::ReadOnly)) {
@@ -156,7 +156,7 @@ void DownloadArchivesJob::fetchNextArchive()
         return;
     }
 
-    if (m_downloader != 0)
+    if (m_downloader != nullptr)
         m_downloader->deleteLater();
 
     m_downloader = setupDownloader(QString(), m_core->value(scUrlQueryString));
@@ -202,7 +202,7 @@ void DownloadArchivesJob::timerEvent(QTimerEvent *event)
 */
 void DownloadArchivesJob::registerFile()
 {
-    Q_ASSERT(m_downloader != 0);
+    Q_ASSERT(m_downloader != nullptr);
 
     if (m_canceled)
         return;
@@ -259,7 +259,7 @@ void DownloadArchivesJob::finishWithError(const QString &error)
 {
     const FileDownloader *const dl = qobject_cast<const FileDownloader*> (sender());
     const QString msg = tr("Cannot fetch archives: %1\nError while loading %2");
-    if (dl != 0)
+    if (dl != nullptr)
         emitFinishedWithError(QInstaller::DownloadError, msg.arg(error, dl->url().toString()));
     else
         emitFinishedWithError(QInstaller::DownloadError, msg.arg(error, m_downloader->url().toString()));
@@ -267,7 +267,7 @@ void DownloadArchivesJob::finishWithError(const QString &error)
 
 KDUpdater::FileDownloader *DownloadArchivesJob::setupDownloader(const QString &suffix, const QString &queryString)
 {
-    KDUpdater::FileDownloader *downloader = 0;
+    KDUpdater::FileDownloader *downloader = nullptr;
     const QFileInfo fi = QFileInfo(m_archivesToDownload.first().first);
     const Component *const component = m_core->componentByName(PackageManagerCore::checkableName(QFileInfo(fi.path()).fileName()));
     if (component) {
diff --git a/src/libs/installer/elevatedexecuteoperation.cpp b/src/libs/installer/elevatedexecuteoperation.cpp
index 2cc988a4..aa88f039 100644
--- a/src/libs/installer/elevatedexecuteoperation.cpp
+++ b/src/libs/installer/elevatedexecuteoperation.cpp
@@ -43,7 +43,7 @@ class ElevatedExecuteOperation::Private
 public:
     explicit Private(ElevatedExecuteOperation *qq)
         : q(qq)
-        , process(0)
+        , process(nullptr)
         , showStandardError(false)
     {
     }
@@ -221,7 +221,7 @@ bool ElevatedExecuteOperation::Private::run(const QStringList &arguments)
     Q_ASSERT(process);
     Q_ASSERT(process->state() == QProcessWrapper::NotRunning);
     delete process;
-    process = 0;
+    process = nullptr;
 
     return returnValue;
 }
diff --git a/src/libs/installer/environmentvariablesoperation.cpp b/src/libs/installer/environmentvariablesoperation.cpp
index 7a8dbfb5..006ea376 100644
--- a/src/libs/installer/environmentvariablesoperation.cpp
+++ b/src/libs/installer/environmentvariablesoperation.cpp
@@ -83,8 +83,8 @@ bool handleRegExpandSz(const QString &regPath, const QString &name,
     if (res == ERROR_SUCCESS) {
         DWORD dataType;
         DWORD dataSize;
-        res = RegQueryValueEx(handle, reinterpret_cast<const wchar_t *>(name.utf16()), 0,
-                              &dataType, 0, &dataSize);
+        res = RegQueryValueEx(handle, reinterpret_cast<const wchar_t *>(name.utf16()), nullptr,
+                              &dataType, nullptr, &dataSize);
         setAsExpandSZ = (res == ERROR_SUCCESS) && (dataType == REG_EXPAND_SZ);
         if (setAsExpandSZ) {
             RegCloseKey(handle);
diff --git a/src/libs/installer/fileutils.cpp b/src/libs/installer/fileutils.cpp
index c142b55f..590654ed 100644
--- a/src/libs/installer/fileutils.cpp
+++ b/src/libs/installer/fileutils.cpp
@@ -239,7 +239,7 @@ void QInstaller::removeDirectory(const QString &path, bool ignoreErrors)
 class RemoveDirectoryThread : public QThread
 {
 public:
-    explicit RemoveDirectoryThread(const QString &path, bool ignoreErrors = false, QObject *parent = 0)
+    explicit RemoveDirectoryThread(const QString &path, bool ignoreErrors = false, QObject *parent = nullptr)
         : QThread(parent)
         , p(path)
         , ignore(ignoreErrors)
@@ -411,7 +411,7 @@ QString QInstaller::getShortPathName(const QString &name)
 
     // Determine length, then convert.
     const LPCTSTR nameC = reinterpret_cast<LPCTSTR>(name.utf16()); // MinGW
-    const DWORD length = GetShortPathName(nameC, NULL, 0);
+    const DWORD length = GetShortPathName(nameC, nullptr, 0);
     if (length == 0)
         return name;
     QScopedArrayPointer<TCHAR> buffer(new TCHAR[length]);
@@ -427,7 +427,7 @@ QString QInstaller::getLongPathName(const QString &name)
 
     // Determine length, then convert.
     const LPCTSTR nameC = reinterpret_cast<LPCTSTR>(name.utf16()); // MinGW
-    const DWORD length = GetLongPathName(nameC, NULL, 0);
+    const DWORD length = GetLongPathName(nameC, nullptr, 0);
     if (length == 0)
         return name;
     QScopedArrayPointer<TCHAR> buffer(new TCHAR[length]);
diff --git a/src/libs/installer/globalsettingsoperation.cpp b/src/libs/installer/globalsettingsoperation.cpp
index f8f7c112..0840cecf 100644
--- a/src/libs/installer/globalsettingsoperation.cpp
+++ b/src/libs/installer/globalsettingsoperation.cpp
@@ -96,7 +96,7 @@ bool GlobalSettingsOperation::testOperation()
 QSettingsWrapper *GlobalSettingsOperation::setup(QString *key, QString *value, const QStringList &arguments)
 {
     if (!checkArgumentCount(3, 5))
-        return 0;
+        return nullptr;
 
     if (arguments.count() == 5) {
         QSettingsWrapper::Scope scope = QSettingsWrapper::UserScope;
@@ -120,5 +120,5 @@ QSettingsWrapper *GlobalSettingsOperation::setup(QString *key, QString *value, c
         return new QSettingsWrapper(filename, QSettingsWrapper::NativeFormat);
     }
 
-    return 0;
+    return nullptr;
 }
diff --git a/src/libs/installer/init.cpp b/src/libs/installer/init.cpp
index 285c7ebc..8a13119b 100644
--- a/src/libs/installer/init.cpp
+++ b/src/libs/installer/init.cpp
@@ -130,7 +130,7 @@ void messageHandler(QtMsgType type, const QMessageLogContext &context, const QSt
         std::cout << qPrintable(ba) << std::endl;
 
     if (type == QtFatalMsg) {
-        QtMessageHandler oldMsgHandler = qInstallMessageHandler(0);
+        QtMessageHandler oldMsgHandler = qInstallMessageHandler(nullptr);
         qt_message_output(type, context, msg);
         qInstallMessageHandler(oldMsgHandler);
     }
diff --git a/src/libs/installer/keepaliveobject.cpp b/src/libs/installer/keepaliveobject.cpp
index 6f56d782..f3b4e777 100644
--- a/src/libs/installer/keepaliveobject.cpp
+++ b/src/libs/installer/keepaliveobject.cpp
@@ -35,8 +35,8 @@
 namespace QInstaller {
 
 KeepAliveObject::KeepAliveObject()
-    : m_timer(0)
-    , m_socket(0)
+    : m_timer(nullptr)
+    , m_socket(nullptr)
 {
 }
 
diff --git a/src/libs/installer/lib7z_facade.cpp b/src/libs/installer/lib7z_facade.cpp
index f5561af2..b3b3319e 100644
--- a/src/libs/installer/lib7z_facade.cpp
+++ b/src/libs/installer/lib7z_facade.cpp
@@ -64,7 +64,7 @@
 #include <memory>
 
 #ifdef Q_OS_WIN
-HINSTANCE g_hInstance = 0;
+HINSTANCE g_hInstance = nullptr;
 
 # define S_IFMT 00170000
 # define S_IFLNK 0120000
@@ -353,16 +353,16 @@ static quint32 getUInt32Property(IInArchive *archive, int index, int propId, qui
 static QFile::Permissions getPermissions(IInArchive *archive, int index, bool *hasPermissions)
 {
     quint32 attributes = getUInt32Property(archive, index, kpidAttrib, 0);
-    QFile::Permissions permissions = 0;
+    QFile::Permissions permissions = nullptr;
     if (attributes & FILE_ATTRIBUTE_UNIX_EXTENSION) {
-        if (hasPermissions != 0)
+        if (hasPermissions != nullptr)
             *hasPermissions = true;
         // filter the Unix permissions
         attributes = (attributes >> 16) & 0777;
         permissions |= static_cast<QFile::Permissions>((attributes & 0700) << 2);  // owner rights
         permissions |= static_cast<QFile::Permissions>((attributes & 0070) << 1);  // group
         permissions |= static_cast<QFile::Permissions>((attributes & 0007) << 0);  // and world rights
-    } else if (hasPermissions != 0) {
+    } else if (hasPermissions != nullptr) {
         *hasPermissions = false;
     }
     return permissions;
@@ -536,7 +536,7 @@ QVector<File> listArchive(QFileDevice *archive)
                 f.archiveIndex.setY(item);
                 f.path = UString2QString(s).replace(QLatin1Char('\\'), QLatin1Char('/'));
                 Archive_IsItem_Folder(arch, item, f.isDirectory);
-                f.permissions = getPermissions(arch, item, 0);
+                f.permissions = getPermissions(arch, item, nullptr);
                 getDateTimeProperty(arch, item, kpidMTime, &(f.utcTime));
                 f.uncompressedSize = getUInt64Property(arch, item, kpidSize, 0);
                 f.compressedSize = getUInt64Property(arch, item, kpidPackSize, 0);
@@ -579,7 +579,7 @@ STDMETHODIMP ExtractCallback::SetCompleted(const UInt64 *c)
 // CDecoder::CodeSpec extracted content to an output stream.
 STDMETHODIMP ExtractCallback::GetStream(UInt32 index, ISequentialOutStream **outStream, Int32 /*askExtractMode*/)
 {
-    *outStream = 0;
+    *outStream = nullptr;
     if (targetDir.isEmpty())
         return E_FAIL;
 
@@ -790,14 +790,14 @@ HRESULT UpdateCallback::OpenFileError(const wchar_t*, DWORD)
 
 HRESULT UpdateCallback::CryptoGetTextPassword2(Int32 *passwordIsDefined, BSTR *password)
 {
-    *password = 0;
+    *password = nullptr;
     *passwordIsDefined = false;
     return S_OK;
 }
 
 HRESULT UpdateCallback::CryptoGetTextPassword(BSTR *password)
 {
-    *password = 0;
+    *password = nullptr;
     return E_NOTIMPL;
 }
 
diff --git a/src/libs/installer/link.cpp b/src/libs/installer/link.cpp
index ef91828c..62ba06cb 100644
--- a/src/libs/installer/link.cpp
+++ b/src/libs/installer/link.cpp
@@ -84,8 +84,8 @@ public:
         : m_dirHandle(INVALID_HANDLE_VALUE)
     {
         QString normalizedPath = QString(path).replace(QLatin1Char('/'), QLatin1Char('\\'));
-        m_dirHandle = CreateFile((wchar_t*)normalizedPath.utf16(), GENERIC_READ | GENERIC_WRITE, 0, 0,
-            OPEN_EXISTING, FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, 0);
+        m_dirHandle = CreateFile((wchar_t*)normalizedPath.utf16(), GENERIC_READ | GENERIC_WRITE, 0, nullptr,
+            OPEN_EXISTING, FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, nullptr);
 
         if (m_dirHandle == INVALID_HANDLE_VALUE) {
             qWarning() << "Cannot open" << path << ":" << QInstaller::windowsErrorString(GetLastError());
@@ -112,7 +112,7 @@ QString readWindowsSymLink(const QString &path)
     if (dirHandle.handle() != INVALID_HANDLE_VALUE) {
         REPARSE_DATA_BUFFER* reparseStructData = (REPARSE_DATA_BUFFER*)calloc(1, MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
         DWORD bytesReturned = 0;
-        if (::DeviceIoControl(dirHandle.handle(), FSCTL_GET_REPARSE_POINT, 0, 0, reparseStructData,
+        if (::DeviceIoControl(dirHandle.handle(), FSCTL_GET_REPARSE_POINT, nullptr, 0, reparseStructData,
             MAXIMUM_REPARSE_DATA_BUFFER_SIZE, &bytesReturned, 0)) {
                 if (reparseStructData->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT) {
                     int length = reparseStructData->MountPointReparseBuffer.SubstituteNameLength / sizeof(wchar_t);
@@ -170,8 +170,8 @@ Link createJunction(const QString &linkPath, const QString &targetPath)
 
     DWORD bytesReturned;
     if (!::DeviceIoControl(dirHandle.handle(), FSCTL_SET_REPARSE_POINT, reparseStructData,
-        reparseStructData->ReparseDataLength + REPARSE_DATA_BUFFER_HEADER_SIZE, 0, 0,
-        &bytesReturned, 0)) {
+        reparseStructData->ReparseDataLength + REPARSE_DATA_BUFFER_HEADER_SIZE, nullptr, 0,
+        &bytesReturned, nullptr)) {
             qWarning() << "Cannot set the reparse point for" << linkPath << "to" << targetPath
                        << ":" << QInstaller::windowsErrorString(GetLastError());
     }
@@ -191,8 +191,8 @@ bool removeJunction(const QString &path)
 
         DWORD bytesReturned;
         if (!::DeviceIoControl(dirHandle.handle(), FSCTL_DELETE_REPARSE_POINT, reparseStructData,
-            REPARSE_GUID_DATA_BUFFER_HEADER_SIZE, 0, 0,
-            &bytesReturned, 0)) {
+            REPARSE_GUID_DATA_BUFFER_HEADER_SIZE, nullptr, 0,
+            &bytesReturned, nullptr)) {
 
             qWarning() << "Cannot remove the reparse point" << path << ":" << QInstaller::windowsErrorString(GetLastError());
             return false;
diff --git a/src/libs/installer/messageboxhandler.cpp b/src/libs/installer/messageboxhandler.cpp
index fcdee4a5..286009e2 100644
--- a/src/libs/installer/messageboxhandler.cpp
+++ b/src/libs/installer/messageboxhandler.cpp
@@ -107,7 +107,7 @@ using namespace QInstaller;
             Reports non-critical errors.
 */
 
-MessageBoxHandler *MessageBoxHandler::m_instance = 0;
+MessageBoxHandler *MessageBoxHandler::m_instance = nullptr;
 
 MessageBoxHandler::MessageBoxHandler(QObject *parent)
     : QObject(parent)
@@ -120,7 +120,7 @@ MessageBoxHandler::MessageBoxHandler(QObject *parent)
 */
 MessageBoxHandler *MessageBoxHandler::instance()
 {
-    if (m_instance == 0)
+    if (m_instance == nullptr)
         m_instance = new MessageBoxHandler(qApp);
     return m_instance;
 }
@@ -131,8 +131,8 @@ MessageBoxHandler *MessageBoxHandler::instance()
 */
 QWidget *MessageBoxHandler::currentBestSuitParent()
 {
-    if (qobject_cast<QApplication*> (qApp) == 0)
-        return 0;
+    if (qobject_cast<QApplication*> (qApp) == nullptr)
+        return nullptr;
 
     if (qApp->activeModalWidget())
         return qApp->activeModalWidget();
@@ -363,7 +363,7 @@ static QMessageBox::StandardButton showNewMessageBox(QWidget *parent, QMessageBo
 {
     QMessageBox msgBox(icon, title, text, QMessageBox::NoButton, parent);
     QDialogButtonBox *buttonBox = msgBox.findChild<QDialogButtonBox *>();
-    Q_ASSERT(buttonBox != 0);
+    Q_ASSERT(buttonBox != nullptr);
 
     uint mask = QMessageBox::FirstButton;
     while (mask <= QMessageBox::LastButton) {
@@ -404,7 +404,7 @@ QMessageBox::StandardButton MessageBoxHandler::showMessageBox(MessageType messag
     qDebug().nospace() << "Created " << messageTypeHash.value(messageType).toUtf8().constData()
                        << " message box " << identifier << ": " << title << ", " << text;
 
-    if (qobject_cast<QApplication*> (qApp) == 0)
+    if (qobject_cast<QApplication*> (qApp) == nullptr)
         return defaultButton;
 
     if (m_automaticAnswers.contains(identifier))
diff --git a/src/libs/installer/metadatajob.cpp b/src/libs/installer/metadatajob.cpp
index cb157975..e210528e 100644
--- a/src/libs/installer/metadatajob.cpp
+++ b/src/libs/installer/metadatajob.cpp
@@ -53,7 +53,7 @@ static QUrl resolveUrl(const FileTaskResult &result, const QString &url)
 
 MetadataJob::MetadataJob(QObject *parent)
     : Job(parent)
-    , m_core(0)
+    , m_core(nullptr)
     , m_addCompressedPackages(false)
     , m_downloadableChunkSize(1000)
     , m_taskNumber(0)
diff --git a/src/libs/installer/packagemanagercore.cpp b/src/libs/installer/packagemanagercore.cpp
index 0c814288..a80fc608 100644
--- a/src/libs/installer/packagemanagercore.cpp
+++ b/src/libs/installer/packagemanagercore.cpp
@@ -392,7 +392,7 @@ using namespace QInstaller;
 
 
 Q_GLOBAL_STATIC(QMutex, globalModelMutex);
-static QFont *sVirtualComponentsFont = 0;
+static QFont *sVirtualComponentsFont = nullptr;
 Q_GLOBAL_STATIC(QMutex, globalVirtualComponentsFontMutex);
 
 static bool sNoForceInstallation = false;
@@ -697,7 +697,7 @@ void PackageManagerCore::rollBackInstallation()
     // reregister all the undo operations with the new size to the ProgressCoordinator
     foreach (Operation *const operation, d->m_performedOperationsCurrentSession) {
         QObject *const operationObject = dynamic_cast<QObject*> (operation);
-        if (operationObject != 0) {
+        if (operationObject != nullptr) {
             const QMetaObject* const mo = operationObject->metaObject();
             if (mo->indexOfSignal(QMetaObject::normalizedSignature("progressChanged(double)")) > -1) {
                 ProgressCoordinator::instance()->registerPartProgress(operationObject,
@@ -939,7 +939,7 @@ PackageManagerCore::~PackageManagerCore()
 
     QMutexLocker _(globalVirtualComponentsFontMutex());
     delete sVirtualComponentsFont;
-    sVirtualComponentsFont = 0;
+    sVirtualComponentsFont = nullptr;
 }
 
 /* static */
@@ -1549,7 +1549,7 @@ Component *PackageManagerCore::componentByName(const QString &name) const
 Component *PackageManagerCore::componentByName(const QString &name, const QList<Component *> &components)
 {
     if (name.isEmpty())
-        return 0;
+        return nullptr;
 
     QString fixedVersion;
     QString fixedName;
@@ -1561,7 +1561,7 @@ Component *PackageManagerCore::componentByName(const QString &name, const QList<
             return component;
     }
 
-    return 0;
+    return nullptr;
 }
 
 /*!
diff --git a/src/libs/installer/packagemanagercore_p.cpp b/src/libs/installer/packagemanagercore_p.cpp
index ccb80306..d28f11b4 100644
--- a/src/libs/installer/packagemanagercore_p.cpp
+++ b/src/libs/installer/packagemanagercore_p.cpp
@@ -81,7 +81,7 @@ namespace QInstaller {
 class OperationTracer
 {
 public:
-    OperationTracer(Operation *operation) : m_operation(0)
+    OperationTracer(Operation *operation) : m_operation(nullptr)
     {
         // don't create output for that hacky pseudo operation
         if (operation->name() != QLatin1String("MinimumProgress"))
@@ -197,29 +197,29 @@ static void deferredRename(const QString &oldName, const QString &newName, bool
 // -- PackageManagerCorePrivate
 
 PackageManagerCorePrivate::PackageManagerCorePrivate(PackageManagerCore *core)
-    : m_updateFinder(0)
-    , m_compressedFinder(0)
+    : m_updateFinder(nullptr)
+    , m_compressedFinder(nullptr)
     , m_localPackageHub(std::make_shared<LocalPackageHub>())
     , m_core(core)
     , m_updates(false)
     , m_repoFetched(false)
     , m_updateSourcesAdded(false)
     , m_componentsToInstallCalculated(false)
-    , m_componentScriptEngine(0)
-    , m_controlScriptEngine(0)
-    , m_installerCalculator(0)
-    , m_uninstallerCalculator(0)
-    , m_proxyFactory(0)
-    , m_defaultModel(0)
-    , m_updaterModel(0)
-    , m_guiObject(0)
+    , m_componentScriptEngine(nullptr)
+    , m_controlScriptEngine(nullptr)
+    , m_installerCalculator(nullptr)
+    , m_uninstallerCalculator(nullptr)
+    , m_proxyFactory(nullptr)
+    , m_defaultModel(nullptr)
+    , m_updaterModel(nullptr)
+    , m_guiObject(nullptr)
 {
 }
 
 PackageManagerCorePrivate::PackageManagerCorePrivate(PackageManagerCore *core, qint64 magicInstallerMaker,
         const QList<OperationBlob> &performedOperations)
-    : m_updateFinder(0)
-    , m_compressedFinder(0)
+    : m_updateFinder(nullptr)
+    , m_compressedFinder(nullptr)
     , m_localPackageHub(std::make_shared<LocalPackageHub>())
     , m_status(PackageManagerCore::Unfinished)
     , m_needsHardRestart(false)
@@ -234,14 +234,14 @@ PackageManagerCorePrivate::PackageManagerCorePrivate(PackageManagerCore *core, q
     , m_updateSourcesAdded(false)
     , m_magicBinaryMarker(magicInstallerMaker)
     , m_componentsToInstallCalculated(false)
-    , m_componentScriptEngine(0)
-    , m_controlScriptEngine(0)
-    , m_installerCalculator(0)
-    , m_uninstallerCalculator(0)
-    , m_proxyFactory(0)
-    , m_defaultModel(0)
-    , m_updaterModel(0)
-    , m_guiObject(0)
+    , m_componentScriptEngine(nullptr)
+    , m_controlScriptEngine(nullptr)
+    , m_installerCalculator(nullptr)
+    , m_uninstallerCalculator(nullptr)
+    , m_proxyFactory(nullptr)
+    , m_defaultModel(nullptr)
+    , m_updaterModel(nullptr)
+    , m_guiObject(nullptr)
 {
     foreach (const OperationBlob &operation, performedOperations) {
         QScopedPointer<QInstaller::Operation> op(KDUpdater::UpdateOperationFactory::instance()
@@ -363,7 +363,7 @@ bool PackageManagerCorePrivate::buildComponentTree(QHash<QString, Component*> &c
         for (it = components.constBegin(); it != components.constEnd(); ++it) {
             QString id = it.key();
             QInstaller::Component *component = it.value();
-            while (!id.isEmpty() && component->parentComponent() == 0) {
+            while (!id.isEmpty() && component->parentComponent() == nullptr) {
                 id = id.section(QLatin1Char('.'), 0, -2);
                 if (components.contains(id))
                     components[id]->appendComponent(component);
@@ -372,7 +372,7 @@ bool PackageManagerCorePrivate::buildComponentTree(QHash<QString, Component*> &c
 
         // append all components w/o parent to the direct list
         foreach (QInstaller::Component *component, components) {
-            if (component->parentComponent() == 0)
+            if (component->parentComponent() == nullptr)
                 m_core->appendRootComponent(component);
         }
 
@@ -443,7 +443,7 @@ void PackageManagerCorePrivate::cleanUpComponentEnvironment()
     // there could be still some references to already deleted components,
     // so we need to remove the current component script engine
     delete m_componentScriptEngine;
-    m_componentScriptEngine = 0;
+    m_componentScriptEngine = nullptr;
 }
 
 ScriptEngine *PackageManagerCorePrivate::componentScriptEngine() const
@@ -517,7 +517,7 @@ QHash<QString, QPair<Component*, Component*> > &PackageManagerCorePrivate::compo
 void PackageManagerCorePrivate::clearInstallerCalculator()
 {
     delete m_installerCalculator;
-    m_installerCalculator = 0;
+    m_installerCalculator = nullptr;
 }
 
 InstallerCalculator *PackageManagerCorePrivate::installerCalculator() const
@@ -533,7 +533,7 @@ InstallerCalculator *PackageManagerCorePrivate::installerCalculator() const
 void PackageManagerCorePrivate::clearUninstallerCalculator()
 {
     delete m_uninstallerCalculator;
-    m_uninstallerCalculator = 0;
+    m_uninstallerCalculator = nullptr;
 }
 
 UninstallerCalculator *PackageManagerCorePrivate::uninstallerCalculator() const
@@ -685,7 +685,7 @@ Operation *PackageManagerCorePrivate::createOwnedOperation(const QString &type)
 Operation *PackageManagerCorePrivate::takeOwnedOperation(Operation *operation)
 {
     if (!m_ownedOperations.contains(operation))
-        return 0;
+        return nullptr;
 
     m_ownedOperations.removeAll(operation);
     return operation;
@@ -939,7 +939,7 @@ void PackageManagerCorePrivate::connectOperationToInstaller(Operation *const ope
 {
     Q_ASSERT(operationPartSize);
     QObject *const operationObject = dynamic_cast< QObject*> (operation);
-    if (operationObject != 0) {
+    if (operationObject != nullptr) {
         const QMetaObject *const mo = operationObject->metaObject();
         if (mo->indexOfSignal(QMetaObject::normalizedSignature("outputTextChanged(QString)")) > -1) {
             connect(operationObject, SIGNAL(outputTextChanged(QString)), ProgressCoordinator::instance(),
@@ -1653,7 +1653,7 @@ bool PackageManagerCorePrivate::runPackageUpdater()
         // build a list of undo operations based on the checked state of the component
         foreach (Operation *operation, performedOperationsOld) {
             const QString &name = operation->value(QLatin1String("component")).toString();
-            Component *component = componentsByName.value(name, 0);
+            Component *component = componentsByName.value(name, nullptr);
             if (!component)
                 component = m_core->componentByName(PackageManagerCore::checkableName(name));
             if (component)
@@ -2374,7 +2374,7 @@ void PackageManagerCorePrivate::storeCheckState()
 void PackageManagerCorePrivate::connectOperationCallMethodRequest(Operation *const operation)
 {
     QObject *const operationObject = dynamic_cast<QObject *> (operation);
-    if (operationObject != 0) {
+    if (operationObject != nullptr) {
         const QMetaObject *const mo = operationObject->metaObject();
         if (mo->indexOfSignal(QMetaObject::normalizedSignature("requestBlockingExecution(QString)")) > -1) {
             connect(operationObject, SIGNAL(requestBlockingExecution(QString)),
@@ -2417,7 +2417,7 @@ OperationList PackageManagerCorePrivate::sortOperationsBasedOnComponentDependenc
 void PackageManagerCorePrivate::handleMethodInvocationRequest(const QString &invokableMethodName)
 {
     QObject *obj = QObject::sender();
-    if (obj != 0)
+    if (obj != nullptr)
         QMetaObject::invokeMethod(obj, qPrintable(invokableMethodName));
 }
 
diff --git a/src/libs/installer/packagemanagercoredata.cpp b/src/libs/installer/packagemanagercoredata.cpp
index 3b35794c..ebacbf93 100644
--- a/src/libs/installer/packagemanagercoredata.cpp
+++ b/src/libs/installer/packagemanagercoredata.cpp
@@ -108,7 +108,7 @@ void PackageManagerCoreData::setDynamicPredefinedVariables()
     QString dir = QLatin1String("/opt");
 #ifdef Q_OS_WIN
     TCHAR buffer[MAX_PATH + 1] = { 0 };
-    SHGetFolderPath(0, CSIDL_PROGRAM_FILES, 0, 0, buffer);
+    SHGetFolderPath(nullptr, CSIDL_PROGRAM_FILES, nullptr, 0, buffer);
     dir = QString::fromWCharArray(buffer);
 #elif defined (Q_OS_OSX)
     dir = QStandardPaths::standardLocations(QStandardPaths::ApplicationsLocation).value(0);
diff --git a/src/libs/installer/packagemanagergui.cpp b/src/libs/installer/packagemanagergui.cpp
index 0e257785..3fd35a5c 100644
--- a/src/libs/installer/packagemanagergui.cpp
+++ b/src/libs/installer/packagemanagergui.cpp
@@ -95,7 +95,7 @@ class DynamicInstallerPage : public PackageManagerPage
     Q_PROPERTY(bool complete READ isComplete WRITE setComplete)
 
 public:
-    explicit DynamicInstallerPage(QWidget *widget, PackageManagerCore *core = 0)
+    explicit DynamicInstallerPage(QWidget *widget, PackageManagerCore *core = nullptr)
         : PackageManagerPage(core)
         , m_widget(widget)
     {
@@ -398,7 +398,7 @@ void PackageManagerGui::setMaxSize()
 */
 PackageManagerGui::~PackageManagerGui()
 {
-    m_core->setGuiObject(0);
+    m_core->setGuiObject(nullptr);
     delete d;
 }
 
@@ -665,7 +665,7 @@ void PackageManagerGui::wizardPageInsertionRequested(QWidget *widget,
     wizardPageRemovalRequested(widget);
 
     int pageId = static_cast<int>(page) - 1;
-    while (QWizard::page(pageId) != 0)
+    while (QWizard::page(pageId) != nullptr)
         --pageId;
 
     // add it
@@ -679,7 +679,7 @@ void PackageManagerGui::wizardPageRemovalRequested(QWidget *widget)
 {
     foreach (int pageId, pageIds()) {
         DynamicInstallerPage *const dynamicPage = qobject_cast<DynamicInstallerPage*>(page(pageId));
-        if (dynamicPage == 0)
+        if (dynamicPage == nullptr)
             continue;
         if (dynamicPage->widget() != widget)
             continue;
@@ -710,7 +710,7 @@ void PackageManagerGui::wizardWidgetInsertionRequested(QWidget *widget,
 void PackageManagerGui::wizardWidgetRemovalRequested(QWidget *widget)
 {
     Q_ASSERT(widget);
-    widget->setParent(0);
+    widget->setParent(nullptr);
     packageManagerCore()->controlScriptEngine()->removeFromGlobalObject(widget);
     packageManagerCore()->componentScriptEngine()->removeFromGlobalObject(widget);
 }
@@ -721,9 +721,9 @@ void PackageManagerGui::wizardWidgetRemovalRequested(QWidget *widget)
 */
 void PackageManagerGui::wizardPageVisibilityChangeRequested(bool visible, int p)
 {
-    if (visible && page(p) == 0) {
+    if (visible && page(p) == nullptr) {
         setPage(p, d->m_defaultPages[p]);
-    } else if (!visible && page(p) != 0) {
+    } else if (!visible && page(p) != nullptr) {
         d->m_defaultPages[p] = page(p);
         removePage(p);
     }
@@ -753,7 +753,7 @@ QWidget *PackageManagerGui::pageByObjectName(const QString &name) const
             return p;
     }
     qWarning() << "No page found for object name" << name;
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -781,7 +781,7 @@ QWidget *PackageManagerGui::pageWidgetByObjectName(const QString &name) const
         return p;
     }
     qWarning() << "No page found for object name" << name;
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -1057,7 +1057,7 @@ PackageManagerPage::PackageManagerPage(PackageManagerCore *core)
     : m_complete(true)
     , m_needsSettingsButton(false)
     , m_core(core)
-    , validatorComponent(0)
+    , validatorComponent(nullptr)
 {
     if (!m_core->settings().titleColor().isEmpty()) {
         m_titleColor = m_core->settings().titleColor();
@@ -1192,8 +1192,8 @@ bool PackageManagerPage::validatePage()
 void PackageManagerPage::insertWidget(QWidget *widget, const QString &siblingName, int offset)
 {
     QWidget *sibling = findChild<QWidget *>(siblingName);
-    QWidget *parent = sibling ? sibling->parentWidget() : 0;
-    QLayout *layout = parent ? parent->layout() : 0;
+    QWidget *parent = sibling ? sibling->parentWidget() : nullptr;
+    QLayout *layout = parent ? parent->layout() : nullptr;
     QBoxLayout *blayout = qobject_cast<QBoxLayout *>(layout);
 
     if (blayout) {
@@ -1264,13 +1264,13 @@ IntroductionPage::IntroductionPage(PackageManagerCore *core)
     : PackageManagerPage(core)
     , m_updatesFetched(false)
     , m_allPackagesFetched(false)
-    , m_label(0)
-    , m_msgLabel(0)
-    , m_errorLabel(0)
-    , m_progressBar(0)
-    , m_packageManager(0)
-    , m_updateComponents(0)
-    , m_removeAllComponents(0)
+    , m_label(nullptr)
+    , m_msgLabel(nullptr)
+    , m_errorLabel(nullptr)
+    , m_progressBar(nullptr)
+    , m_packageManager(nullptr)
+    , m_updateComponents(nullptr)
+    , m_removeAllComponents(nullptr)
 {
     setObjectName(QLatin1String("IntroductionPage"));
     setColoredTitle(tr("Setup - %1").arg(productName()));
@@ -1347,7 +1347,7 @@ IntroductionPage::IntroductionPage(PackageManagerCore *core)
         connect(core, &PackageManagerCore::metaJobProgress,
                 m_taskButton->progress(), &QWinTaskbarProgress::setValue);
     } else {
-        m_taskButton = 0;
+        m_taskButton = nullptr;
     }
 #endif
 }
@@ -2802,7 +2802,7 @@ void PerformInstallationPage::toggleDetailsWereChanged()
 */
 FinishedPage::FinishedPage(PackageManagerCore *core)
     : PackageManagerPage(core)
-    , m_commitButton(0)
+    , m_commitButton(nullptr)
 {
     setObjectName(QLatin1String("FinishedPage"));
     setColoredTitle(tr("Completing the %1 Wizard").arg(productName()));
@@ -2835,7 +2835,7 @@ void FinishedPage::entering()
 
     if (m_commitButton) {
         disconnect(m_commitButton, &QAbstractButton::clicked, this, &FinishedPage::handleFinishClicked);
-        m_commitButton = 0;
+        m_commitButton = nullptr;
     }
 
     if (packageManagerCore()->isMaintainer()) {
diff --git a/src/libs/installer/performinstallationform.cpp b/src/libs/installer/performinstallationform.cpp
index b66cbb5b..28506bcd 100644
--- a/src/libs/installer/performinstallationform.cpp
+++ b/src/libs/installer/performinstallationform.cpp
@@ -76,18 +76,18 @@ using namespace QInstaller;
 */
 PerformInstallationForm::PerformInstallationForm(QObject *parent)
     : QObject(parent)
-    , m_progressBar(0)
-    , m_progressLabel(0)
-    , m_detailsButton(0)
-    , m_detailsBrowser(0)
-    , m_updateTimer(0)
+    , m_progressBar(nullptr)
+    , m_progressLabel(nullptr)
+    , m_detailsButton(nullptr)
+    , m_detailsBrowser(nullptr)
+    , m_updateTimer(nullptr)
 {
 #ifdef Q_OS_WIN
     if (QSysInfo::windowsVersion() >= QSysInfo::WV_WINDOWS7) {
         m_taskButton = new QWinTaskbarButton(this);
         m_taskButton->progress()->setVisible(true);
     } else {
-        m_taskButton = 0;
+        m_taskButton = nullptr;
     }
 #endif
 }
diff --git a/src/libs/installer/progresscoordinator.cpp b/src/libs/installer/progresscoordinator.cpp
index 1a3f4e33..d3fbd764 100644
--- a/src/libs/installer/progresscoordinator.cpp
+++ b/src/libs/installer/progresscoordinator.cpp
@@ -59,8 +59,8 @@ ProgressCoordinator::~ProgressCoordinator()
 
 ProgressCoordinator *ProgressCoordinator::instance()
 {
-    static ProgressCoordinator *instance = 0;
-    if (instance == 0)
+    static ProgressCoordinator *instance =nullptr;
+    if (instance == nullptr)
         instance = new ProgressCoordinator(qApp);
     return instance;
 }
diff --git a/src/libs/installer/qprocesswrapper.cpp b/src/libs/installer/qprocesswrapper.cpp
index 1bf60ead..7cd5ad7d 100644
--- a/src/libs/installer/qprocesswrapper.cpp
+++ b/src/libs/installer/qprocesswrapper.cpp
@@ -109,7 +109,7 @@ bool QProcessWrapper::startDetached(const QString &program, const QStringList &a
         const QPair<bool, qint64> result =
             w.callRemoteMethod<QPair<bool, qint64> >(QLatin1String(Protocol::QProcessStartDetached),
                 program, arguments, workingDirectory);
-        if (pid != 0)
+        if (pid != nullptr)
             *pid = result.second;
         w.processSignals();
         return result.first;
diff --git a/src/libs/installer/registerfiletypeoperation.cpp b/src/libs/installer/registerfiletypeoperation.cpp
index bcae422d..27794652 100644
--- a/src/libs/installer/registerfiletypeoperation.cpp
+++ b/src/libs/installer/registerfiletypeoperation.cpp
@@ -133,7 +133,7 @@ bool RegisterFileTypeOperation::performOperation()
     setValue(QLatin1String("newType"), readHive(&settings, classesFileType));
 
     // force the shell to invalidate its cache
-    SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
+    SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, nullptr, nullptr);
 
     return true;
 #else
@@ -192,7 +192,7 @@ bool RegisterFileTypeOperation::undoOperation()
     settings.remove(classesApplications);
 
     // force the shell to invalidate its cache
-    SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
+    SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, nullptr, nullptr);
 
     return true;
 #else
diff --git a/src/libs/installer/remoteclient.cpp b/src/libs/installer/remoteclient.cpp
index c6f5e535..e208620c 100644
--- a/src/libs/installer/remoteclient.cpp
+++ b/src/libs/installer/remoteclient.cpp
@@ -31,7 +31,7 @@
 
 namespace QInstaller {
 
-RemoteClient *RemoteClient::s_instance = 0;
+RemoteClient *RemoteClient::s_instance = nullptr;
 
 RemoteClient::RemoteClient()
     : d_ptr(new RemoteClientPrivate(this))
@@ -88,7 +88,7 @@ void RemoteClient::shutdown()
 void RemoteClient::destroy()
 {
     delete s_instance;
-    s_instance = 0;
+    s_instance = nullptr;
 }
 
 bool RemoteClient::isActive() const
diff --git a/src/libs/installer/remoteobject.cpp b/src/libs/installer/remoteobject.cpp
index 49c11161..c9c82229 100644
--- a/src/libs/installer/remoteobject.cpp
+++ b/src/libs/installer/remoteobject.cpp
@@ -39,9 +39,9 @@ namespace QInstaller {
 
 RemoteObject::RemoteObject(const QString &wrappedType, QObject *parent)
     : QObject(parent)
-    , dummy(0)
+    , dummy(nullptr)
     , m_type(wrappedType)
-    , m_socket(0)
+    , m_socket(nullptr)
 {
     Q_ASSERT_X(!m_type.isEmpty(), Q_FUNC_INFO, "The wrapped Qt type needs to be passed as "
         "argument and cannot be empty.");
@@ -78,7 +78,7 @@ bool RemoteObject::authorize()
             return true;
     }
     delete m_socket;
-    m_socket = 0;
+    m_socket = nullptr;
     return false;
 }
 
diff --git a/src/libs/installer/remoteserverconnection.cpp b/src/libs/installer/remoteserverconnection.cpp
index 61bacc0c..5a47bc47 100644
--- a/src/libs/installer/remoteserverconnection.cpp
+++ b/src/libs/installer/remoteserverconnection.cpp
@@ -44,10 +44,10 @@ RemoteServerConnection::RemoteServerConnection(qintptr socketDescriptor, const Q
                                                QObject *parent)
     : QThread(parent)
     , m_socketDescriptor(socketDescriptor)
-    , m_process(0)
-    , m_engine(0)
+    , m_process(nullptr)
+    , m_engine(nullptr)
     , m_authorizationKey(key)
-    , m_signalReceiver(0)
+    , m_signalReceiver(nullptr)
 {
     setObjectName(QString::fromLatin1("RemoteServerConnection(%1)").arg(socketDescriptor));
 }
@@ -146,10 +146,10 @@ void RemoteServerConnection::run()
                 } else if (type == QLatin1String(Protocol::QProcess)) {
                     m_signalReceiver->m_receivedSignals.clear();
                     m_process->deleteLater();
-                    m_process = 0;
+                    m_process = nullptr;
                 } else if (type == QLatin1String(Protocol::QAbstractFileEngine)) {
                     delete m_engine;
-                    m_engine = 0;
+                    m_engine = nullptr;
                 }
                 return;
             }
diff --git a/src/libs/installer/scriptengine.cpp b/src/libs/installer/scriptengine.cpp
index bea1e8e7..994fa140 100644
--- a/src/libs/installer/scriptengine.cpp
+++ b/src/libs/installer/scriptengine.cpp
@@ -97,7 +97,7 @@ void QDesktopServicesProxy::findRecursion(const QString &path, const QString &pa
 GuiProxy::GuiProxy(ScriptEngine *engine, QObject *parent) :
     QObject(parent),
     m_engine(engine),
-    m_gui(0)
+    m_gui(nullptr)
 {
 }
 
diff --git a/src/libs/installer/settings.cpp b/src/libs/installer/settings.cpp
index 21bbe8b4..bc9024ac 100644
--- a/src/libs/installer/settings.cpp
+++ b/src/libs/installer/settings.cpp
@@ -135,7 +135,7 @@ static QStringList readArgumentAttributes(QXmlStreamReader &reader, Settings::Pa
     return arguments;
 }
 
-static QSet<Repository> readRepositories(QXmlStreamReader &reader, bool isDefault, Settings::ParseMode parseMode, QString *displayName = 0)
+static QSet<Repository> readRepositories(QXmlStreamReader &reader, bool isDefault, Settings::ParseMode parseMode, QString *displayName = nullptr)
 {
     qDebug()<<__FUNCTION__;
     QSet<Repository> set;
diff --git a/src/libs/installer/sysinfo_win.cpp b/src/libs/installer/sysinfo_win.cpp
index 69c1744c..508ce7a6 100644
--- a/src/libs/installer/sysinfo_win.cpp
+++ b/src/libs/installer/sysinfo_win.cpp
@@ -57,7 +57,7 @@ VolumeInfo updateVolumeSizeInformation(const VolumeInfo &info)
     ULARGE_INTEGER freeBytesPerUser;
 
     VolumeInfo update = info;
-    if (GetDiskFreeSpaceExA(qPrintable(info.volumeDescriptor()), &freeBytesPerUser, &bytesTotal, NULL)) {
+    if (GetDiskFreeSpaceExA(qPrintable(info.volumeDescriptor()), &freeBytesPerUser, &bytesTotal, nullptr)) {
         update.setSize(bytesTotal.QuadPart);
         update.setAvailableSize(freeBytesPerUser.QuadPart);
     }
@@ -197,7 +197,7 @@ bool killProcess(const ProcessInfo &process, int msecs)
 
     // If we can't open the process with PROCESS_TERMINATE rights, then we give up immediately.
     HANDLE hProc = OpenProcess(SYNCHRONIZE | PROCESS_TERMINATE, false, process.id);
-    if (hProc == 0)
+    if (hProc == nullptr)
         return false;
 
     // TerminateAppEnum() posts WM_CLOSE to all windows whose PID matches your process's.
@@ -212,4 +212,4 @@ bool killProcess(const ProcessInfo &process, int msecs)
     return returnValue;
 }
 
-}
\ No newline at end of file
+}
diff --git a/src/libs/installer/unziptask.cpp b/src/libs/installer/unziptask.cpp
index f1f0dd0a..e0fb5449 100644
--- a/src/libs/installer/unziptask.cpp
+++ b/src/libs/installer/unziptask.cpp
@@ -89,7 +89,7 @@ public:
             m_futureInterface->waitForResume();
 
         COM_TRY_BEGIN
-        *outStream = 0;
+        *outStream = nullptr;
         m_currentIndex = index;
         if (askExtractMode != NArchive::NExtract::NAskMode::kExtract)
             return E_FAIL;
@@ -160,8 +160,8 @@ public:
         const bool writeCreationTime = GetTime(kpidCTime, &creationTime);
         const bool writeModificationTime = GetTime(kpidMTime, &modificationTime);
 
-        m_outFileStream->SetTime((writeCreationTime ? &creationTime : NULL),
-            (writeAccessTime ? &accessTime : NULL), (writeModificationTime ? &modificationTime : NULL));
+        m_outFileStream->SetTime((writeCreationTime ? &creationTime : nullptr),
+            (writeAccessTime ? &accessTime : nullptr), (writeModificationTime ? &modificationTime : nullptr));
 
         m_totalUnpacked += m_outFileStream->ProcessedSize;
         m_outFileStream->Close();
diff --git a/src/libs/installer/utils.cpp b/src/libs/installer/utils.cpp
index a11ac774..e4e3212a 100644
--- a/src/libs/installer/utils.cpp
+++ b/src/libs/installer/utils.cpp
@@ -85,16 +85,16 @@ bool QInstaller::startDetached(const QString &program, const QStringList &argume
     bool success = false;
 #ifdef Q_OS_WIN
     PROCESS_INFORMATION pinfo;
-    STARTUPINFOW startupInfo = { sizeof(STARTUPINFO), 0, 0, 0,
+    STARTUPINFOW startupInfo = { sizeof(STARTUPINFO), nullptr, nullptr, nullptr,
         static_cast<ulong>(CW_USEDEFAULT), static_cast<ulong>(CW_USEDEFAULT),
         static_cast<ulong>(CW_USEDEFAULT), static_cast<ulong>(CW_USEDEFAULT),
-        0, 0, 0, STARTF_USESHOWWINDOW, SW_HIDE, 0, 0, 0, 0, 0
+        0, 0, 0, STARTF_USESHOWWINDOW, SW_HIDE, 0, nullptr, nullptr, nullptr, nullptr
     };  // That's the difference over QProcess::startDetached(): STARTF_USESHOWWINDOW, SW_HIDE.
 
     const QString commandline = QInstaller::createCommandline(program, arguments);
-    if (CreateProcessW(0, (wchar_t*) commandline.utf16(),
-        0, 0, false, CREATE_UNICODE_ENVIRONMENT | CREATE_NEW_CONSOLE,
-        0, workingDirectory.isEmpty() ? 0 : (wchar_t*) workingDirectory.utf16(),
+    if (CreateProcessW(nullptr, (wchar_t*) commandline.utf16(),
+        nullptr, nullptr, false, CREATE_UNICODE_ENVIRONMENT | CREATE_NEW_CONSOLE,
+        nullptr, workingDirectory.isEmpty() ? nullptr : (wchar_t*) workingDirectory.utf16(),
         &startupInfo, &pinfo)) {
         success = true;
         CloseHandle(pinfo.hThread);
@@ -244,7 +244,7 @@ bool QInstaller::VerboseWriter::flush(VerboseWriterOutput *output)
 
     if (output->write(logFileName, QIODevice::ReadWrite | QIODevice::Append | QIODevice::Text, buffer.data())) {
         preFileBuffer.close();
-        stream.setDevice(0);
+        stream.setDevice(nullptr);
         return true;
     }
     return false;
@@ -341,7 +341,7 @@ static QVector<Char*> qWinCmdLine(Char *cmdParam, int length, int &argc)
             argv[argc++] = start;
         }
     }
-    argv[argc] = 0;
+    argv[argc] = nullptr;
 
     return argv;
 }
@@ -419,14 +419,14 @@ QString QInstaller::createCommandline(const QString &program, const QStringList
 QString QInstaller::windowsErrorString(int errorCode)
 {
     QString ret;
-    wchar_t *string = 0;
+    wchar_t *string = nullptr;
     FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
-        NULL,
+        nullptr,
         errorCode,
         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
         (LPWSTR) &string,
         0,
-        NULL);
+        nullptr);
     ret = QString::fromWCharArray(string);
     LocalFree((HLOCAL) string);
 
diff --git a/src/sdk/console_win.cpp b/src/sdk/console_win.cpp
index baca7eda..f3226bc6 100644
--- a/src/sdk/console_win.cpp
+++ b/src/sdk/console_win.cpp
@@ -46,7 +46,7 @@
 
 static bool isRedirected(HANDLE stdHandle)
 {
-    if (stdHandle == NULL) // launched from GUI
+    if (stdHandle == nullptr) // launched from GUI
         return false;
     DWORD fileType = GetFileType(stdHandle);
     if (fileType == FILE_TYPE_UNKNOWN) {
@@ -73,8 +73,8 @@ static bool isRedirected(HANDLE stdHandle)
  * (e.g. into a file), Console does not interfere.
  */
 Console::Console() :
-    m_oldCout(0),
-    m_oldCerr(0)
+    m_oldCout(nullptr),
+    m_oldCerr(nullptr)
 {
     bool isCoutRedirected = isRedirected(GetStdHandle(STD_OUTPUT_HANDLE));
     bool isCerrRedirected = isRedirected(GetStdHandle(STD_ERROR_HANDLE));
@@ -97,7 +97,7 @@ Console::Console() :
                                | ENABLE_EXTENDED_FLAGS);
 # ifndef Q_CC_MINGW
             HMENU systemMenu = GetSystemMenu(GetConsoleWindow(), FALSE);
-            if (systemMenu != NULL)
+            if (systemMenu != nullptr)
                 RemoveMenu(systemMenu, SC_CLOSE, MF_BYCOMMAND);
             DrawMenuBar(GetConsoleWindow());
 # endif
diff --git a/src/sdk/installerbase.cpp b/src/sdk/installerbase.cpp
index 872600f1..8ec14295 100644
--- a/src/sdk/installerbase.cpp
+++ b/src/sdk/installerbase.cpp
@@ -64,7 +64,7 @@
 
 InstallerBase::InstallerBase(int &argc, char *argv[])
     : SDKApp<QApplication>(argc, argv)
-    , m_core(0)
+    , m_core(nullptr)
 {
     QInstaller::init(); // register custom operations
 }
@@ -87,7 +87,7 @@ int InstallerBase::run()
         // just silently ignore the fact that we could not create the lock file
         // and check the running processes.
         if (runCheck.isRunning(RunOnceChecker::ConditionFlag::ProcessList)) {
-            QInstaller::MessageBoxHandler::information(0, QLatin1String("AlreadyRunning"),
+            QInstaller::MessageBoxHandler::information(nullptr, QLatin1String("AlreadyRunning"),
                 tr("Waiting for %1").arg(qAppName()),
                 tr("Another %1 instance is already running. Wait "
                 "until it finishes, close it, or restart your system.").arg(qAppName()));
@@ -304,7 +304,7 @@ int InstallerBase::run()
     }
     else {
         //create the wizard GUI
-        TabController controller(0);
+        TabController controller(nullptr);
         controller.setManager(m_core);
         controller.setControlScript(controlScript);
         if (m_core->isInstaller())
diff --git a/src/sdk/installerbasecommons.cpp b/src/sdk/installerbasecommons.cpp
index 1a335f66..bd1c4cdf 100644
--- a/src/sdk/installerbasecommons.cpp
+++ b/src/sdk/installerbasecommons.cpp
@@ -39,7 +39,7 @@ using namespace QInstaller;
 // -- InstallerGui
 
 InstallerGui::InstallerGui(PackageManagerCore *core)
-    : PackageManagerGui(core, 0)
+    : PackageManagerGui(core, nullptr)
 {
     ProductKeyCheck *checker = ProductKeyCheck::instance();
     foreach (const int id, checker->registeredPages()) {
@@ -71,7 +71,7 @@ InstallerGui::InstallerGui(PackageManagerCore *core)
 // -- MaintenanceGui
 
 MaintenanceGui::MaintenanceGui(PackageManagerCore *core)
-    : PackageManagerGui(core, 0)
+    : PackageManagerGui(core, nullptr)
 {
     ProductKeyCheck *checker = ProductKeyCheck::instance();
     foreach (const int id, checker->registeredPages()) {
diff --git a/src/sdk/settingsdialog.cpp b/src/sdk/settingsdialog.cpp
index 7e2ba31b..7b05f71c 100644
--- a/src/sdk/settingsdialog.cpp
+++ b/src/sdk/settingsdialog.cpp
@@ -67,7 +67,7 @@ QWidget *PasswordDelegate::createEditor(QWidget *parent, const QStyleOptionViewI
     const
 {
     if (m_disabledEditor)
-        return 0;
+        return nullptr;
 
     QLineEdit *lineEdit = new QLineEdit(parent);
     lineEdit->setEchoMode(m_showPasswords ? QLineEdit::Normal : QLineEdit::Password);
diff --git a/src/sdk/tabcontroller.cpp b/src/sdk/tabcontroller.cpp
index dc4549d5..75eb081c 100644
--- a/src/sdk/tabcontroller.cpp
+++ b/src/sdk/tabcontroller.cpp
@@ -61,8 +61,8 @@ public:
 TabController::Private::Private()
     : m_init(false)
     , m_networkSettingsChanged(false)
-    , m_gui(0)
-    , m_core(0)
+    , m_gui(nullptr)
+    , m_core(nullptr)
 {
 }
 
diff --git a/tests/auto/installer/binaryformat/tst_binaryformat.cpp b/tests/auto/installer/binaryformat/tst_binaryformat.cpp
index 57f2a37e..6b40452c 100644
--- a/tests/auto/installer/binaryformat/tst_binaryformat.cpp
+++ b/tests/auto/installer/binaryformat/tst_binaryformat.cpp
@@ -52,7 +52,7 @@ class TestOperation : public KDUpdater::UpdateOperation
 {
 public:
     TestOperation(const QString &name)
-        : KDUpdater::UpdateOperation(0)
+        : KDUpdater::UpdateOperation(nullptr)
     { setName(name); }
 
     virtual void backup() {}
diff --git a/tests/auto/installer/consumeoutputoperationtest/tst_consumeoutputoperationtest.cpp b/tests/auto/installer/consumeoutputoperationtest/tst_consumeoutputoperationtest.cpp
index 885aca81..8250a7dd 100644
--- a/tests/auto/installer/consumeoutputoperationtest/tst_consumeoutputoperationtest.cpp
+++ b/tests/auto/installer/consumeoutputoperationtest/tst_consumeoutputoperationtest.cpp
@@ -62,7 +62,7 @@ private slots:
 
     void testMissingArguments()
     {
-        ConsumeOutputOperation operation(0);
+        ConsumeOutputOperation operation(nullptr);
 
         QVERIFY(operation.testOperation());
         QVERIFY(!operation.performOperation());
diff --git a/tests/auto/installer/extractarchiveoperationtest/tst_extractarchiveoperationtest.cpp b/tests/auto/installer/extractarchiveoperationtest/tst_extractarchiveoperationtest.cpp
index 40af0d49..a5f38e0e 100644
--- a/tests/auto/installer/extractarchiveoperationtest/tst_extractarchiveoperationtest.cpp
+++ b/tests/auto/installer/extractarchiveoperationtest/tst_extractarchiveoperationtest.cpp
@@ -48,7 +48,7 @@ private slots:
 
     void testMissingArguments()
     {
-        ExtractArchiveOperation op(0);
+        ExtractArchiveOperation op(nullptr);
 
         QVERIFY(op.testOperation());
         QVERIFY(!op.performOperation());
@@ -62,7 +62,7 @@ private slots:
 
     void testExtractOperationValidFile()
     {
-        ExtractArchiveOperation op(0);
+        ExtractArchiveOperation op(nullptr);
         op.setArguments(QStringList() << ":///data/valid.7z" << QDir::tempPath());
 
         QVERIFY(op.testOperation());
@@ -72,7 +72,7 @@ private slots:
 
     void testExtractOperationInvalidFile()
     {
-        ExtractArchiveOperation op(0);
+        ExtractArchiveOperation op(nullptr);
         op.setArguments(QStringList() << ":///data/invalid.7z" << QDir::tempPath());
 
         QVERIFY(op.testOperation());
diff --git a/tests/auto/installer/fakestopprocessforupdateoperation/tst_fakestopprocessforupdateoperation.cpp b/tests/auto/installer/fakestopprocessforupdateoperation/tst_fakestopprocessforupdateoperation.cpp
index 583bb26f..e72c71ed 100644
--- a/tests/auto/installer/fakestopprocessforupdateoperation/tst_fakestopprocessforupdateoperation.cpp
+++ b/tests/auto/installer/fakestopprocessforupdateoperation/tst_fakestopprocessforupdateoperation.cpp
@@ -28,7 +28,7 @@ private slots:
 
     void testMissingPackageManagerCore()
     {
-        FakeStopProcessForUpdateOperation op(0);
+        FakeStopProcessForUpdateOperation op(nullptr);
         op.setArguments(QStringList() << QFileInfo(QCoreApplication::applicationFilePath()).fileName());
 
         QVERIFY(op.testOperation());
diff --git a/tests/auto/installer/settingsoperation/tst_settingsoperation.cpp b/tests/auto/installer/settingsoperation/tst_settingsoperation.cpp
index 7530910b..ced0e6f3 100644
--- a/tests/auto/installer/settingsoperation/tst_settingsoperation.cpp
+++ b/tests/auto/installer/settingsoperation/tst_settingsoperation.cpp
@@ -60,7 +60,7 @@ private slots:
 
     void testWrongArguments()
     {
-        SettingsOperation noArgumentsOperation(0);
+        SettingsOperation noArgumentsOperation(nullptr);
 
         QVERIFY(noArgumentsOperation.testOperation());
 
@@ -76,7 +76,7 @@ private slots:
         // same for undo
         QCOMPARE(noArgumentsOperation.undoOperation(), false);
 
-        SettingsOperation wrongMethodArgumentOperation(0);
+        SettingsOperation wrongMethodArgumentOperation(nullptr);
         wrongMethodArgumentOperation.setArguments(QStringList() << "path=first" << "method=second"
             << "key=third" << "value=fourth");
 
@@ -109,7 +109,7 @@ private slots:
             testSettings.setValue(key, value);
         }
 
-        SettingsOperation settingsOperation(0);
+        SettingsOperation settingsOperation(nullptr);
         settingsOperation.setArguments(QStringList() << QString("path=%1").arg(testFilePath) <<
             "method=set" << QString("key=%1").arg(key) << QString("value=%1").arg(value));
         settingsOperation.backup();
@@ -127,7 +127,7 @@ private slots:
         const QString key = "key";
         const QString value = "value";
 
-        SettingsOperation settingsOperation(0);
+        SettingsOperation settingsOperation(nullptr);
         settingsOperation.setArguments(QStringList() << QString("path=%1").arg(testFilePath) <<
             "method=set" << QString("key=%1").arg(key) << QString("value=%1").arg(value));
         settingsOperation.backup();
@@ -154,7 +154,7 @@ private slots:
         }
         QCOMPARE(testValueString.isEmpty(), false);
 
-        SettingsOperation settingsOperation(0);
+        SettingsOperation settingsOperation(nullptr);
         settingsOperation.setArguments(QStringList() <<  QString("path=%1").arg(testFilePath) <<
             "method=remove" << QString("key=%1").arg(key));
         settingsOperation.backup();
@@ -189,10 +189,10 @@ private slots:
         testFile.close();
 
         QMap<QString, SettingsOperation*> testSettingsOperationMap;
-        testSettingsOperationMap["testcategory/categoryarrayvalue1"] = new SettingsOperation(0);
-        testSettingsOperationMap["testcategory/categoryarrayvalue2"] = new SettingsOperation(0);
-        testSettingsOperationMap["testcategory/categoryarrayvalue3"] = new SettingsOperation(0);
-        testSettingsOperationMap["testcategory/categoryarrayvalue4"] = new SettingsOperation(0);
+        testSettingsOperationMap["testcategory/categoryarrayvalue1"] = new SettingsOperation(nullptr);
+        testSettingsOperationMap["testcategory/categoryarrayvalue2"] = new SettingsOperation(nullptr);
+        testSettingsOperationMap["testcategory/categoryarrayvalue3"] = new SettingsOperation(nullptr);
+        testSettingsOperationMap["testcategory/categoryarrayvalue4"] = new SettingsOperation(nullptr);
 
         QMap<QString, SettingsOperation*>::iterator i = testSettingsOperationMap.begin();
         while (i != testSettingsOperationMap.end()) {
@@ -256,9 +256,9 @@ private slots:
         testFile.close();
 
         QMap<QString, SettingsOperation*> testSettingsOperationMap;
-        testSettingsOperationMap["testcategory/categoryarrayvalue1"] = new SettingsOperation(0);
-        testSettingsOperationMap["testcategory/categoryarrayvalue2"] = new SettingsOperation(0);
-        testSettingsOperationMap["testcategory/categoryarrayvalue3"] = new SettingsOperation(0);
+        testSettingsOperationMap["testcategory/categoryarrayvalue1"] = new SettingsOperation(nullptr);
+        testSettingsOperationMap["testcategory/categoryarrayvalue2"] = new SettingsOperation(nullptr);
+        testSettingsOperationMap["testcategory/categoryarrayvalue3"] = new SettingsOperation(nullptr);
 
         QMap<QString, SettingsOperation*>::iterator i = testSettingsOperationMap.begin();
         while (i != testSettingsOperationMap.end()) {
diff --git a/tests/environmentvariable/environmentvariabletest.cpp b/tests/environmentvariable/environmentvariabletest.cpp
index 802be207..98663efb 100644
--- a/tests/environmentvariable/environmentvariabletest.cpp
+++ b/tests/environmentvariable/environmentvariabletest.cpp
@@ -49,7 +49,7 @@ void EnvironmentVariableTest::testPersistentNonSystem()
 #endif
     QString key = QLatin1String("IFW_TestKey");
     QString value = QLatin1String("IFW_TestValue");
-    QInstaller::EnvironmentVariableOperation op(0);
+    QInstaller::EnvironmentVariableOperation op(nullptr);
     op.setArguments( QStringList() << key
                     << value
                     << QLatin1String("true")
@@ -77,7 +77,7 @@ void EnvironmentVariableTest::testNonPersistentNonSystem()
 #endif
     QString key = QLatin1String("IFW_TestKey");
     QString value = QLatin1String("IFW_TestValue");
-    QInstaller::EnvironmentVariableOperation op(0);
+    QInstaller::EnvironmentVariableOperation op(nullptr);
     op.setArguments( QStringList() << key
                     << value
                     << QLatin1String("false")
diff --git a/tools/binarycreator/binarycreator.cpp b/tools/binarycreator/binarycreator.cpp
index 3ce7db3f..5de4ff74 100644
--- a/tools/binarycreator/binarycreator.cpp
+++ b/tools/binarycreator/binarycreator.cpp
@@ -546,7 +546,7 @@ QT_END_NAMESPACE
 static int runRcc(const QStringList &args)
 {
     const int argc = args.count();
-    QVector<char*> argv(argc, 0);
+    QVector<char*> argv(argc, nullptr);
     for (int i = 0; i < argc; ++i)
         argv[i] = qstrdup(qPrintable(args[i]));
 
diff --git a/tools/binarycreator/rcc/rcc.cpp b/tools/binarycreator/rcc/rcc.cpp
index 2361e43e..10b7cbc4 100644
--- a/tools/binarycreator/rcc/rcc.cpp
+++ b/tools/binarycreator/rcc/rcc.cpp
@@ -126,7 +126,7 @@ RCCFileInfo::RCCFileInfo(const QString &name, const QFileInfo &fileInfo,
     m_language = language;
     m_country = country;
     m_flags = flags;
-    m_parent = 0;
+    m_parent = nullptr;
     m_nameOffset = 0;
     m_dataOffset = 0;
     m_childOffset = 0;
@@ -325,7 +325,7 @@ RCCResourceLibrary::Strings::Strings() :
 }
 
 RCCResourceLibrary::RCCResourceLibrary()
-  : m_root(0),
+  : m_root(nullptr),
     m_format(C_Code),
     m_verbose(false),
     m_compressLevel(CONSTANT_COMPRESSLEVEL_DEFAULT),
@@ -334,7 +334,7 @@ RCCResourceLibrary::RCCResourceLibrary()
     m_namesOffset(0),
     m_dataOffset(0),
     m_useNameSpace(CONSTANT_USENAMESPACE),
-    m_errorDevice(0)
+    m_errorDevice(nullptr)
 {
     m_out.reserve(30 * 1000 * 1000);
 }
@@ -550,7 +550,7 @@ bool RCCResourceLibrary::interpretResourceFile(QIODevice *inputDevice,
         return false;
     }
 
-    if (m_root == 0) {
+    if (m_root == nullptr) {
         const QString msg = QString::fromUtf8("RCC: Warning: No resources in '%1'.\n").arg(fname);
         m_errorDevice->write(msg.toUtf8());
         if (!ignoreErrors && m_format == Binary) {
@@ -606,9 +606,9 @@ void RCCResourceLibrary::reset()
 {
      if (m_root) {
         delete m_root;
-        m_root = 0;
+        m_root = nullptr;
     }
-    m_errorDevice = 0;
+    m_errorDevice = nullptr;
     m_failedResources.clear();
 }
 
diff --git a/tools/devtool/binarydump.cpp b/tools/devtool/binarydump.cpp
index ad509383..bd8e9053 100644
--- a/tools/devtool/binarydump.cpp
+++ b/tools/devtool/binarydump.cpp
@@ -54,7 +54,7 @@ int BinaryDump::dump(const QInstaller::ResourceCollectionManager &manager, const
         }
     }
 
-    QInstaller::CopyDirectoryOperation copyMetadata(0);
+    QInstaller::CopyDirectoryOperation copyMetadata(nullptr);
     copyMetadata.setArguments(QStringList() << QLatin1String(":/")
         << (targetDir.path() + QLatin1Char('/'))); // Add "/" at the end to make operation work.
     if (!copyMetadata.performOperation()) {
diff --git a/tools/repocompare/repositorymanager.cpp b/tools/repocompare/repositorymanager.cpp
index 7d24b962..3fb863ea 100644
--- a/tools/repocompare/repositorymanager.cpp
+++ b/tools/repocompare/repositorymanager.cpp
@@ -71,7 +71,7 @@ void RepositoryManager::setProductionRepository(const QString &repo)
 {
     QUrl url(repo);
     if (!url.isValid()) {
-        QMessageBox::critical(0, QLatin1String("Error"), QLatin1String("Specified URL is not valid"));
+        QMessageBox::critical(nullptr, QLatin1String("Error"), QLatin1String("Specified URL is not valid"));
         return;
     }
 
@@ -83,7 +83,7 @@ void RepositoryManager::setUpdateRepository(const QString &repo)
 {
     QUrl url(repo);
     if (!url.isValid()) {
-        QMessageBox::critical(0, QLatin1String("Error"), QLatin1String("Specified URL is not valid"));
+        QMessageBox::critical(nullptr, QLatin1String("Error"), QLatin1String("Specified URL is not valid"));
         return;
     }
 
@@ -181,7 +181,7 @@ void RepositoryManager::writeUpdateFile(const QString &fileName)
 {
     QFile file(fileName);
     if (!file.open(QIODevice::ReadWrite | QIODevice::Truncate)) {
-        QMessageBox::critical(0, QLatin1String("Error"),
+        QMessageBox::critical(nullptr, QLatin1String("Error"),
                               QString::fromLatin1("Cannot open file \"%1\" for writing: %2").arg(
                                   QDir::toNativeSeparators(fileName), file.errorString()));
         return;