Use Q_NULLPTR where it is possible

Change-Id: I7261a92ea4405c8aeab7670f73e7225ed7e4d9d0
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>

6 files changed, 39 insertions, 39 deletions

diff --git a/src/serialport/qserialport_unix.cpp b/src/serialport/qserialport_unix.cpp
index 838210a..648b6fc 100644
--- a/src/serialport/qserialport_unix.cpp
+++ b/src/serialport/qserialport_unix.cpp
@@ -148,8 +148,8 @@ private:
 QSerialPortPrivate::QSerialPortPrivate(QSerialPort *q)
     : QSerialPortPrivateData(q)
     , descriptor(-1)
-    , readNotifier(0)
-    , writeNotifier(0)
+    , readNotifier(Q_NULLPTR)
+    , writeNotifier(Q_NULLPTR)
     , readPortNotifierCalled(false)
     , readPortNotifierState(false)
     , readPortNotifierStateSet(false)
@@ -227,19 +227,19 @@ void QSerialPortPrivate::close()
     if (readNotifier) {
         readNotifier->setEnabled(false);
         readNotifier->deleteLater();
-        readNotifier = 0;
+        readNotifier = Q_NULLPTR;
     }
 
     if (writeNotifier) {
         writeNotifier->setEnabled(false);
         writeNotifier->deleteLater();
-        writeNotifier = 0;
+        writeNotifier = Q_NULLPTR;
     }
 
     if (qt_safe_close(descriptor) == -1)
         q->setError(decodeSystemError());
 
-    lockFileScopedPointer.reset(0);
+    lockFileScopedPointer.reset(Q_NULLPTR);
 
     descriptor = -1;
     pendingBytesWritten = 0;
diff --git a/src/serialport/qserialport_win.cpp b/src/serialport/qserialport_win.cpp
index fabfac2..0e9f187 100644
--- a/src/serialport/qserialport_win.cpp
+++ b/src/serialport/qserialport_win.cpp
@@ -94,13 +94,13 @@ QSerialPortPrivate::QSerialPortPrivate(QSerialPort *q)
     , communicationNotifier(new QWinEventNotifier(q))
     , readCompletionNotifier(new QWinEventNotifier(q))
     , writeCompletionNotifier(new QWinEventNotifier(q))
-    , startAsyncWriteTimer(0)
+    , startAsyncWriteTimer(Q_NULLPTR)
     , originalEventMask(0)
     , triggeredEventMask(0)
     , actualBytesToWrite(0)
 {
     ::ZeroMemory(&communicationOverlapped, sizeof(communicationOverlapped));
-    communicationOverlapped.hEvent = ::CreateEvent(NULL, FALSE, FALSE, NULL);
+    communicationOverlapped.hEvent = ::CreateEvent(Q_NULLPTR, FALSE, FALSE, Q_NULLPTR);
     if (!communicationOverlapped.hEvent)
         q->setError(decodeSystemError());
     else {
@@ -109,7 +109,7 @@ QSerialPortPrivate::QSerialPortPrivate(QSerialPort *q)
     }
 
     ::ZeroMemory(&readCompletionOverlapped, sizeof(readCompletionOverlapped));
-    readCompletionOverlapped.hEvent = ::CreateEvent(NULL, FALSE, FALSE, NULL);
+    readCompletionOverlapped.hEvent = ::CreateEvent(Q_NULLPTR, FALSE, FALSE, Q_NULLPTR);
     if (!readCompletionOverlapped.hEvent)
         q->setError(decodeSystemError());
     else {
@@ -118,7 +118,7 @@ QSerialPortPrivate::QSerialPortPrivate(QSerialPort *q)
     }
 
     ::ZeroMemory(&writeCompletionOverlapped, sizeof(writeCompletionOverlapped));
-    writeCompletionOverlapped.hEvent = ::CreateEvent(NULL, FALSE, FALSE, NULL);
+    writeCompletionOverlapped.hEvent = ::CreateEvent(Q_NULLPTR, FALSE, FALSE, Q_NULLPTR);
     if (!writeCompletionOverlapped.hEvent)
         q->setError(decodeSystemError());
     else {
@@ -152,7 +152,7 @@ bool QSerialPortPrivate::open(QIODevice::OpenMode mode)
         desiredAccess |= GENERIC_WRITE;
 
     handle = ::CreateFile(reinterpret_cast<const wchar_t*>(systemLocation.utf16()),
-                              desiredAccess, 0, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
+                              desiredAccess, 0, Q_NULLPTR, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, Q_NULLPTR);
 
     if (handle == INVALID_HANDLE_VALUE) {
         q->setError(decodeSystemError());
@@ -223,9 +223,9 @@ QSerialPort::PinoutSignals QSerialPortPrivate::pinoutSignals()
         ret |= QSerialPort::DataCarrierDetectSignal;
 
     DWORD bytesReturned = 0;
-    if (!::DeviceIoControl(handle, IOCTL_SERIAL_GET_DTRRTS, NULL, 0,
+    if (!::DeviceIoControl(handle, IOCTL_SERIAL_GET_DTRRTS, Q_NULLPTR, 0,
                           &modemStat, sizeof(modemStat),
-                          &bytesReturned, NULL)) {
+                          &bytesReturned, Q_NULLPTR)) {
         q->setError(decodeSystemError());
         return ret;
     }
@@ -348,7 +348,7 @@ bool QSerialPortPrivate::waitForReadyRead(int msecs)
     stopWatch.start();
 
     do {
-        HANDLE triggeredEvent = 0;
+        HANDLE triggeredEvent = Q_NULLPTR;
         if (!waitAnyEvent(timeoutValue(msecs, stopWatch.elapsed()), &triggeredEvent) || !triggeredEvent)
             return false;
 
@@ -391,7 +391,7 @@ bool QSerialPortPrivate::waitForBytesWritten(int msecs)
     stopWatch.start();
 
     forever {
-        HANDLE triggeredEvent = 0;
+        HANDLE triggeredEvent = Q_NULLPTR;
         if (!waitAnyEvent(timeoutValue(msecs, stopWatch.elapsed()), &triggeredEvent) || !triggeredEvent)
             return false;
 
@@ -598,7 +598,7 @@ bool QSerialPortPrivate::startAsyncRead()
     }
 
     initializeOverlappedStructure(readCompletionOverlapped);
-    if (::ReadFile(handle, readChunkBuffer.data(), bytesToRead, NULL, &readCompletionOverlapped)) {
+    if (::ReadFile(handle, readChunkBuffer.data(), bytesToRead, Q_NULLPTR, &readCompletionOverlapped)) {
         readStarted = true;
         return true;
     }
@@ -629,7 +629,7 @@ bool QSerialPortPrivate::_q_startAsyncWrite()
     const int writeBytes = writeBuffer.nextDataBlockSize();
     if (!::WriteFile(handle, writeBuffer.readPointer(),
                      writeBytes,
-                     NULL, &writeCompletionOverlapped)) {
+                     Q_NULLPTR, &writeCompletionOverlapped)) {
 
         QSerialPort::SerialPortError error = decodeSystemError();
         if (error != QSerialPort::NoError) {
@@ -709,7 +709,7 @@ void QSerialPortPrivate::handleLineStatusErrors()
     Q_Q(QSerialPort);
 
     DWORD errors = 0;
-    if (!::ClearCommError(handle, &errors, NULL)) {
+    if (!::ClearCommError(handle, &errors, Q_NULLPTR)) {
         q->setError(decodeSystemError());
         return;
     }
diff --git a/src/serialport/qserialport_wince.cpp b/src/serialport/qserialport_wince.cpp
index d7441e6..99cc603 100644
--- a/src/serialport/qserialport_wince.cpp
+++ b/src/serialport/qserialport_wince.cpp
@@ -183,7 +183,7 @@ QSerialPortPrivate::QSerialPortPrivate(QSerialPort *q)
     : QSerialPortPrivateData(q)
     , handle(INVALID_HANDLE_VALUE)
     , parityErrorOccurred(false)
-    , eventNotifier(0)
+    , eventNotifier(Q_NULLPTR)
 {
 }
 
@@ -204,7 +204,7 @@ bool QSerialPortPrivate::open(QIODevice::OpenMode mode)
     }
 
     handle = ::CreateFile(reinterpret_cast<const wchar_t*>(systemLocation.utf16()),
-                              desiredAccess, 0, NULL, OPEN_EXISTING, 0, NULL);
+                              desiredAccess, 0, Q_NULLPTR, OPEN_EXISTING, 0, Q_NULLPTR);
 
     if (handle == INVALID_HANDLE_VALUE) {
         q->setError(decodeSystemError());
@@ -222,7 +222,7 @@ void QSerialPortPrivate::close()
 {
     if (eventNotifier) {
         eventNotifier->deleteLater();
-        eventNotifier = 0;
+        eventNotifier = Q_NULLPTR;
     }
 
     if (settingsRestoredOnClose) {
@@ -257,9 +257,9 @@ QSerialPort::PinoutSignals QSerialPortPrivate::pinoutSignals()
         ret |= QSerialPort::DataCarrierDetectSignal;
 
     DWORD bytesReturned = 0;
-    if (!::DeviceIoControl(handle, IOCTL_SERIAL_GET_DTRRTS, NULL, 0,
+    if (!::DeviceIoControl(handle, IOCTL_SERIAL_GET_DTRRTS, Q_NULLPTR, 0,
                           &modemStat, sizeof(modemStat),
-                          &bytesReturned, NULL)) {
+                          &bytesReturned, Q_NULLPTR)) {
         q->setError(decodeSystemError());
         return ret;
     }
@@ -513,7 +513,7 @@ bool QSerialPortPrivate::notifyRead()
     char *ptr = readBuffer.reserve(bytesToRead);
 
     DWORD readBytes = 0;
-    BOOL sucessResult = ::ReadFile(handle, ptr, bytesToRead, &readBytes, NULL);
+    BOOL sucessResult = ::ReadFile(handle, ptr, bytesToRead, &readBytes, Q_NULLPTR);
 
     if (!sucessResult) {
         readBuffer.truncate(bytesToRead);
@@ -559,7 +559,7 @@ bool QSerialPortPrivate::notifyWrite()
     const char *ptr = writeBuffer.readPointer();
 
     DWORD bytesWritten = 0;
-    if (!::WriteFile(handle, ptr, nextSize, &bytesWritten, NULL)) {
+    if (!::WriteFile(handle, ptr, nextSize, &bytesWritten, Q_NULLPTR)) {
         q->setError(QSerialPort::WriteError);
         return false;
     }
@@ -595,7 +595,7 @@ void QSerialPortPrivate::processIoErrors(bool error)
     }
 
     DWORD errors = 0;
-    if (!::ClearCommError(handle, &errors, NULL)) {
+    if (!::ClearCommError(handle, &errors, Q_NULLPTR)) {
         q->setError(decodeSystemError());
         return;
     }
@@ -738,7 +738,7 @@ bool QSerialPortPrivate::waitForReadOrWrite(bool *selectForRead, bool *selectFor
     // breaker can work out before you call a method WaitCommEvent()
     // and so it will loop forever!
     WaitCommEventBreaker breaker(handle, qMax(msecs, 0));
-    ::WaitCommEvent(handle, &eventMask, NULL);
+    ::WaitCommEvent(handle, &eventMask, Q_NULLPTR);
     breaker.stop();
 
     if (breaker.isWorked()) {
diff --git a/src/serialport/qserialportinfo.cpp b/src/serialport/qserialportinfo.cpp
index ced4361..26b275d 100644
--- a/src/serialport/qserialportinfo.cpp
+++ b/src/serialport/qserialportinfo.cpp
@@ -72,7 +72,7 @@ QSerialPortInfo::QSerialPortInfo()
     Constructs a copy of \a other.
 */
 QSerialPortInfo::QSerialPortInfo(const QSerialPortInfo &other)
-    : d_ptr(other.d_ptr ? new QSerialPortInfoPrivate(*other.d_ptr) : 0)
+    : d_ptr(other.d_ptr ? new QSerialPortInfoPrivate(*other.d_ptr) : Q_NULLPTR)
 {
 }
 
diff --git a/src/serialport/qserialportinfo_win.cpp b/src/serialport/qserialportinfo_win.cpp
index e595964..493c4d0 100644
--- a/src/serialport/qserialportinfo_win.cpp
+++ b/src/serialport/qserialportinfo_win.cpp
@@ -74,7 +74,7 @@ static QString toStringAndTrimNullCharacter(const QByteArray &buffer)
 
 static QStringList portNamesFromHardwareDeviceMap()
 {
-    HKEY hKey = 0;
+    HKEY hKey = Q_NULLPTR;
     if (::RegOpenKeyEx(HKEY_LOCAL_MACHINE, L"HARDWARE\\DEVICEMAP\\SERIALCOMM", 0, KEY_QUERY_VALUE, &hKey) != ERROR_SUCCESS)
         return QStringList();
 
@@ -88,7 +88,7 @@ static QStringList portNamesFromHardwareDeviceMap()
     forever {
         DWORD requiredValueNameChars = maximumValueNameInChars;
         const LONG ret = ::RegEnumValue(hKey, index, reinterpret_cast<wchar_t *>(outputValueName.data()), &requiredValueNameChars,
-                                        NULL, NULL, reinterpret_cast<unsigned char *>(outputBuffer.data()), &requiredDataBytes);
+                                        Q_NULLPTR, Q_NULLPTR, reinterpret_cast<unsigned char *>(outputBuffer.data()), &requiredDataBytes);
         if (ret == ERROR_MORE_DATA) {
             outputBuffer.resize(requiredDataBytes);
         } else if (ret == ERROR_SUCCESS) {
@@ -172,7 +172,7 @@ static QString devicePortName(HDEVINFO deviceInfoSet, PSP_DEVINFO_DATA deviceInf
         DWORD dataType = 0;
         QByteArray outputBuffer;
         forever {
-            const LONG ret = ::RegQueryValueEx(key, reinterpret_cast<const wchar_t *>(portNameKey.utf16()), NULL, &dataType,
+            const LONG ret = ::RegQueryValueEx(key, reinterpret_cast<const wchar_t *>(portNameKey.utf16()), Q_NULLPTR, &dataType,
                                                reinterpret_cast<unsigned char *>(outputBuffer.data()), &bytesRequired);
             if (ret == ERROR_MORE_DATA) {
                 outputBuffer.resize(bytesRequired);
@@ -293,7 +293,7 @@ QList<QSerialPortInfo> QSerialPortInfo::availablePorts()
     QList<QSerialPortInfo> serialPortInfoList;
 
     foreach (const GuidFlagsPair &uniquePair, guidFlagsPairs()) {
-        const HDEVINFO deviceInfoSet = ::SetupDiGetClassDevs(reinterpret_cast<const GUID *>(&uniquePair.first), NULL, 0, uniquePair.second);
+        const HDEVINFO deviceInfoSet = ::SetupDiGetClassDevs(reinterpret_cast<const GUID *>(&uniquePair.first), Q_NULLPTR, Q_NULLPTR, uniquePair.second);
         if (deviceInfoSet == INVALID_HANDLE_VALUE)
             return serialPortInfoList;
 
@@ -354,7 +354,7 @@ QList<qint32> QSerialPortInfo::standardBaudRates()
 bool QSerialPortInfo::isBusy() const
 {
     const HANDLE handle = ::CreateFile(reinterpret_cast<const wchar_t*>(systemLocation().utf16()),
-                                           GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
+                                           GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, Q_NULLPTR);
 
     if (handle == INVALID_HANDLE_VALUE) {
         if (::GetLastError() == ERROR_ACCESS_DENIED)
@@ -368,7 +368,7 @@ bool QSerialPortInfo::isBusy() const
 bool QSerialPortInfo::isValid() const
 {
     const HANDLE handle = ::CreateFile(reinterpret_cast<const wchar_t*>(systemLocation().utf16()),
-                                           GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
+                                           GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, Q_NULLPTR);
 
     if (handle == INVALID_HANDLE_VALUE) {
         if (::GetLastError() != ERROR_ACCESS_DENIED)
diff --git a/src/serialport/qserialportinfo_wince.cpp b/src/serialport/qserialportinfo_wince.cpp
index 5a7ce62..78439c9 100644
--- a/src/serialport/qserialportinfo_wince.cpp
+++ b/src/serialport/qserialportinfo_wince.cpp
@@ -46,7 +46,7 @@ static QString findDescription(HKEY parentKeyHandle, const QString &subKey)
     const static QString valueName(QStringLiteral("FriendlyName"));
 
     QString result;
-    HKEY hSubKey = 0;
+    HKEY hSubKey = Q_NULLPTR;
     LONG res = ::RegOpenKeyEx(parentKeyHandle, reinterpret_cast<const wchar_t *>(subKey.utf16()),
                               0, KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS, &hSubKey);
 
@@ -55,12 +55,12 @@ static QString findDescription(HKEY parentKeyHandle, const QString &subKey)
         DWORD dataType = 0;
         DWORD dataSize = 0;
         res = ::RegQueryValueEx(hSubKey, reinterpret_cast<const wchar_t *>(valueName.utf16()),
-                                NULL, &dataType, NULL, &dataSize);
+                                Q_NULLPTR, &dataType, Q_NULLPTR, &dataSize);
 
         if (res == ERROR_SUCCESS) {
             QByteArray data(dataSize, 0);
             res = ::RegQueryValueEx(hSubKey, reinterpret_cast<const wchar_t *>(valueName.utf16()),
-                                    NULL, NULL,
+                                    Q_NULLPTR, Q_NULLPTR,
                                     reinterpret_cast<unsigned char *>(data.data()),
                                     &dataSize);
 
@@ -81,7 +81,7 @@ static QString findDescription(HKEY parentKeyHandle, const QString &subKey)
             QByteArray data(dataSize, 0);
             while (::RegEnumKeyEx(hSubKey, index++,
                                   reinterpret_cast<wchar_t *>(data.data()), &dataSize,
-                                  NULL, NULL, NULL, NULL) == ERROR_SUCCESS) {
+                                  Q_NULLPTR, Q_NULLPTR, Q_NULLPTR, Q_NULLPTR) == ERROR_SUCCESS) {
 
                 result = findDescription(hSubKey,
                                          QString::fromUtf16(reinterpret_cast<ushort *>(data.data()), dataSize));
@@ -128,7 +128,7 @@ QList<qint32> QSerialPortInfo::standardBaudRates()
 bool QSerialPortInfo::isBusy() const
 {
     const HANDLE handle = ::CreateFile(reinterpret_cast<const wchar_t*>(systemLocation().utf16()),
-                                           GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
+                                           GENERIC_READ | GENERIC_WRITE, 0, Q_NULLPTR, OPEN_EXISTING, 0, Q_NULLPTR);
 
     if (handle == INVALID_HANDLE_VALUE) {
         if (::GetLastError() == ERROR_ACCESS_DENIED)
@@ -142,7 +142,7 @@ bool QSerialPortInfo::isBusy() const
 bool QSerialPortInfo::isValid() const
 {
     const HANDLE handle = ::CreateFile(reinterpret_cast<const wchar_t*>(systemLocation().utf16()),
-                                           GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
+                                           GENERIC_READ | GENERIC_WRITE, 0, Q_NULLPTR, OPEN_EXISTING, 0, Q_NULLPTR);
 
     if (handle == INVALID_HANDLE_VALUE) {
         if (::GetLastError() != ERROR_ACCESS_DENIED)