58 files changed, 111 insertions, 111 deletions

diff --git a/rbutil/rbutilqt/base/autodetection.cpp b/rbutil/rbutilqt/base/autodetection.cpp
index 8c800607c3..00918bf769 100644
--- a/rbutil/rbutilqt/base/autodetection.cpp
+++ b/rbutil/rbutilqt/base/autodetection.cpp
@@ -250,7 +250,7 @@ void Autodetection::mergePatcher(void)
     // try ipodpatcher
     // initialize sector buffer. Needed.
     struct ipod_t ipod;
-    ipod.sectorbuf = NULL;
+    ipod.sectorbuf = nullptr;
     ipod_alloc_buffer(&ipod, BUFFER_SIZE);
     n = ipod_scan(&ipod);
     // FIXME: handle more than one Ipod connected in ipodpatcher.
diff --git a/rbutil/rbutilqt/base/autodetection.h b/rbutil/rbutilqt/base/autodetection.h
index f9adf2aa0c..cdbb94d303 100644
--- a/rbutil/rbutilqt/base/autodetection.h
+++ b/rbutil/rbutilqt/base/autodetection.h
@@ -32,7 +32,7 @@ class Autodetection :public QObject
     Q_OBJECT
 
 public:
-    Autodetection(QObject* parent=0);
+    Autodetection(QObject* parent=nullptr);
 
     enum PlayerStatus {
         PlayerOk,
diff --git a/rbutil/rbutilqt/base/bootloaderinstallams.cpp b/rbutil/rbutilqt/base/bootloaderinstallams.cpp
index 3905ae9fd3..524ce99e98 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallams.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstallams.cpp
@@ -93,7 +93,7 @@ void BootloaderInstallAms::installStage2(void)
     rb_packed = load_rockbox_file(bootfile.toLocal8Bit().data(), &model,
                                   &bootloader_size,&rb_packedsize,
                                     errstr,sizeof(errstr));
-    if (rb_packed == NULL)
+    if (rb_packed == nullptr)
     {
         LOG_ERROR() << "could not load bootloader: " << bootfile;
         emit logItem(errstr, LOGERROR);
@@ -106,7 +106,7 @@ void BootloaderInstallAms::installStage2(void)
     buf = load_of_file(m_offile.toLocal8Bit().data(), model, &len, &sum,
                         &firmware_size, &of_packed ,&of_packedsize,
                         errstr, sizeof(errstr));
-    if (buf == NULL)
+    if (buf == nullptr)
     {
         LOG_ERROR() << "could not load OF: " << m_offile;
         emit logItem(errstr, LOGERROR);
diff --git a/rbutil/rbutilqt/base/bootloaderinstallbase.cpp b/rbutil/rbutilqt/base/bootloaderinstallbase.cpp
index 5f8fd40d08..efc61f7529 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallbase.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstallbase.cpp
@@ -246,7 +246,7 @@ bool BootloaderInstallBase::setOfFile(QString of, QStringList blfile)
         delete zu;
 
     // if ZIP failed, try CAB
-    if(util == 0)
+    if(util == nullptr)
     {
         MsPackUtil *msu = new MsPackUtil(this);
         if(msu->open(of))
diff --git a/rbutil/rbutilqt/base/bootloaderinstallbspatch.cpp b/rbutil/rbutilqt/base/bootloaderinstallbspatch.cpp
index 8b2ef97cd2..f8eab408fd 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallbspatch.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstallbspatch.cpp
@@ -57,7 +57,7 @@ void BootloaderThreadBSPatch::run(void)
 BootloaderInstallBSPatch::BootloaderInstallBSPatch(QObject *parent)
         : BootloaderInstallBase(parent)
 {
-    m_thread = NULL;
+    m_thread = nullptr;
 }
 
 QString BootloaderInstallBSPatch::ofHint()
diff --git a/rbutil/rbutilqt/base/bootloaderinstallchinachip.h b/rbutil/rbutilqt/base/bootloaderinstallchinachip.h
index d82919a571..e92f292283 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallchinachip.h
+++ b/rbutil/rbutilqt/base/bootloaderinstallchinachip.h
@@ -27,7 +27,7 @@ class BootloaderInstallChinaChip : public BootloaderInstallBase
     Q_OBJECT
 
     public:
-        BootloaderInstallChinaChip(QObject *parent = 0);
+        BootloaderInstallChinaChip(QObject *parent = nullptr);
         bool install(void);
         bool uninstall(void);
         BootloaderInstallBase::BootloaderType installed(void);
diff --git a/rbutil/rbutilqt/base/bootloaderinstallhelper.cpp b/rbutil/rbutilqt/base/bootloaderinstallhelper.cpp
index ca055bc7e9..c94ed29140 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallhelper.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstallhelper.cpp
@@ -73,7 +73,7 @@ BootloaderInstallBase* BootloaderInstallHelper::createBootloaderInstaller(QObjec
         return new BootloaderInstallBSPatch(parent);
     }
     else {
-        return NULL;
+        return nullptr;
     }
 }
 
diff --git a/rbutil/rbutilqt/base/bootloaderinstallhex.cpp b/rbutil/rbutilqt/base/bootloaderinstallhex.cpp
index 0c8087eaf4..931c7dfa2e 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallhex.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstallhex.cpp
@@ -32,11 +32,11 @@ struct md5s {
 
 struct md5s md5sums[] = {
 #include "irivertools/h100sums.h"
-    { 0, 0 },
+    { nullptr, nullptr },
 #include "irivertools/h120sums.h"
-    { 0, 0 },
+    { nullptr, nullptr },
 #include "irivertools/h300sums.h"
-    { 0, 0 }
+    { nullptr, nullptr }
 };
 
 
@@ -86,7 +86,7 @@ bool BootloaderInstallHex::install(void)
     m_model = 4;
     // 3: h300, 2: h120, 1: h100, 0:invalid
     while(i--) {
-        if(md5sums[i].orig == 0)
+        if(md5sums[i].orig == nullptr)
             m_model--;
         if(!qstrcmp(md5sums[i].orig, hash.toLatin1()))
             break;
diff --git a/rbutil/rbutilqt/base/bootloaderinstallhex.h b/rbutil/rbutilqt/base/bootloaderinstallhex.h
index c971429a10..700d77447a 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallhex.h
+++ b/rbutil/rbutilqt/base/bootloaderinstallhex.h
@@ -31,7 +31,7 @@ class BootloaderInstallHex : public BootloaderInstallBase
     Q_OBJECT
 
     public:
-        BootloaderInstallHex(QObject *parent = 0);
+        BootloaderInstallHex(QObject *parent = nullptr);
         bool install(void);
         bool uninstall(void);
         BootloaderInstallBase::BootloaderType installed(void);
diff --git a/rbutil/rbutilqt/base/bootloaderinstallimx.cpp b/rbutil/rbutilqt/base/bootloaderinstallimx.cpp
index 547c8d8fc4..581d70270c 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallimx.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstallimx.cpp
@@ -63,7 +63,7 @@ void BootloaderThreadImx::run(void)
 BootloaderInstallImx::BootloaderInstallImx(QObject *parent)
         : BootloaderInstallBase(parent)
 {
-    m_thread = NULL;
+    m_thread = nullptr;
 }
 
 
diff --git a/rbutil/rbutilqt/base/bootloaderinstallipod.cpp b/rbutil/rbutilqt/base/bootloaderinstallipod.cpp
index fdee6f5778..3535f9c69c 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallipod.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstallipod.cpp
@@ -45,7 +45,7 @@ BootloaderInstallIpod::~BootloaderInstallIpod()
 
 bool BootloaderInstallIpod::install(void)
 {
-    if(ipod.sectorbuf == NULL) {
+    if(ipod.sectorbuf == nullptr) {
         emit logItem(tr("Error: can't allocate buffer memory!"), LOGERROR);
         emit done(true);
         return false;
diff --git a/rbutil/rbutilqt/base/bootloaderinstallsansa.cpp b/rbutil/rbutilqt/base/bootloaderinstallsansa.cpp
index 5d56fe593a..e4fd3766cb 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallsansa.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstallsansa.cpp
@@ -46,7 +46,7 @@ BootloaderInstallSansa::~BootloaderInstallSansa()
  */
 bool BootloaderInstallSansa::install(void)
 {
-    if(sansa.sectorbuf == NULL) {
+    if(sansa.sectorbuf == nullptr) {
         emit logItem(tr("Error: can't allocate buffer memory!"), LOGERROR);
         return false;
         emit done(true);
@@ -88,7 +88,7 @@ bool BootloaderInstallSansa::install(void)
  */
 void BootloaderInstallSansa::installStage2(void)
 {
-    unsigned char* buf = NULL;
+    unsigned char* buf = nullptr;
     unsigned int len;
 
     emit logItem(tr("Installing Rockbox bootloader"), LOGINFO);
diff --git a/rbutil/rbutilqt/base/bootloaderinstallsansa.h b/rbutil/rbutilqt/base/bootloaderinstallsansa.h
index 40dc89ff25..45837f0ac3 100644
--- a/rbutil/rbutilqt/base/bootloaderinstallsansa.h
+++ b/rbutil/rbutilqt/base/bootloaderinstallsansa.h
@@ -30,7 +30,7 @@ class BootloaderInstallSansa : public BootloaderInstallBase
     Q_OBJECT
 
     public:
-        BootloaderInstallSansa(QObject *parent = 0);
+        BootloaderInstallSansa(QObject *parent = nullptr);
         ~BootloaderInstallSansa();
         bool install(void);
         bool uninstall(void);
diff --git a/rbutil/rbutilqt/base/bootloaderinstalltcc.cpp b/rbutil/rbutilqt/base/bootloaderinstalltcc.cpp
index e0bfbe3cf2..1551d7c45d 100644
--- a/rbutil/rbutilqt/base/bootloaderinstalltcc.cpp
+++ b/rbutil/rbutilqt/base/bootloaderinstalltcc.cpp
@@ -57,7 +57,7 @@ bool BootloaderInstallTcc::install(void)
 
 void BootloaderInstallTcc::installStage2(void)
 {
-    unsigned char *of_buf, *boot_buf = NULL, *patched_buf = NULL;
+    unsigned char *of_buf, *boot_buf = nullptr, *patched_buf = nullptr;
     int n, of_size, boot_size, patched_size;
     char errstr[200];
     bool ret = false;
@@ -76,7 +76,7 @@ void BootloaderInstallTcc::installStage2(void)
 
     /* Load original firmware file */
     of_buf = file_read(m_offile.toLocal8Bit().data(), &of_size);
-    if (of_buf == NULL)
+    if (of_buf == nullptr)
     {
         emit logItem(errstr, LOGERROR);
         emit logItem(tr("Could not load %1").arg(m_offile), LOGERROR);
@@ -93,7 +93,7 @@ void BootloaderInstallTcc::installStage2(void)
 
     /* Load bootloader file */
     boot_buf = file_read(bootfile.toLocal8Bit().data(), &boot_size);
-    if (boot_buf == NULL)
+    if (boot_buf == nullptr)
     {
         emit logItem(errstr, LOGERROR);
         emit logItem(tr("Could not load %1").arg(bootfile), LOGERROR);
@@ -105,7 +105,7 @@ void BootloaderInstallTcc::installStage2(void)
 
     patched_buf = patch_firmware_tcc(of_buf, of_size, boot_buf, boot_size,
             &patched_size);
-    if (patched_buf == NULL)
+    if (patched_buf == nullptr)
     {
         emit logItem(errstr, LOGERROR);
         emit logItem(tr("Could not patch firmware"), LOGERROR);
diff --git a/rbutil/rbutilqt/base/encoderexe.h b/rbutil/rbutilqt/base/encoderexe.h
index dd1c57ec67..4008689167 100644
--- a/rbutil/rbutilqt/base/encoderexe.h
+++ b/rbutil/rbutilqt/base/encoderexe.h
@@ -34,7 +34,7 @@ class EncoderExe : public EncoderBase
 
     Q_OBJECT
     public:
-        EncoderExe(QString name,QObject *parent = NULL);
+        EncoderExe(QString name,QObject *parent = nullptr);
         bool encode(QString input,QString output);
         bool start();
         bool stop() {return true;}
diff --git a/rbutil/rbutilqt/base/encoderrbspeex.cpp b/rbutil/rbutilqt/base/encoderrbspeex.cpp
index 0fc0293685..2bee66028a 100644
--- a/rbutil/rbutilqt/base/encoderrbspeex.cpp
+++ b/rbutil/rbutilqt/base/encoderrbspeex.cpp
@@ -83,11 +83,11 @@ bool EncoderRbSpeex::encode(QString input,QString output)
     char errstr[512];
 
     FILE *fin,*fout;
-    if ((fin = fopen(input.toLocal8Bit(), "rb")) == NULL) {
+    if ((fin = fopen(input.toLocal8Bit(), "rb")) == nullptr) {
         LOG_ERROR() << "Error: could not open input file\n";
         return false;
     }
-    if ((fout = fopen(output.toLocal8Bit(), "wb")) == NULL) {
+    if ((fout = fopen(output.toLocal8Bit(), "wb")) == nullptr) {
         LOG_ERROR() << "Error: could not open output file\n";
         fclose(fin);
         return false;
diff --git a/rbutil/rbutilqt/base/encoderrbspeex.h b/rbutil/rbutilqt/base/encoderrbspeex.h
index b3028b3250..6ad41c38a3 100644
--- a/rbutil/rbutilqt/base/encoderrbspeex.h
+++ b/rbutil/rbutilqt/base/encoderrbspeex.h
@@ -34,7 +34,7 @@ class EncoderRbSpeex : public EncoderBase
 
     Q_OBJECT
     public:
-        EncoderRbSpeex(QObject *parent = NULL);
+        EncoderRbSpeex(QObject *parent = nullptr);
         bool encode(QString input,QString output);
         bool start();
         bool stop() {return true;}
diff --git a/rbutil/rbutilqt/base/httpget.h b/rbutil/rbutilqt/base/httpget.h
index 7cdddedfbf..dfd7b87c89 100644
--- a/rbutil/rbutilqt/base/httpget.h
+++ b/rbutil/rbutilqt/base/httpget.h
@@ -32,7 +32,7 @@ class HttpGet : public QObject
     Q_OBJECT
 
     public:
-        HttpGet(QObject *parent = 0);
+        HttpGet(QObject *parent = nullptr);
 
         void getFile(const QUrl &url);
         void setProxy(const QUrl &url);
diff --git a/rbutil/rbutilqt/base/mspackutil.cpp b/rbutil/rbutilqt/base/mspackutil.cpp
index 1ee250cd6d..b794272199 100644
--- a/rbutil/rbutilqt/base/mspackutil.cpp
+++ b/rbutil/rbutilqt/base/mspackutil.cpp
@@ -24,8 +24,8 @@
 MsPackUtil::MsPackUtil(QObject* parent)
     :ArchiveUtil(parent)
 {
-    m_cabd = mspack_create_cab_decompressor(NULL);
-    m_cabinet = NULL;
+    m_cabd = mspack_create_cab_decompressor(nullptr);
+    m_cabinet = nullptr;
     if(!m_cabd)
         LOG_ERROR() << "CAB decompressor creation failed!";
 }
@@ -41,20 +41,20 @@ bool MsPackUtil::open(QString& mspackfile)
 {
     close();
 
-    if(m_cabd == NULL)
+    if(m_cabd == nullptr)
     {
         LOG_ERROR() << "No CAB decompressor available: cannot open file!";
         return false;
     }
     m_cabinet = m_cabd->search(m_cabd, QFile::encodeName(mspackfile).constData());
-    return m_cabinet != NULL;
+    return m_cabinet != nullptr;
 }
 
 bool MsPackUtil::close(void)
 {
     if(m_cabd && m_cabinet)
         m_cabd->close(m_cabd, m_cabinet);
-    m_cabinet = NULL;
+    m_cabinet = nullptr;
     return true;
 }
 
@@ -76,7 +76,7 @@ bool MsPackUtil::extractArchive(const QString& dest, QString file)
     else if(!file.isEmpty())
         singleoutfile = dest;
     struct mscabd_file *f = m_cabinet->files;
-    if(f == NULL)
+    if(f == nullptr)
     {
         LOG_WARNING() << "CAB doesn't contain file" << file;
         return true;
diff --git a/rbutil/rbutilqt/base/rbsettings.cpp b/rbutil/rbutilqt/base/rbsettings.cpp
index 512341b84c..827c0f96fd 100644
--- a/rbutil/rbutilqt/base/rbsettings.cpp
+++ b/rbutil/rbutilqt/base/rbsettings.cpp
@@ -82,11 +82,11 @@ const static struct {
 };
 
 //! pointer to setting object to NULL
-QSettings* RbSettings::userSettings = NULL;
+QSettings* RbSettings::userSettings = nullptr;
 
 void RbSettings::ensureRbSettingsExists()
 {
-    if(userSettings == NULL)
+    if(userSettings == nullptr)
     {
         // portable installation:
         // check for a configuration file in the program folder.
@@ -96,13 +96,13 @@ void RbSettings::ensureRbSettingsExists()
         if(config.isFile())
         {
             userSettings = new QSettings(QCoreApplication::instance()->applicationDirPath()
-                + "/RockboxUtility.ini", QSettings::IniFormat, NULL);
+                + "/RockboxUtility.ini", QSettings::IniFormat, nullptr);
             LOG_INFO() << "configuration: portable";
         }
         else
         {
             userSettings = new QSettings(QSettings::IniFormat,
-            QSettings::UserScope, "rockbox.org", "RockboxUtility",NULL);
+            QSettings::UserScope, "rockbox.org", "RockboxUtility",nullptr);
             LOG_INFO() << "configuration: system";
         }
     }
@@ -123,7 +123,7 @@ void RbSettings::sync()
     {
         char* realuser = getenv("SUDO_UID");
         char* realgroup = getenv("SUDO_GID");
-        if(realuser != NULL && realgroup != NULL)
+        if(realuser != nullptr && realgroup != nullptr)
         {
             int realuid = atoi(realuser);
             int realgid = atoi(realgroup);
diff --git a/rbutil/rbutilqt/base/system.cpp b/rbutil/rbutilqt/base/system.cpp
index 73f5024fa2..dafab971ec 100644
--- a/rbutil/rbutilqt/base/system.cpp
+++ b/rbutil/rbutilqt/base/system.cpp
@@ -242,18 +242,18 @@ QMultiMap<uint32_t, QString> System::listUsbDevices(void)
     LOG_INFO() << "Searching for USB devices";
 #if defined(Q_OS_LINUX)
     libusb_device **devs;
-    if(libusb_init(NULL) != 0) {
+    if(libusb_init(nullptr) != 0) {
         LOG_ERROR() << "Initializing libusb-1 failed.";
         return usbids;
     }
 
-    if(libusb_get_device_list(NULL, &devs) < 1) {
+    if(libusb_get_device_list(nullptr, &devs) < 1) {
         LOG_ERROR() << "Error getting device list.";
         return usbids;
     }
     libusb_device *dev;
     int i = 0;
-    while((dev = devs[i++]) != NULL) {
+    while((dev = devs[i++]) != nullptr) {
         QString name;
         unsigned char buf[256];
         uint32_t id;
@@ -279,7 +279,7 @@ QMultiMap<uint32_t, QString> System::listUsbDevices(void)
     }
 
     libusb_free_device_list(devs, 1);
-    libusb_exit(NULL);
+    libusb_exit(nullptr);
 #endif
 
 #if defined(Q_OS_MACX)
diff --git a/rbutil/rbutilqt/base/systeminfo.cpp b/rbutil/rbutilqt/base/systeminfo.cpp
index f2d47be93d..67b0428ceb 100644
--- a/rbutil/rbutilqt/base/systeminfo.cpp
+++ b/rbutil/rbutilqt/base/systeminfo.cpp
@@ -200,7 +200,7 @@ QMap<int, QStringList> SystemInfo::usbIdMap(enum MapType type)
         int j = ids.size();
         while(j--) {
             QStringList l;
-            int id = ids.at(j).toInt(0, 16);
+            int id = ids.at(j).toInt(nullptr, 16);
             if(id == 0) {
                 continue;
             }
diff --git a/rbutil/rbutilqt/base/talkfile.cpp b/rbutil/rbutilqt/base/talkfile.cpp
index b4f05762e9..1b1dd934ed 100644
--- a/rbutil/rbutilqt/base/talkfile.cpp
+++ b/rbutil/rbutilqt/base/talkfile.cpp
@@ -230,7 +230,7 @@ bool TalkFileCreator::copyTalkFiles(QString* errString)
     int m_progress = 0;
     emit logProgress(m_progress,progressMax);
 
-    QSettings installlog(m_mountpoint + "/.rockbox/rbutil.log", QSettings::IniFormat, 0);
+    QSettings installlog(m_mountpoint + "/.rockbox/rbutil.log", QSettings::IniFormat, nullptr);
     installlog.beginGroup("talkfiles");
 
     for(int i=0; i < m_talkList.size(); i++)
diff --git a/rbutil/rbutilqt/base/ttsbase.cpp b/rbutil/rbutilqt/base/ttsbase.cpp
index 0254c44e1d..0102d215a6 100644
--- a/rbutil/rbutilqt/base/ttsbase.cpp
+++ b/rbutil/rbutilqt/base/ttsbase.cpp
@@ -69,7 +69,7 @@ void TTSBase::initTTSList()
 TTSBase* TTSBase::getTTS(QObject* parent,QString ttsName)
 {
 
-    TTSBase* tts = 0;
+    TTSBase* tts = nullptr;
 #if defined(Q_OS_WIN)
     if(ttsName == "sapi")
         tts = new TTSSapi(parent);
diff --git a/rbutil/rbutilqt/base/ttsespeak.h b/rbutil/rbutilqt/base/ttsespeak.h
index 85d126e94f..afe19fbdac 100644
--- a/rbutil/rbutilqt/base/ttsespeak.h
+++ b/rbutil/rbutilqt/base/ttsespeak.h
@@ -28,7 +28,7 @@ class TTSEspeak : public TTSExes
 {
     Q_OBJECT
     public:
-        TTSEspeak(QObject* parent=NULL) : TTSExes(parent)
+        TTSEspeak(QObject* parent=nullptr) : TTSExes(parent)
         {
             m_name = "espeak";
 
diff --git a/rbutil/rbutilqt/base/ttsespeakng.h b/rbutil/rbutilqt/base/ttsespeakng.h
index 367b70b06c..55aba62e7d 100644
--- a/rbutil/rbutilqt/base/ttsespeakng.h
+++ b/rbutil/rbutilqt/base/ttsespeakng.h
@@ -28,7 +28,7 @@ class TTSEspeakNG : public TTSExes
 {
     Q_OBJECT
     public:
-        TTSEspeakNG(QObject* parent=NULL) : TTSExes(parent)
+        TTSEspeakNG(QObject* parent=nullptr) : TTSExes(parent)
         {
             m_name = "espeak-ng";
 
diff --git a/rbutil/rbutilqt/base/ttsexes.h b/rbutil/rbutilqt/base/ttsexes.h
index 03252cdc92..5707c827fe 100644
--- a/rbutil/rbutilqt/base/ttsexes.h
+++ b/rbutil/rbutilqt/base/ttsexes.h
@@ -34,7 +34,7 @@ class TTSExes : public TTSBase
 
     Q_OBJECT
     public:
-        TTSExes(QObject* parent=NULL);
+        TTSExes(QObject* parent=nullptr);
         TTSStatus voice(QString text, QString wavfile, QString *errStr);
         bool start(QString *errStr);
         bool stop() {return true;}
diff --git a/rbutil/rbutilqt/base/ttsfestival.h b/rbutil/rbutilqt/base/ttsfestival.h
index 2772108a23..5f6dc13ab5 100644
--- a/rbutil/rbutilqt/base/ttsfestival.h
+++ b/rbutil/rbutilqt/base/ttsfestival.h
@@ -36,7 +36,7 @@ class TTSFestival : public TTSBase
 
     Q_OBJECT
     public:
-        TTSFestival(QObject* parent=NULL) : TTSBase(parent) {}
+        TTSFestival(QObject* parent=nullptr) : TTSBase(parent) {}
         ~TTSFestival();
         bool start(QString *errStr);
         bool stop();
diff --git a/rbutil/rbutilqt/base/ttsflite.h b/rbutil/rbutilqt/base/ttsflite.h
index 1d9021108e..717c311a34 100644
--- a/rbutil/rbutilqt/base/ttsflite.h
+++ b/rbutil/rbutilqt/base/ttsflite.h
@@ -28,7 +28,7 @@ class TTSFlite : public TTSExes
 {
     Q_OBJECT
     public:
-        TTSFlite(QObject* parent=NULL) : TTSExes(parent)
+        TTSFlite(QObject* parent=nullptr) : TTSExes(parent)
         {
             m_name = "flite";
 
diff --git a/rbutil/rbutilqt/base/ttsmimic.h b/rbutil/rbutilqt/base/ttsmimic.h
index fba4e53fe2..f4d7a8beac 100644
--- a/rbutil/rbutilqt/base/ttsmimic.h
+++ b/rbutil/rbutilqt/base/ttsmimic.h
@@ -28,7 +28,7 @@ class TTSMimic : public TTSExes
 {
     Q_OBJECT
     public:
-        TTSMimic(QObject* parent=NULL) : TTSExes(parent)
+        TTSMimic(QObject* parent=nullptr) : TTSExes(parent)
         {
             m_name = "mimic";
 
diff --git a/rbutil/rbutilqt/base/ttsmssp.h b/rbutil/rbutilqt/base/ttsmssp.h
index 6727ed5d37..817b9fde58 100644
--- a/rbutil/rbutilqt/base/ttsmssp.h
+++ b/rbutil/rbutilqt/base/ttsmssp.h
@@ -28,7 +28,7 @@ class TTSMssp: public TTSSapi
 {
     Q_OBJECT
     public:
-        TTSMssp(QObject* parent=NULL) : TTSSapi(parent)
+        TTSMssp(QObject* parent=nullptr) : TTSSapi(parent)
         {
             m_TTSTemplate = "cscript //nologo \"%exe\" "
                 "/language:%lang /voice:\"%voice\" "
diff --git a/rbutil/rbutilqt/base/ttssapi.cpp b/rbutil/rbutilqt/base/ttssapi.cpp
index 75d83e7d21..f754f1a19b 100644
--- a/rbutil/rbutilqt/base/ttssapi.cpp
+++ b/rbutil/rbutilqt/base/ttssapi.cpp
@@ -124,7 +124,7 @@ bool TTSSapi::start(QString *errStr)
     execstring.replace("%speed",m_TTSSpeed);
 
     LOG_INFO() << "Start:" << execstring;
-    voicescript = new QProcess(NULL);
+    voicescript = new QProcess(nullptr);
     //connect(voicescript,SIGNAL(readyReadStandardError()),this,SLOT(error()));
     voicescript->start(execstring);
     LOG_INFO() << "wait for process";
@@ -190,7 +190,7 @@ QStringList TTSSapi::getVoiceList(QString language)
     execstring.replace("%lang",language);
 
     LOG_INFO() << "Start:" << execstring;
-    voicescript = new QProcess(NULL);
+    voicescript = new QProcess(nullptr);
     voicescript->start(execstring);
     LOG_INFO() << "wait for process";
     if(!voicescript->waitForStarted()) {
diff --git a/rbutil/rbutilqt/base/ttssapi.h b/rbutil/rbutilqt/base/ttssapi.h
index f645774852..25d7d3dab7 100644
--- a/rbutil/rbutilqt/base/ttssapi.h
+++ b/rbutil/rbutilqt/base/ttssapi.h
@@ -36,7 +36,7 @@ class TTSSapi : public TTSBase
 
     Q_OBJECT
     public:
-        TTSSapi(QObject* parent=NULL);
+        TTSSapi(QObject* parent=nullptr);
 
         TTSStatus voice(QString text,QString wavfile, QString *errStr);
         bool start(QString *errStr);
diff --git a/rbutil/rbutilqt/base/ttssapi4.h b/rbutil/rbutilqt/base/ttssapi4.h
index 7964cbfd2b..d6408eaa2c 100644
--- a/rbutil/rbutilqt/base/ttssapi4.h
+++ b/rbutil/rbutilqt/base/ttssapi4.h
@@ -28,7 +28,7 @@ class TTSSapi4: public TTSSapi
 {
     Q_OBJECT
     public:
-        TTSSapi4(QObject* parent=NULL) : TTSSapi(parent)
+        TTSSapi4(QObject* parent=nullptr) : TTSSapi(parent)
         {
             m_TTSTemplate = "cscript //nologo \"%exe\" "
                 "/language:%lang /voice:\"%voice\" "
diff --git a/rbutil/rbutilqt/base/ttsswift.h b/rbutil/rbutilqt/base/ttsswift.h
index 9d678a6d92..adbc674d78 100644
--- a/rbutil/rbutilqt/base/ttsswift.h
+++ b/rbutil/rbutilqt/base/ttsswift.h
@@ -28,7 +28,7 @@ class TTSSwift : public TTSExes
 {
     Q_OBJECT
     public:
-        TTSSwift(QObject* parent=NULL) : TTSExes(parent)
+        TTSSwift(QObject* parent=nullptr) : TTSExes(parent)
         {
             m_name = "swift";
             m_TTSTemplate = "\"%exe\" %options -o \"%wavfile\" -- \"%text\"";
diff --git a/rbutil/rbutilqt/base/uninstall.cpp b/rbutil/rbutilqt/base/uninstall.cpp
index 4b90bc6b77..5ab670a031 100644
--- a/rbutil/rbutilqt/base/uninstall.cpp
+++ b/rbutil/rbutilqt/base/uninstall.cpp
@@ -112,7 +112,7 @@ void Uninstaller::uninstall(void)
 
 QStringList Uninstaller::getAllSections()
 {
-    QSettings installlog(m_mountpoint + "/.rockbox/rbutil.log", QSettings::IniFormat, 0);
+    QSettings installlog(m_mountpoint + "/.rockbox/rbutil.log", QSettings::IniFormat, nullptr);
     QStringList allSections = installlog.childGroups();
     allSections.removeAt(allSections.lastIndexOf("Bootloader"));
     return allSections;
diff --git a/rbutil/rbutilqt/base/voicefile.cpp b/rbutil/rbutilqt/base/voicefile.cpp
index ec9ecbed33..c4edac64b9 100644
--- a/rbutil/rbutilqt/base/voicefile.cpp
+++ b/rbutil/rbutilqt/base/voicefile.cpp
@@ -300,7 +300,7 @@ void VoiceFileCreator::create(void)
     //make voicefile
     emit logItem(tr("Creating voicefiles..."),LOGINFO);
     FILE* ids2 = fopen(m_filename.toLocal8Bit(), "r");
-    if (ids2 == NULL)
+    if (ids2 == nullptr)
     {
         cleanup();
         emit logItem(tr("Error opening downloaded file"),LOGERROR);
@@ -310,7 +310,7 @@ void VoiceFileCreator::create(void)
 
     FILE* output = fopen(QString(m_mountpoint + "/.rockbox/langs/" + m_lang
                 + ".voice").toLocal8Bit(), "wb");
-    if (output == NULL)
+    if (output == nullptr)
     {
         cleanup();
         fclose(ids2);
@@ -327,7 +327,7 @@ void VoiceFileCreator::create(void)
     cleanup();
 
     // Add Voice file to the install log
-    QSettings installlog(m_mountpoint + "/.rockbox/rbutil.log", QSettings::IniFormat, 0);
+    QSettings installlog(m_mountpoint + "/.rockbox/rbutil.log", QSettings::IniFormat, nullptr);
     installlog.beginGroup(QString("Voice (self created, %1)").arg(m_lang));
     installlog.setValue("/.rockbox/langs/" + m_lang + ".voice", m_versionstring);
     installlog.endGroup();
diff --git a/rbutil/rbutilqt/base/zipinstaller.cpp b/rbutil/rbutilqt/base/zipinstaller.cpp
index 4bce1e5a25..3376169911 100644
--- a/rbutil/rbutilqt/base/zipinstaller.cpp
+++ b/rbutil/rbutilqt/base/zipinstaller.cpp
@@ -24,7 +24,7 @@
 
 ZipInstaller::ZipInstaller(QObject* parent) :
     QObject(parent),
-    m_unzip(true), m_usecache(false), m_getter(0)
+    m_unzip(true), m_usecache(false), m_getter(nullptr)
 {
 }
 
@@ -87,7 +87,7 @@ void ZipInstaller::installStart()
     m_file = m_downloadFile->fileName();
     m_downloadFile->close();
     // get the real file.
-    if(m_getter != 0) m_getter->deleteLater();
+    if(m_getter != nullptr) m_getter->deleteLater();
     m_getter = new HttpGet(this);
     if(m_usecache) {
         m_getter->setCache(true);
@@ -188,7 +188,7 @@ void ZipInstaller::downloadDone(bool error)
     }
 
     emit logItem(tr("Creating installation log"),LOGINFO);
-    QSettings installlog(m_mountpoint + "/.rockbox/rbutil.log", QSettings::IniFormat, 0);
+    QSettings installlog(m_mountpoint + "/.rockbox/rbutil.log", QSettings::IniFormat, nullptr);
 
     installlog.beginGroup(m_logsection);
     for(int i = 0; i < zipContents.size(); i++)
diff --git a/rbutil/rbutilqt/base/ziputil.cpp b/rbutil/rbutilqt/base/ziputil.cpp
index b6cfdddce2..45119f7d99 100644
--- a/rbutil/rbutilqt/base/ziputil.cpp
+++ b/rbutil/rbutilqt/base/ziputil.cpp
@@ -29,7 +29,7 @@
 
 ZipUtil::ZipUtil(QObject* parent) : ArchiveUtil(parent)
 {
-    m_zip = NULL;
+    m_zip = nullptr;
 }
 
 
@@ -65,7 +65,7 @@ bool ZipUtil::close(void)
         error = m_zip->getZipError();
     }
     delete m_zip;
-    m_zip = NULL;
+    m_zip = nullptr;
     return (error == UNZ_OK) ? true : false;
 }
 
diff --git a/rbutil/rbutilqt/configure.cpp b/rbutil/rbutilqt/configure.cpp
index fc67cb410e..066b9d7db7 100644
--- a/rbutil/rbutilqt/configure.cpp
+++ b/rbutil/rbutilqt/configure.cpp
@@ -370,7 +370,7 @@ void Config::setDevices()
     QStringList brands = manuf.uniqueKeys();
     QTreeWidgetItem *w;
     QTreeWidgetItem *w2;
-    QTreeWidgetItem *w3 = 0;
+    QTreeWidgetItem *w3 = nullptr;
 
     QString selected = RbSettings::value(RbSettings::Platform).toString();
     for(int c = 0; c < brands.size(); c++) {
@@ -408,7 +408,7 @@ void Config::setDevices()
     while(widgetitem);
     // add new items
     ui.treeDevices->insertTopLevelItems(0, items);
-    if(w3 != 0) {
+    if(w3 != nullptr) {
         ui.treeDevices->setCurrentItem(w3); // hilight old selection
         ui.treeDevices->scrollToItem(w3);
     }
diff --git a/rbutil/rbutilqt/configure.h b/rbutil/rbutilqt/configure.h
index 4e69996d1f..5f63e82447 100644
--- a/rbutil/rbutilqt/configure.h
+++ b/rbutil/rbutilqt/configure.h
@@ -30,7 +30,7 @@ class Config : public QDialog
 {
     Q_OBJECT
     public:
-        Config(QWidget *parent = 0,int index=0);
+        Config(QWidget *parent = nullptr,int index=0);
 
     signals:
         void settingsUpdated(void);
diff --git a/rbutil/rbutilqt/encttscfggui.cpp b/rbutil/rbutilqt/encttscfggui.cpp
index bf3432dc90..19181c0f8b 100644
--- a/rbutil/rbutilqt/encttscfggui.cpp
+++ b/rbutil/rbutilqt/encttscfggui.cpp
@@ -44,8 +44,8 @@ EncTtsCfgGui::EncTtsCfgGui(QDialog* parent, EncTtsSettingInterface* iface, QStri
     m_busyDlg= new QProgressDialog("", "", 0, 0,this);
     m_busyDlg->setWindowTitle(tr("Waiting for engine..."));
     m_busyDlg->setModal(true);
-    m_busyDlg->setLabel(0);
-    m_busyDlg->setCancelButton(0);
+    m_busyDlg->setLabel(nullptr);
+    m_busyDlg->setCancelButton(nullptr);
     m_busyDlg->hide();
     connect(iface,SIGNAL(busy()),this,SLOT(showBusy()));
     connect(iface,SIGNAL(busyEnd()),this,SLOT(hideBusy()));
@@ -74,7 +74,7 @@ void EncTtsCfgGui::setUpWindow()
         gridLayout->addWidget(widget, i, 1);
         widget->setLayoutDirection(Qt::LeftToRight);
         QWidget *btn = createButton(m_settingsList.at(i));
-        if(btn != NULL)
+        if(btn != nullptr)
         {
             gridLayout->addWidget(btn, i, 2);
         }
@@ -113,7 +113,7 @@ void EncTtsCfgGui::setUpWindow()
 QWidget* EncTtsCfgGui::createWidgets(EncTtsSetting* setting)
 {
     // value display
-    QWidget* value = NULL;
+    QWidget* value = nullptr;
     switch(setting->type())
     {
         case EncTtsSetting::eDOUBLE:
@@ -181,7 +181,7 @@ QWidget* EncTtsCfgGui::createWidgets(EncTtsSetting* setting)
     }
 
     // remember widget
-    if(value != NULL)
+    if(value != nullptr)
     {
         m_settingsWidgetsMap.insert(setting,value);
         connect(setting,SIGNAL(updateGui()),this,SLOT(updateWidget()));
@@ -208,14 +208,14 @@ QWidget* EncTtsCfgGui::createButton(EncTtsSetting* setting)
         return refreshbtn;
     }
     else
-        return NULL;
+        return nullptr;
 }
 
 void EncTtsCfgGui::updateSetting()
 {
     //cast and get the sender widget
     QWidget* widget = qobject_cast<QWidget*>(QObject::sender());
-    if(widget == NULL) return;
+    if(widget == nullptr) return;
     // get the corresponding setting
     EncTtsSetting* setting = m_settingsWidgetsMap.key(widget);
 
@@ -264,7 +264,7 @@ void EncTtsCfgGui::updateWidget()
 {
     // get sender setting
     EncTtsSetting* setting = qobject_cast<EncTtsSetting*>(QObject::sender());
-    if(setting == NULL) return;
+    if(setting == nullptr) return;
     // get corresponding widget
     QWidget* widget = m_settingsWidgetsMap.value(setting);
 
@@ -370,7 +370,7 @@ void EncTtsCfgGui::browse(QObject* settingObj)
 {
     // cast top setting
     EncTtsSetting* setting= qobject_cast<EncTtsSetting*>(settingObj);
-    if(setting == NULL) return;
+    if(setting == nullptr) return;
 
     //current path
     QString curPath = setting->current().toString();
diff --git a/rbutil/rbutilqt/gui/backupdialog.h b/rbutil/rbutilqt/gui/backupdialog.h
index 490a034c86..185166134a 100644
--- a/rbutil/rbutilqt/gui/backupdialog.h
+++ b/rbutil/rbutilqt/gui/backupdialog.h
@@ -29,7 +29,7 @@ class BackupDialog : public QDialog
 {
     Q_OBJECT
     public:
-        BackupDialog(QWidget* parent = 0);
+        BackupDialog(QWidget* parent = nullptr);
 
     private slots:
         void changeBackupPath(void);
diff --git a/rbutil/rbutilqt/gui/changelog.h b/rbutil/rbutilqt/gui/changelog.h
index 103a3bc9fb..aca2a6ed32 100644
--- a/rbutil/rbutilqt/gui/changelog.h
+++ b/rbutil/rbutilqt/gui/changelog.h
@@ -26,7 +26,7 @@ class Changelog : public QDialog
 {
     Q_OBJECT
 public:
-    Changelog(QWidget *parent = 0);
+    Changelog(QWidget *parent = nullptr);
 
 public slots:
     void accept(void);
diff --git a/rbutil/rbutilqt/gui/comboboxviewdelegate.h b/rbutil/rbutilqt/gui/comboboxviewdelegate.h
index 30e1ae829a..a0070bb126 100644
--- a/rbutil/rbutilqt/gui/comboboxviewdelegate.h
+++ b/rbutil/rbutilqt/gui/comboboxviewdelegate.h
@@ -22,7 +22,7 @@ class ComboBoxViewDelegate : public QStyledItemDelegate
 {
     Q_OBJECT
     public:
-        ComboBoxViewDelegate(QObject* parent = 0) : QStyledItemDelegate(parent) { }
+        ComboBoxViewDelegate(QObject* parent = nullptr) : QStyledItemDelegate(parent) { }
 
         void paint(QPainter *painter, const QStyleOptionViewItem &option,
                 const QModelIndex &index) const;
diff --git a/rbutil/rbutilqt/gui/infowidget.h b/rbutil/rbutilqt/gui/infowidget.h
index 94b79682e3..51eef0a37a 100644
--- a/rbutil/rbutilqt/gui/infowidget.h
+++ b/rbutil/rbutilqt/gui/infowidget.h
@@ -26,7 +26,7 @@ class InfoWidget : public QWidget
 {
     Q_OBJECT
     public:
-        InfoWidget(QWidget *parent = 0);
+        InfoWidget(QWidget *parent = nullptr);
 
     public slots:
         void updateInfo(void);
diff --git a/rbutil/rbutilqt/gui/manualwidget.h b/rbutil/rbutilqt/gui/manualwidget.h
index 01c1e82395..d6095d3e14 100644
--- a/rbutil/rbutilqt/gui/manualwidget.h
+++ b/rbutil/rbutilqt/gui/manualwidget.h
@@ -26,7 +26,7 @@ class ManualWidget : public QWidget
 {
     Q_OBJECT
     public:
-        ManualWidget(QWidget *parent = 0);
+        ManualWidget(QWidget *parent = nullptr);
 
     public slots:
         void downloadManual(void);
diff --git a/rbutil/rbutilqt/gui/selectiveinstallwidget.cpp b/rbutil/rbutilqt/gui/selectiveinstallwidget.cpp
index 805a432877..fafe79c8f7 100644
--- a/rbutil/rbutilqt/gui/selectiveinstallwidget.cpp
+++ b/rbutil/rbutilqt/gui/selectiveinstallwidget.cpp
@@ -45,9 +45,9 @@ SelectiveInstallWidget::SelectiveInstallWidget(QWidget* parent) : QWidget(parent
     RockboxInfo info(m_mountpoint);
     ui.bootloaderCheckbox->setChecked(!info.success());
 
-    m_logger = NULL;
-    m_zipinstaller = NULL;
-    m_themesinstaller = NULL;
+    m_logger = nullptr;
+    m_zipinstaller = nullptr;
+    m_themesinstaller = nullptr;
 
     connect(ui.installButton, SIGNAL(clicked()), this, SLOT(startInstall()));
     connect(this, SIGNAL(installSkipped(bool)), this, SLOT(continueInstall(bool)));
@@ -84,9 +84,9 @@ void SelectiveInstallWidget::updateVersion(void)
     m_blmethod = SystemInfo::platformValue(
             SystemInfo::BootloaderMethod, m_target).toString();
 
-    if(m_logger != NULL) {
+    if(m_logger != nullptr) {
         delete m_logger;
-        m_logger = NULL;
+        m_logger = nullptr;
     }
 
     // re-populate all version items
@@ -166,7 +166,7 @@ void SelectiveInstallWidget::startInstall(void)
     saveSettings();
 
     m_installStage = 0;
-    if(m_logger != NULL) delete m_logger;
+    if(m_logger != nullptr) delete m_logger;
     m_logger = new ProgressLoggerGui(this);
     QString warning = Utils::checkEnvironment(false);
     if(!warning.isEmpty())
@@ -238,7 +238,7 @@ void SelectiveInstallWidget::installBootloader(void)
         BootloaderInstallBase *bl =
             BootloaderInstallHelper::createBootloaderInstaller(this,
                     SystemInfo::platformValue(SystemInfo::BootloaderMethod).toString());
-        if(bl == NULL) {
+        if(bl == nullptr) {
             m_logger->addItem(tr("No install method known."), LOGERROR);
             m_logger->setFinished();
             return;
@@ -393,7 +393,7 @@ void SelectiveInstallWidget::installRockbox(void)
                 ServerInfo::RelCandidateUrl, m_target).toString();
 
         //! install build
-        if(m_zipinstaller != NULL) m_zipinstaller->deleteLater();
+        if(m_zipinstaller != nullptr) m_zipinstaller->deleteLater();
         m_zipinstaller = new ZipInstaller(this);
         m_zipinstaller->setUrl(url);
         m_zipinstaller->setLogSection("Rockbox (Base)");
@@ -437,7 +437,7 @@ void SelectiveInstallWidget::installFonts(void)
     fontsurl.replace("%RELEASEVER%", relversion);
 
     // create new zip installer
-    if(m_zipinstaller != NULL) m_zipinstaller->deleteLater();
+    if(m_zipinstaller != nullptr) m_zipinstaller->deleteLater();
     m_zipinstaller = new ZipInstaller(this);
     m_zipinstaller->setUrl(fontsurl);
     m_zipinstaller->setLogSection("Fonts");
@@ -460,7 +460,7 @@ void SelectiveInstallWidget::installFonts(void)
 
 void SelectiveInstallWidget::customizeThemes(void)
 {
-    if(m_themesinstaller == NULL)
+    if(m_themesinstaller == nullptr)
         m_themesinstaller = new ThemesInstallWindow(this);
 
     m_themesinstaller->setSelectOnly(true);
@@ -472,7 +472,7 @@ void SelectiveInstallWidget::installThemes(void)
 {
     if(ui.themesCheckbox->isChecked()) {
         LOG_INFO() << "installing themes";
-        if(m_themesinstaller == NULL)
+        if(m_themesinstaller == nullptr)
             m_themesinstaller = new ThemesInstallWindow(this);
 
         connect(m_themesinstaller, SIGNAL(done(bool)), this, SLOT(continueInstall(bool)));
@@ -526,7 +526,7 @@ void SelectiveInstallWidget::installGamefiles(void)
         LOG_INFO() << "installing gamefiles";
 
         // create new zip installer
-        if(m_zipinstaller != NULL) m_zipinstaller->deleteLater();
+        if(m_zipinstaller != nullptr) m_zipinstaller->deleteLater();
         m_zipinstaller = new ZipInstaller(this);
 
         m_zipinstaller->setUrl(gameUrls);
diff --git a/rbutil/rbutilqt/gui/selectiveinstallwidget.h b/rbutil/rbutilqt/gui/selectiveinstallwidget.h
index 77f4759509..799829e066 100644
--- a/rbutil/rbutilqt/gui/selectiveinstallwidget.h
+++ b/rbutil/rbutilqt/gui/selectiveinstallwidget.h
@@ -29,7 +29,7 @@ class SelectiveInstallWidget : public QWidget
 {
     Q_OBJECT
     public:
-        SelectiveInstallWidget(QWidget* parent = 0);
+        SelectiveInstallWidget(QWidget* parent = nullptr);
 
     public slots:
         void updateVersion(void);
diff --git a/rbutil/rbutilqt/installtalkwindow.h b/rbutil/rbutilqt/installtalkwindow.h
index cd15dd4bd7..f965e4cb09 100644
--- a/rbutil/rbutilqt/installtalkwindow.h
+++ b/rbutil/rbutilqt/installtalkwindow.h
@@ -32,7 +32,7 @@ class InstallTalkWindow : public QDialog
 {
     Q_OBJECT
     public:
-        InstallTalkWindow(QWidget *parent = 0);
+        InstallTalkWindow(QWidget *parent = nullptr);
 
     public slots:
         void accept(void);
diff --git a/rbutil/rbutilqt/main.cpp b/rbutil/rbutilqt/main.cpp
index eb34337b72..e9a86fd3c3 100644
--- a/rbutil/rbutilqt/main.cpp
+++ b/rbutil/rbutilqt/main.cpp
@@ -65,7 +65,7 @@ int main( int argc, char ** argv ) {
     // check for a configuration file in the program folder.
     QSettings *user;
     if(QFileInfo(absolutePath + "/RockboxUtility.ini").isFile())
-        user = new QSettings(absolutePath + "/RockboxUtility.ini", QSettings::IniFormat, 0);
+        user = new QSettings(absolutePath + "/RockboxUtility.ini", QSettings::IniFormat, nullptr);
     else user = new QSettings(QSettings::IniFormat, QSettings::UserScope, "rockbox.org", "RockboxUtility");
 
     QString applang = QLocale::system().name();
@@ -98,7 +98,7 @@ int main( int argc, char ** argv ) {
     QList<QTranslator*> translators;
     translators.append(&translator);
     translators.append(&qttrans);
-    RbUtilQt window(0);
+    RbUtilQt window(nullptr);
     RbUtilQt::translators = translators;
     window.show();
 
diff --git a/rbutil/rbutilqt/preview.h b/rbutil/rbutilqt/preview.h
index 5e43c2d9ac..7462413f0a 100644
--- a/rbutil/rbutilqt/preview.h
+++ b/rbutil/rbutilqt/preview.h
@@ -33,7 +33,7 @@ class PreviewDlg : public QDialog
     Q_OBJECT
 
 public:
-    PreviewDlg(QWidget *parent = 0);
+    PreviewDlg(QWidget *parent = nullptr);
     void setPixmap(QPixmap p);
     void setText(QString text);
 
@@ -54,7 +54,7 @@ class PreviewLabel : public QLabel
     Q_OBJECT
 
 public:
-    PreviewLabel(QWidget * parent = 0, Qt::WindowFlags f = Qt::WindowFlags());
+    PreviewLabel(QWidget * parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
 
     void setPixmap(QPixmap p);
     void setText(QString text);
diff --git a/rbutil/rbutilqt/progressloggergui.cpp b/rbutil/rbutilqt/progressloggergui.cpp
index f084fc1dc1..ed76b43d9b 100644
--- a/rbutil/rbutilqt/progressloggergui.cpp
+++ b/rbutil/rbutilqt/progressloggergui.cpp
@@ -161,7 +161,7 @@ void ProgressLoggerGui::saveErrorLog()
 
     int i=0;
     loggerTexts = "";
-    while(dp.listProgress->item(i) != NULL)
+    while(dp.listProgress->item(i) != nullptr)
     {
         loggerTexts.append(dp.listProgress->item(i)->text());
         loggerTexts.append("\n");
diff --git a/rbutil/rbutilqt/rbutilqt.cpp b/rbutil/rbutilqt/rbutilqt.cpp
index cd5bea57b9..d013a7cb58 100644
--- a/rbutil/rbutilqt/rbutilqt.cpp
+++ b/rbutil/rbutilqt/rbutilqt.cpp
@@ -371,7 +371,7 @@ void RbUtilQt::updateSettings()
                 " or review your settings."));
         configDialog();
     }
-    else if(chkConfig(0)) {
+    else if(chkConfig(nullptr)) {
         QApplication::processEvents();
         QMessageBox::critical(this, tr("Configuration error"),
             tr("Your configuration is invalid. This is most likely due "
@@ -400,7 +400,7 @@ void RbUtilQt::updateDevice()
     ui.actionRemove_bootloader->setEnabled(bootloaderUninstallable);
 
     /* Disable the whole tab widget if configuration is invalid */
-    bool configurationValid = !chkConfig(0);
+    bool configurationValid = !chkConfig(nullptr);
     ui.tabWidget->setEnabled(configurationValid);
     ui.menuA_ctions->setEnabled(configurationValid);
 
@@ -562,7 +562,7 @@ void RbUtilQt::uninstallBootloader(void)
         = BootloaderInstallHelper::createBootloaderInstaller(this,
                 SystemInfo::platformValue(SystemInfo::BootloaderMethod).toString());
 
-    if(bl == NULL) {
+    if(bl == nullptr) {
         logger->addItem(tr("No uninstall method for this target known."), LOGERROR);
         logger->setFinished();
         return;
diff --git a/rbutil/rbutilqt/rbutilqt.h b/rbutil/rbutilqt/rbutilqt.h
index cfbef8b1fc..91486e9a2d 100644
--- a/rbutil/rbutilqt/rbutilqt.h
+++ b/rbutil/rbutilqt/rbutilqt.h
@@ -42,9 +42,9 @@ class RbUtilQt : public QMainWindow
     Q_OBJECT
 
     public:
-        RbUtilQt(QWidget *parent = 0);
+        RbUtilQt(QWidget *parent = nullptr);
         static QList<QTranslator*> translators;
-        static bool chkConfig(QWidget *parent = 0);
+        static bool chkConfig(QWidget *parent = nullptr);
 
     private:
         ManualWidget *manual;
diff --git a/rbutil/rbutilqt/sysinfo.h b/rbutil/rbutilqt/sysinfo.h
index e2b3675102..3211151bf0 100644
--- a/rbutil/rbutilqt/sysinfo.h
+++ b/rbutil/rbutilqt/sysinfo.h
@@ -34,7 +34,7 @@ class Sysinfo : public QDialog
             InfoHtml,
             InfoText,
         };
-        Sysinfo(QWidget *parent = 0);
+        Sysinfo(QWidget *parent = nullptr);
 
         static QString getInfo(InfoType type = InfoHtml);
     private:
diff --git a/rbutil/rbutilqt/themesinstallwindow.cpp b/rbutil/rbutilqt/themesinstallwindow.cpp
index 6ad7c9bcae..ac31fe727c 100644
--- a/rbutil/rbutilqt/themesinstallwindow.cpp
+++ b/rbutil/rbutilqt/themesinstallwindow.cpp
@@ -63,7 +63,7 @@ ThemesInstallWindow::ThemesInstallWindow(QWidget *parent) : QDialog(parent)
         igetter.setCache(infocachedir);
     }
 
-    logger = NULL;
+    logger = nullptr;
 }
 
 ThemesInstallWindow::~ThemesInstallWindow()
@@ -347,7 +347,7 @@ void ThemesInstallWindow::install()
     }
     LOG_INFO() << "installing:" << themes;
 
-    if(logger == NULL)
+    if(logger == nullptr)
         logger = new ProgressLoggerGui(this);
     logger->show();
     QString mountPoint = RbSettings::value(RbSettings::Mountpoint).toString();
diff --git a/rbutil/rbutilqt/uninstallwindow.h b/rbutil/rbutilqt/uninstallwindow.h
index d6f477c2f3..74e149aa02 100644
--- a/rbutil/rbutilqt/uninstallwindow.h
+++ b/rbutil/rbutilqt/uninstallwindow.h
@@ -31,7 +31,7 @@ class UninstallWindow : public QDialog
 {
     Q_OBJECT
     public:
-        UninstallWindow(QWidget *parent = 0);
+        UninstallWindow(QWidget *parent = nullptr);
 
     public slots:
         void accept(void);