Fixed many spelling errors.

51 files changed, 69 insertions, 69 deletions

diff --git a/src/activeqt/container/qaxwidget.cpp b/src/activeqt/container/qaxwidget.cpp
index 7afce5b..c2108ba 100644
--- a/src/activeqt/container/qaxwidget.cpp
+++ b/src/activeqt/container/qaxwidget.cpp
@@ -1008,7 +1008,7 @@ HRESULT WINAPI QAxClientSite::TranslateAccelerator(LPMSG lpMsg, DWORD /*grfModif
         }
     }
     // ActiveQt based in-processes-servers will handle the event properly, so
-    // we dont need to send this key event to the host.
+    // we don't need to send this key event to the host.
     return S_OK;
 }
 
diff --git a/src/corelib/arch/armv6/qatomic_generic_armv6.cpp b/src/corelib/arch/armv6/qatomic_generic_armv6.cpp
index 39d966a..444d3d3 100644
--- a/src/corelib/arch/armv6/qatomic_generic_armv6.cpp
+++ b/src/corelib/arch/armv6/qatomic_generic_armv6.cpp
@@ -38,7 +38,7 @@
 ** $QT_END_LICENSE$
 **
 ** This file implements the generic atomics interface using ARMv6 assembly
-** instructions. It is more efficent than the inline versions when Qt is
+** instructions. It is more efficient than the inline versions when Qt is
 ** built for the THUMB instruction set, as the required instructions are
 ** only available in ARM state.
 ****************************************************************************/
diff --git a/src/corelib/arch/symbian/heap_hybrid.cpp b/src/corelib/arch/symbian/heap_hybrid.cpp
index 91faaed..5d2b2b6 100644
--- a/src/corelib/arch/symbian/heap_hybrid.cpp
+++ b/src/corelib/arch/symbian/heap_hybrid.cpp
@@ -134,7 +134,7 @@ The constant can be changed at ROM build time using patchdata OBY keyword.
 
 @deprecated Patching this constant no longer has any effect.
 */
-#ifdef __X86GCC__	// For X86GCC we dont use the proper data import attribute
+#ifdef __X86GCC__	// For X86GCC we don't use the proper data import attribute
 #undef IMPORT_D		// since the constants are not really imported. GCC doesn't 
 #define IMPORT_D	// allow imports from self.
 #endif
@@ -451,7 +451,7 @@ TInt RHybridHeap::ConstructLock(TUint32 aMode)
 
 void RHybridHeap::Init(TInt aBitmapSlab, TInt aPagePower)
 {
-	/*Moved code which does initilization */
+	/*Moved code which does initialization */
 	iTop  = (TUint8*)this + iMinLength;
 	iBase = Ceiling(iBase, ECellAlignment);	// Align iBase address 
 	
@@ -874,7 +874,7 @@ available in the largest free block.
 Note that this function exists mainly for compatibility reasons.  In a modern
 heap implementation such as that present in Symbian it is not appropriate to
 concern oneself with details such as the amount of free memory available on a
-heap and its largeset free block, because the way that a modern heap implmentation
+heap and its largeset free block, because the way that a modern heap implementation
 works is not simple.  The amount of available virtual memory != physical memory
 and there are multiple allocation strategies used internally, which makes all
 memory usage figures "fuzzy" at best.
@@ -1616,7 +1616,7 @@ void* RHybridHeap::DlMalloc(size_t bytes)
 void RHybridHeap::DlFree(void* mem)
 {
 	/*
-	Consolidate freed chunks with preceeding or succeeding bordering
+	Consolidate freed chunks with preceding or succeeding bordering
 	free chunks, if they exist, and then place in a bin.	Intermixed
 	with special cases for iTop, iDv, mmapped chunks, and usage errors.
 */
diff --git a/src/corelib/codecs/qutfcodec.cpp b/src/corelib/codecs/qutfcodec.cpp
index f747bf7..031baa3 100644
--- a/src/corelib/codecs/qutfcodec.cpp
+++ b/src/corelib/codecs/qutfcodec.cpp
@@ -195,7 +195,7 @@ QString QUtf8::convertToUnicode(const char *chars, int len, QTextCodec::Converte
                     // utf-8 bom composes into 0xfeff code point
                     bool nonCharacter;
                     if (!headerdone && uc == 0xfeff) {
-                        // dont do anything, just skip the BOM
+                        // don't do anything, just skip the BOM
                     } else if (!(nonCharacter = isUnicodeNonCharacter(uc)) && uc > 0xffff && uc < 0x110000) {
                         // surrogate pair
                         Q_ASSERT((qch - (ushort*)result.unicode()) + 2 < result.length());
diff --git a/src/corelib/io/qiodevice_p.h b/src/corelib/io/qiodevice_p.h
index 1dd51ea..8b77da5 100644
--- a/src/corelib/io/qiodevice_p.h
+++ b/src/corelib/io/qiodevice_p.h
@@ -68,7 +68,7 @@ QT_BEGIN_NAMESPACE
 #define QIODEVICE_BUFFERSIZE Q_INT64_C(16384)
 #endif
 
-// This is QIODevice's read buffer, optimised for read(), isEmpty() and getChar()
+// This is QIODevice's read buffer, optimized for read(), isEmpty() and getChar()
 class QIODevicePrivateLinearBuffer
 {
 public:
diff --git a/src/corelib/io/qsettings.cpp b/src/corelib/io/qsettings.cpp
index edd6d2b..53af822 100644
--- a/src/corelib/io/qsettings.cpp
+++ b/src/corelib/io/qsettings.cpp
@@ -3506,7 +3506,7 @@ void QSettings::setPath(Format format, Scope scope, const QString &path)
     \threadsafe
 
     Registers a custom storage format. On success, returns a special
-    Format value that can then be passed to the QSettings constuctor.
+    Format value that can then be passed to the QSettings constructor.
     On failure, returns InvalidFormat.
 
     The \a extension is the file
diff --git a/src/corelib/tools/qbytearray.cpp b/src/corelib/tools/qbytearray.cpp
index b0c784e..fac0f45 100644
--- a/src/corelib/tools/qbytearray.cpp
+++ b/src/corelib/tools/qbytearray.cpp
@@ -1812,7 +1812,7 @@ QByteArray &QByteArray::replace(int pos, int len, const QByteArray &after)
         return *this;
     } else {
         QByteArray copy(after);
-        // ### optimise me
+        // ### optimize me
         remove(pos, len);
         return insert(pos, copy);
     }
@@ -1853,7 +1853,7 @@ QByteArray &QByteArray::replace(int pos, int len, const char *after, int alen)
     }
 }
 
-// ### optimise all other replace method, by offering
+// ### optimize all other replace method, by offering
 // QByteArray::replace(const char *before, int blen, const char *after, int alen)
 
 /*!
diff --git a/src/dbus/qdbusabstractinterface.cpp b/src/dbus/qdbusabstractinterface.cpp
index 4e9c1ad..0ea8c8d 100644
--- a/src/dbus/qdbusabstractinterface.cpp
+++ b/src/dbus/qdbusabstractinterface.cpp
@@ -560,7 +560,7 @@ void QDBusAbstractInterface::connectNotify(const char *signal)
     if (!d->isValid)
         return;
 
-    // we end up recursing here, so optimise away
+    // we end up recursing here, so optimize away
     if (qstrcmp(signal + 1, "destroyed(QObject*)") == 0)
         return;
 
diff --git a/src/dbus/qdbusargument.h b/src/dbus/qdbusargument.h
index 30f2cda..84d0349 100644
--- a/src/dbus/qdbusargument.h
+++ b/src/dbus/qdbusargument.h
@@ -172,7 +172,7 @@ template<typename T> inline T qdbus_cast(const QVariant &v
         return qvariant_cast<T>(v);
 }
 
-// specialise for QVariant, allowing it to be used in place of QDBusVariant
+// specialize for QVariant, allowing it to be used in place of QDBusVariant
 template<> inline QVariant qdbus_cast<QVariant>(const QDBusArgument &arg, QVariant *)
 {
     QDBusVariant item;
diff --git a/src/dbus/qdbusintegrator.cpp b/src/dbus/qdbusintegrator.cpp
index 31588e7..a5d8ada 100644
--- a/src/dbus/qdbusintegrator.cpp
+++ b/src/dbus/qdbusintegrator.cpp
@@ -801,7 +801,7 @@ bool QDBusConnectionPrivate::activateCall(QObject* object, int flags, const QDBu
         ++cacheIt;
     if (cacheIt == slotCache.hash.constEnd() || cacheIt.key() != cacheKey)
     {
-        // not cached, analyse the meta object
+        // not cached, analyze the meta object
         const QMetaObject *mo = object->metaObject();
         QByteArray memberName = msg.member().toUtf8();
 
diff --git a/src/dbus/qdbusmarshaller.cpp b/src/dbus/qdbusmarshaller.cpp
index 8b174a1..e620152 100644
--- a/src/dbus/qdbusmarshaller.cpp
+++ b/src/dbus/qdbusmarshaller.cpp
@@ -507,7 +507,7 @@ bool QDBusMarshaller::appendCrossMarshalling(QDBusDemarshaller *demarshaller)
     if (code == DBUS_TYPE_ARRAY) {
         int element = q_dbus_message_iter_get_element_type(&demarshaller->iterator);
         if (q_dbus_type_is_fixed(element)) {
-            // another optimisation: fixed size arrays
+            // another optimization: fixed size arrays
             // code is exactly like QDBusDemarshaller::toByteArray
             DBusMessageIter sub;
             q_dbus_message_iter_recurse(&demarshaller->iterator, &sub);
diff --git a/src/dbus/qdbusmessage.cpp b/src/dbus/qdbusmessage.cpp
index d838e37..10b2768 100644
--- a/src/dbus/qdbusmessage.cpp
+++ b/src/dbus/qdbusmessage.cpp
@@ -292,7 +292,7 @@ QDBusMessage QDBusMessagePrivate::makeLocal(const QDBusConnectionPrivate &conn,
     }
 
     // no complex types seen
-    // optimise by using the variant list itself
+    // optimize by using the variant list itself
     QDBusMessage retval;
     QDBusMessagePrivate *d = retval.d_ptr;
     d->arguments = asSent.d_ptr->arguments;
@@ -452,7 +452,7 @@ QDBusMessage QDBusMessage::createReply(const QVariantList &arguments) const
         d_ptr->localReply = new QDBusMessage(reply); // keep an internal copy
     }
 
-    // the reply must have a msg or be a local-loop optimisation
+    // the reply must have a msg or be a local-loop optimization
     Q_ASSERT(reply.d_ptr->reply || reply.d_ptr->localMessage);
     return reply;
 }
@@ -471,7 +471,7 @@ QDBusMessage QDBusMessage::createErrorReply(const QString name, const QString &m
         d_ptr->localReply = new QDBusMessage(reply); // keep an internal copy
     }
 
-    // the reply must have a msg or be a local-loop optimisation
+    // the reply must have a msg or be a local-loop optimization
     Q_ASSERT(reply.d_ptr->reply || reply.d_ptr->localMessage);
     return reply;
 }
diff --git a/src/dbus/qdbusmetatype.cpp b/src/dbus/qdbusmetatype.cpp
index cb377cb..821a227 100644
--- a/src/dbus/qdbusmetatype.cpp
+++ b/src/dbus/qdbusmetatype.cpp
@@ -242,7 +242,7 @@ bool QDBusMetaType::marshall(QDBusArgument &arg, int id, const void *data)
         QReadLocker locker(customTypesLock());
         QVector<QDBusCustomTypeInfo> *ct = customTypes();
         if (id >= ct->size())
-            return false;       // non-existant
+            return false;       // non-existent
 
         const QDBusCustomTypeInfo &info = (*ct).at(id);
         if (!info.marshall) {
@@ -271,7 +271,7 @@ bool QDBusMetaType::demarshall(const QDBusArgument &arg, int id, void *data)
         QReadLocker locker(customTypesLock());
         QVector<QDBusCustomTypeInfo> *ct = customTypes();
         if (id >= ct->size())
-            return false;       // non-existant
+            return false;       // non-existent
 
         const QDBusCustomTypeInfo &info = (*ct).at(id);
         if (!info.demarshall) {
diff --git a/src/dbus/qdbuspendingreply.h b/src/dbus/qdbuspendingreply.h
index 61e561e..918a46c 100644
--- a/src/dbus/qdbuspendingreply.h
+++ b/src/dbus/qdbuspendingreply.h
@@ -85,7 +85,7 @@ namespace QDBusPendingReplyTypes {
 
     template<typename T1> inline int metaTypeFor(T1 * = 0)
     { return qMetaTypeId<T1>(); }
-    // specialise for QVariant, allowing it to be used in place of QDBusVariant
+    // specialize for QVariant, allowing it to be used in place of QDBusVariant
     template<> inline int metaTypeFor<QVariant>(QVariant *)
     { return qMetaTypeId<QDBusVariant>(); }
 
diff --git a/src/dbus/qdbusutil.cpp b/src/dbus/qdbusutil.cpp
index 2fcdc73..b7b0407 100644
--- a/src/dbus/qdbusutil.cpp
+++ b/src/dbus/qdbusutil.cpp
@@ -309,7 +309,7 @@ namespace QDBusUtil
         Returns true if \a connName is a valid unique connection name.
 
         Unique connection names start with a colon (":") and are followed by a list of dot-separated
-        components composed of ASCII letters, digits, the hypen or the underscore ("_") character.
+        components composed of ASCII letters, digits, the hyphen or the underscore ("_") character.
     */
     bool isValidUniqueConnectionName(const QString &connName)
     {
diff --git a/src/declarative/graphicsitems/qdeclarativemousearea.cpp b/src/declarative/graphicsitems/qdeclarativemousearea.cpp
index 1533d55..1b7dce0 100644
--- a/src/declarative/graphicsitems/qdeclarativemousearea.cpp
+++ b/src/declarative/graphicsitems/qdeclarativemousearea.cpp
@@ -335,7 +335,7 @@ QDeclarativeMouseAreaPrivate::~QDeclarativeMouseAreaPrivate()
 
     If the \e accepted property of the \l {MouseEvent}{mouse} parameter is set to false
     in the handler, the onPressed/onReleased/onClicked handlers will be called for the second
-    click; otherwise they are supressed.  The accepted property defaults to true.
+    click; otherwise they are suppressed.  The accepted property defaults to true.
 */
 
 /*!
diff --git a/src/declarative/qml/qdeclarativeengine.cpp b/src/declarative/qml/qdeclarativeengine.cpp
index c3fdf36..0c99ea8 100644
--- a/src/declarative/qml/qdeclarativeengine.cpp
+++ b/src/declarative/qml/qdeclarativeengine.cpp
@@ -878,7 +878,7 @@ void QDeclarativeEngine::setContextForObject(QObject *object, QDeclarativeContex
   created by calling QDeclarativeCompnent::create() or
   QDeclarativeComponent::beginCreate() which have CppOwnership by
   default.  The ownership of these root-level objects is considered to
-  have been transfered to the C++ caller.
+  have been transferred to the C++ caller.
 
   Objects not-created by QML have CppOwnership by default.  The
   exception to this is objects returned from a C++ method call.  The
diff --git a/src/declarative/util/qdeclarativeanimation_p_p.h b/src/declarative/util/qdeclarativeanimation_p_p.h
index e38580c..6305fbd 100644
--- a/src/declarative/util/qdeclarativeanimation_p_p.h
+++ b/src/declarative/util/qdeclarativeanimation_p_p.h
@@ -328,7 +328,7 @@ public:
 
     QDeclarativeBulkValueAnimator *va;
 
-    // for animations that dont use the QDeclarativeBulkValueAnimator
+    // for animations that don't use the QDeclarativeBulkValueAnimator
     QDeclarativeStateActions *actions;
 
     static QVariant interpolateVariant(const QVariant &from, const QVariant &to, qreal progress);
diff --git a/src/gui/accessible/qaccessible_mac_p.h b/src/gui/accessible/qaccessible_mac_p.h
index 4ee3a2d..e417cb6 100644
--- a/src/gui/accessible/qaccessible_mac_p.h
+++ b/src/gui/accessible/qaccessible_mac_p.h
@@ -122,7 +122,7 @@ private:
     QAccessibleInterfaceWrapper wrapper class.
 
     It has the same API as QAccessibleInterface, minus the child parameter
-    in the funcitons.
+    in the functions.
 */
 class Q_AUTOTEST_EXPORT QAInterface : public QAccessible
 {
@@ -432,7 +432,7 @@ public:
 /*
     QAccessibleHierarchyManager bridges the Mac and Qt accessibility hierarchies.
     There is a one-to-one relationship between QAElements on the Mac side
-    and QAInterfaces on the Qt side, and this class provies lookup funcitons
+    and QAInterfaces on the Qt side, and this class provides lookup functions
     that translates between these to items.
 
     The identity of a QAInterface is determined by its QAccessibleInterface and
diff --git a/src/gui/embedded/qcopchannel_qws.cpp b/src/gui/embedded/qcopchannel_qws.cpp
index 5786866..0d9d9d3 100644
--- a/src/gui/embedded/qcopchannel_qws.cpp
+++ b/src/gui/embedded/qcopchannel_qws.cpp
@@ -502,7 +502,7 @@ void QCopChannel::answer(QWSClient *cl, const QString& ch,
             bool known = qcopServerMap && qcopServerMap->contains(c)
                         && !((*qcopServerMap)[c]).isEmpty();
             // Yes, it's a typo, it's not user-visible, and we choose not to fix it for compatibility
-            QLatin1String ans = QLatin1String(known ? "known" : "unkown");
+            QLatin1String ans = QLatin1String(known ? "known" : "unknown");
             QWSServerPrivate::sendQCopEvent(cl, QLatin1String(""),
                                             ans, data, true);
             return;
diff --git a/src/gui/embedded/qtransportauth_qws.cpp b/src/gui/embedded/qtransportauth_qws.cpp
index 9a50702..90e90d1 100644
--- a/src/gui/embedded/qtransportauth_qws.cpp
+++ b/src/gui/embedded/qtransportauth_qws.cpp
@@ -445,7 +445,7 @@ QIODevice *QTransportAuth::passThroughByClient( QWSClient *client ) const
 /*!
   \internal
   Return a QIODevice pointer (to an internal QBuffer) which can be used
-  to receive data after authorisation on transport \a d.
+  to receive data after authorization on transport \a d.
 
   The return QIODevice will act as a pass-through.
 
@@ -468,7 +468,7 @@ QAuthDevice *QTransportAuth::recvBuf( QTransportAuth::Data *data, QIODevice *iod
 
 /*!
   Return a QIODevice pointer (to an internal QBuffer) which can be used
-  to write data onto, for authorisation on transport \a d.
+  to write data onto, for authorization on transport \a d.
 
   The return QIODevice will act as a pass-through.
 
diff --git a/src/gui/graphicsview/qgraphicsitem_p.h b/src/gui/graphicsview/qgraphicsitem_p.h
index 8480c19..1b7aa97 100644
--- a/src/gui/graphicsview/qgraphicsitem_p.h
+++ b/src/gui/graphicsview/qgraphicsitem_p.h
@@ -722,7 +722,7 @@ public:
 
 /*!
     Returns true if \a item1 is on top of \a item2.
-    The items dont need to be siblings.
+    The items don't need to be siblings.
 
     \internal
 */
@@ -776,7 +776,7 @@ inline bool qt_closestItemFirst(const QGraphicsItem *item1, const QGraphicsItem
 
 /*!
     Returns true if \a item2 is on top of \a item1.
-    The items dont need to be siblings.
+    The items don't need to be siblings.
 
     \internal
 */
diff --git a/src/gui/inputmethod/qinputcontextfactory.cpp b/src/gui/inputmethod/qinputcontextfactory.cpp
index 865c1b2..afe5095 100644
--- a/src/gui/inputmethod/qinputcontextfactory.cpp
+++ b/src/gui/inputmethod/qinputcontextfactory.cpp
@@ -205,7 +205,7 @@ QStringList QInputContextFactory::keys()
 
     This function contains pure Symbian exception handling code for
     getting S60 language list.
-    Returned object ownership is transfered to caller.
+    Returned object ownership is transferred to caller.
 */
 static CAknInputLanguageList* s60LangListL()
 {
@@ -224,7 +224,7 @@ static CAknInputLanguageList* s60LangListL()
     \internal
 
     This function utility function return S60 language list.
-    Returned object ownership is transfered to caller.
+    Returned object ownership is transferred to caller.
 */
 static CAknInputLanguageList* s60LangList()
 {
diff --git a/src/gui/itemviews/qitemselectionmodel.cpp b/src/gui/itemviews/qitemselectionmodel.cpp
index e69cd65..e2a16b1 100644
--- a/src/gui/itemviews/qitemselectionmodel.cpp
+++ b/src/gui/itemviews/qitemselectionmodel.cpp
@@ -772,7 +772,7 @@ void QItemSelectionModelPrivate::_q_layoutAboutToBeChanged()
     savedPersistentIndexes.clear();
     savedPersistentCurrentIndexes.clear();
 
-    // optimisation for when all indexes are selected
+    // optimization for when all indexes are selected
     // (only if there is lots of items (1000) because this is not entirely correct)
     if (ranges.isEmpty() && currentSelection.count() == 1) {
         QItemSelectionRange range = currentSelection.first();
diff --git a/src/gui/kernel/qapplication_x11.cpp b/src/gui/kernel/qapplication_x11.cpp
index d8fb74c..a4cc5a3 100644
--- a/src/gui/kernel/qapplication_x11.cpp
+++ b/src/gui/kernel/qapplication_x11.cpp
@@ -3742,7 +3742,7 @@ int QApplication::x11ProcessEvent(XEvent* event)
                 // toplevel reparented...
                 QWidget *newparent = QWidget::find(event->xreparent.parent);
                 if (! newparent || (newparent->windowType() == Qt::Desktop)) {
-                    // we dont' know about the new parent (or we've been
+                    // we don't know about the new parent (or we've been
                     // reparented to root), perhaps a window manager
                     // has been (re)started?  reset the focus model to unknown
                     X11->focus_model = QX11Data::FM_Unknown;
diff --git a/src/gui/kernel/qclipboard_win.cpp b/src/gui/kernel/qclipboard_win.cpp
index 63ca9e5..c2e29fd 100644
--- a/src/gui/kernel/qclipboard_win.cpp
+++ b/src/gui/kernel/qclipboard_win.cpp
@@ -141,7 +141,7 @@ public:
         clipBoardViewer = new QWidget();
         clipBoardViewer->createWinId();
         clipBoardViewer->setObjectName(QLatin1String("internal clipboard owner"));
-        // We dont need this internal widget to appear in QApplication::topLevelWidgets()
+        // We don't need this internal widget to appear in QApplication::topLevelWidgets()
         if (QWidgetPrivate::allWidgets)
             QWidgetPrivate::allWidgets->remove(clipBoardViewer);
     }
diff --git a/src/gui/kernel/qclipboard_x11.cpp b/src/gui/kernel/qclipboard_x11.cpp
index 55548ef..62c861d 100644
--- a/src/gui/kernel/qclipboard_x11.cpp
+++ b/src/gui/kernel/qclipboard_x11.cpp
@@ -132,7 +132,7 @@ void setupOwner()
     requestor = new QWidget(0);
     requestor->createWinId();
     requestor->setObjectName(QLatin1String("internal clipboard requestor"));
-    // We dont need this internal widgets to appear in QApplication::topLevelWidgets()
+    // We don't need this internal widgets to appear in QApplication::topLevelWidgets()
     if (QWidgetPrivate::allWidgets) {
         QWidgetPrivate::allWidgets->remove(owner);
         QWidgetPrivate::allWidgets->remove(requestor);
@@ -769,7 +769,7 @@ QByteArray QX11Data::clipboardReadIncrementalProperty(Window win, Atom property,
     delete requestor;
     requestor = new QWidget(0);
     requestor->setObjectName(QLatin1String("internal clipboard requestor"));
-    // We dont need this internal widget to appear in QApplication::topLevelWidgets()
+    // We don't need this internal widget to appear in QApplication::topLevelWidgets()
     if (QWidgetPrivate::allWidgets)
         QWidgetPrivate::allWidgets->remove(requestor);
 
diff --git a/src/gui/kernel/qkeymapper_mac.cpp b/src/gui/kernel/qkeymapper_mac.cpp
index 3dc6afc..300e5ca 100644
--- a/src/gui/kernel/qkeymapper_mac.cpp
+++ b/src/gui/kernel/qkeymapper_mac.cpp
@@ -749,7 +749,7 @@ bool QKeyMapperPrivate::translateKeyEvent(QWidget *widget, EventHandlerCallRef e
         }
         return false;
     }
-    // Once we process the key down , we dont need to send the saved event again from
+    // Once we process the key down , we don't need to send the saved event again from
     // kEventTextInputUnicodeForKeyEvent, so clear it.
     if (currentContext && ekind == kEventRawKeyDown) {
         QMacInputContext *context = qobject_cast<QMacInputContext*>(currentContext);
diff --git a/src/gui/kernel/qsoftkeymanager_s60.cpp b/src/gui/kernel/qsoftkeymanager_s60.cpp
index fee1580..c81d75f 100644
--- a/src/gui/kernel/qsoftkeymanager_s60.cpp
+++ b/src/gui/kernel/qsoftkeymanager_s60.cpp
@@ -265,7 +265,7 @@ bool QSoftKeyManagerPrivateS60::setSoftkeyImage(CEikButtonGroupContainer *cba,
             CFbsBitmap* nMask = softkeyAlpha.toSymbianCFbsBitmap();
 
             CEikImage* myimage = new (ELeave) CEikImage;
-            myimage->SetPicture( nBitmap, nMask ); // nBitmap and nMask ownership transfered
+            myimage->SetPicture( nBitmap, nMask ); // nBitmap and nMask ownership transferred
 
             EikSoftkeyImage::SetImage(cba, *myimage, left); // Takes myimage ownership
             cbaHasImage[position] = true;
diff --git a/src/gui/kernel/qwidget_s60.cpp b/src/gui/kernel/qwidget_s60.cpp
index 5df5e19..031892d 100644
--- a/src/gui/kernel/qwidget_s60.cpp
+++ b/src/gui/kernel/qwidget_s60.cpp
@@ -577,7 +577,7 @@ void QWidgetPrivate::hide_sys()
     QSymbianControl *id = static_cast<QSymbianControl *>(q->internalWinId());
 
     if (id) {
-        //Incorrect optimisation - for popup windows, Qt's focus is moved before
+        //Incorrect optimization - for popup windows, Qt's focus is moved before
         //hide_sys is called, resulting in the popup window keeping its elevated
         //position in the CONE control stack.
         //This can result in keyboard focus being in an invisible widget in some
diff --git a/src/gui/painting/qgraphicssystem_qws.cpp b/src/gui/painting/qgraphicssystem_qws.cpp
index f5dab4b..03a0d11 100644
--- a/src/gui/painting/qgraphicssystem_qws.cpp
+++ b/src/gui/painting/qgraphicssystem_qws.cpp
@@ -49,7 +49,7 @@ QT_BEGIN_NAMESPACE
 QPixmapData *QWSGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const
 {
     if (screen->pixmapDataFactory())
-        return screen->pixmapDataFactory()->create(type); //### For 4.4 compatability
+        return screen->pixmapDataFactory()->create(type); //### For 4.4 compatibility
     else
         return new QRasterPixmapData(type);
 }
diff --git a/src/gui/painting/qimagescale.cpp b/src/gui/painting/qimagescale.cpp
index 8580775..7383308 100644
--- a/src/gui/painting/qimagescale.cpp
+++ b/src/gui/painting/qimagescale.cpp
@@ -304,7 +304,7 @@ QImageScaleInfo* QImageScale::qimageCalcScaleInfo(const QImage &img,
     return(isi);
 }
 
-/* FIXME: NEED to optimise ScaleAARGBA - currently its "ok" but needs work*/
+/* FIXME: NEED to optimize ScaleAARGBA - currently its "ok" but needs work*/
 
 /* scale by area sampling */
 static void qt_qimageScaleAARGBA(QImageScaleInfo *isi, unsigned int *dest,
diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp
index c92d291..8f9d8ba 100644
--- a/src/gui/painting/qpaintengine_raster.cpp
+++ b/src/gui/painting/qpaintengine_raster.cpp
@@ -1102,7 +1102,7 @@ void QRasterPaintEnginePrivate::updateMatrixData(QSpanData *spanData, const QBru
     Q_Q(QRasterPaintEngine);
     bool bilinear = q->state()->flags.bilinear;
 
-    if (b.d->transform.type() > QTransform::TxNone) { // FALCON: optimise
+    if (b.d->transform.type() > QTransform::TxNone) { // FALCON: optimize
         spanData->setupMatrix(b.transform() * m, bilinear);
     } else {
         if (m.type() <= QTransform::TxTranslate) {
diff --git a/src/gui/painting/qregion.h b/src/gui/painting/qregion.h
index bc4da28..acb20c1 100644
--- a/src/gui/painting/qregion.h
+++ b/src/gui/painting/qregion.h
@@ -201,7 +201,7 @@ private:
         Region rgn;
         void *xrectangles;
 #elif defined(Q_WS_MAC) && !defined(QT_MAC_USE_COCOA)
-        mutable RgnHandle unused; // Here for binary compatability reasons. ### Qt 5 remove.
+        mutable RgnHandle unused; // Here for binary compatibility reasons. ### Qt 5 remove.
 #endif
 #if defined(Q_WS_QWS) || defined(Q_WS_X11) || defined(Q_WS_MAC) || defined(Q_WS_WIN) || defined(Q_OS_SYMBIAN)
         QRegionPrivate *qt_rgn;
diff --git a/src/gui/styles/qwindowsxpstyle.cpp b/src/gui/styles/qwindowsxpstyle.cpp
index a5e9c19..da29440 100644
--- a/src/gui/styles/qwindowsxpstyle.cpp
+++ b/src/gui/styles/qwindowsxpstyle.cpp
@@ -302,7 +302,7 @@ HWND QWindowsXPStylePrivate::winId(const QWidget *widget)
         limboWidget = new QWidget(0);
         limboWidget->createWinId();
         limboWidget->setObjectName(QLatin1String("xp_limbo_widget"));
-        // We dont need this internal widget to appear in QApplication::topLevelWidgets()
+        // We don't need this internal widget to appear in QApplication::topLevelWidgets()
         if (QWidgetPrivate::allWidgets)
             QWidgetPrivate::allWidgets->remove(limboWidget);
     }
diff --git a/src/gui/text/qfontdatabase_x11.cpp b/src/gui/text/qfontdatabase_x11.cpp
index 9bf6cc8..ecc4690 100644
--- a/src/gui/text/qfontdatabase_x11.cpp
+++ b/src/gui/text/qfontdatabase_x11.cpp
@@ -2006,7 +2006,7 @@ static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt)
 
     FcFontSet *set = FcConfigGetFonts(config, FcSetApplication);
     if (!set) {
-        FcConfigAppFontAddFile(config, (const FcChar8 *)":/non-existant");
+        FcConfigAppFontAddFile(config, (const FcChar8 *)":/non-existent");
         set = FcConfigGetFonts(config, FcSetApplication); // try again
         if (!set)
             return;
diff --git a/src/gui/text/qfontengine_p.h b/src/gui/text/qfontengine_p.h
index 571cf98..fc26eef 100644
--- a/src/gui/text/qfontengine_p.h
+++ b/src/gui/text/qfontengine_p.h
@@ -158,7 +158,7 @@ public:
 
     virtual QFixed emSquareSize() const { return ascent(); }
 
-    /* returns 0 as glyph index for non existant glyphs */
+    /* returns 0 as glyph index for non existent glyphs */
     virtual bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const = 0;
 
     /**
diff --git a/src/gui/text/qfontengine_win.cpp b/src/gui/text/qfontengine_win.cpp
index 7609ee5..5f25752 100644
--- a/src/gui/text/qfontengine_win.cpp
+++ b/src/gui/text/qfontengine_win.cpp
@@ -1209,7 +1209,7 @@ QImage QFontEngineWin::alphaMapForGlyph(glyph_t glyph, const QTransform &xform)
 
     QImage indexed(mask->width(), mask->height(), QImage::Format_Indexed8);
 
-    // ### This part is kinda pointless, but we'll crash later if we dont because some
+    // ### This part is kinda pointless, but we'll crash later if we don't because some
     // code paths expects there to be colortables for index8-bit...
     QVector<QRgb> colors(256);
     for (int i=0; i<256; ++i)
diff --git a/src/gui/text/qfontsubset.cpp b/src/gui/text/qfontsubset.cpp
index e49f5b4..2283358 100644
--- a/src/gui/text/qfontsubset.cpp
+++ b/src/gui/text/qfontsubset.cpp
@@ -697,7 +697,7 @@ static QTtfTable generateHead(const qttf_head_table &head)
 // Bits 5-10: These should be set according to  Apple's specification . However, they are not implemented in OpenType.
 // Bit 11: Font data is 'lossless,' as a result of having been compressed and decompressed with the Agfa MicroType Express engine.
 // Bit 12: Font converted (produce compatible metrics)
-// Bit 13: Font optimised for ClearType
+// Bit 13: Font optimized for ClearType
 // Bit 14: Reserved, set to 0
 // Bit 15: Reserved, set to 0
       << quint16(0)
@@ -1008,7 +1008,7 @@ static void convertPath(const QPainterPath &path, QList<TTF_POINT> *points, QLis
                     np.x = (i1_x + i2_x) >> 1;
                     np.y = (i1_y + i2_y) >> 1;
                     if (try_reduce) {
-                        // see if we can optimise out the last onCurve point
+                        // see if we can optimize out the last onCurve point
                         int mx = (points->at(points->size() - 2).x + base[2].x) >> 1;
                         int my = (points->at(points->size() - 2).y + base[2].y) >> 1;
                         if (qAbs(mx - base[3].x) <= split_limit && qAbs(my = base[3].y) <= split_limit)
diff --git a/src/gui/text/qtextdocument_p.cpp b/src/gui/text/qtextdocument_p.cpp
index 213db7e..0bdd20d 100644
--- a/src/gui/text/qtextdocument_p.cpp
+++ b/src/gui/text/qtextdocument_p.cpp
@@ -320,7 +320,7 @@ void QTextDocumentPrivate::setLayout(QAbstractTextDocumentLayout *layout)
 
 void QTextDocumentPrivate::insert_string(int pos, uint strPos, uint length, int format, QTextUndoCommand::Operation op)
 {
-    // ##### optimise when only appending to the fragment!
+    // ##### optimize when only appending to the fragment!
     Q_ASSERT(noBlockInString(text.mid(strPos, length)));
 
     split(pos);
@@ -1446,7 +1446,7 @@ void QTextDocumentPrivate::clearFrame(QTextFrame *f)
 
 void QTextDocumentPrivate::scan_frames(int pos, int charsRemoved, int charsAdded)
 {
-    // ###### optimise
+    // ###### optimize
     Q_UNUSED(pos);
     Q_UNUSED(charsRemoved);
     Q_UNUSED(charsAdded);
diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp
index f432b7e..f1278b9 100644
--- a/src/gui/text/qtextlayout.cpp
+++ b/src/gui/text/qtextlayout.cpp
@@ -1615,7 +1615,7 @@ void QTextLine::setLineWidth(qreal width)
     if (line.length
         && line.textWidth <= line.width
         && line.from + line.length == eng->layoutData->string.length())
-        // no need to do anything if the line is already layouted and the last one. This optimisation helps
+        // no need to do anything if the line is already layouted and the last one. This optimization helps
         // when using things in a single line layout.
         return;
     line.length = 0;
diff --git a/src/gui/widgets/qabstractslider.cpp b/src/gui/widgets/qabstractslider.cpp
index f38bae7..a8b39f4 100644
--- a/src/gui/widgets/qabstractslider.cpp
+++ b/src/gui/widgets/qabstractslider.cpp
@@ -722,7 +722,7 @@ bool QAbstractSliderPrivate::scrollByDelta(Qt::Orientation orientation, Qt::Keyb
 #else
         // Native UI-elements on Mac can scroll hundreds of lines at a time as
         // a result of acceleration. So keep the same behaviour in Qt, and
-        // dont restrict stepsToScroll to certain maximum (pageStep): 
+        // don't restrict stepsToScroll to certain maximum (pageStep): 
         stepsToScroll = int(offset_accumulated);
 #endif
         offset_accumulated -= int(offset_accumulated);
diff --git a/src/multimedia/audio/qaudioengine.cpp b/src/multimedia/audio/qaudioengine.cpp
index 7f1f5d3..c379aff 100644
--- a/src/multimedia/audio/qaudioengine.cpp
+++ b/src/multimedia/audio/qaudioengine.cpp
@@ -133,7 +133,7 @@ QT_BEGIN_NAMESPACE
     Uses the \a device as the QIODevice to transfer data. If \a device is null then the class
     creates an internal QIODevice. Returns a pointer to the QIODevice being used to handle
     the data transfer. This QIODevice can be used to write() audio data directly. Passing a
-    QIODevice allows the data to be transfered without any extra code.
+    QIODevice allows the data to be transferred without any extra code.
 */
 
 /*!
@@ -247,7 +247,7 @@ QT_BEGIN_NAMESPACE
     Uses the \a device as the QIODevice to transfer data. If \a device is null
     then the class creates an internal QIODevice. Returns a pointer to the
     QIODevice being used to handle the data transfer. This QIODevice can be used to
-    read() audio data directly. Passing a QIODevice allows the data to be transfered
+    read() audio data directly. Passing a QIODevice allows the data to be transferred
     without any extra code.
 */
 
diff --git a/src/multimedia/audio/qaudioinput.cpp b/src/multimedia/audio/qaudioinput.cpp
index 3676f64..6660c3f 100644
--- a/src/multimedia/audio/qaudioinput.cpp
+++ b/src/multimedia/audio/qaudioinput.cpp
@@ -201,7 +201,7 @@ QAudioInput::~QAudioInput()
 
 /*!
      Uses the \a device as the QIODevice to transfer data.
-     Passing a QIODevice allows the data to be transfered without any extra code.
+     Passing a QIODevice allows the data to be transferred without any extra code.
      All that is required is to open the QIODevice.
 
      If able to successfully get audio data from the systems audio device the
diff --git a/src/multimedia/audio/qaudiooutput.cpp b/src/multimedia/audio/qaudiooutput.cpp
index cf3b79c..b71d48c 100644
--- a/src/multimedia/audio/qaudiooutput.cpp
+++ b/src/multimedia/audio/qaudiooutput.cpp
@@ -199,7 +199,7 @@ QAudioFormat QAudioOutput::format() const
 
 /*!
     Uses the \a device as the QIODevice to transfer data.
-    Passing a QIODevice allows the data to be transfered without any extra code.
+    Passing a QIODevice allows the data to be transferred without any extra code.
     All that is required is to open the QIODevice.
 
     If able to successfully output audio data to the systems audio device the
diff --git a/src/network/ssl/qsslsocket_openssl.cpp b/src/network/ssl/qsslsocket_openssl.cpp
index cd224df..2910538 100644
--- a/src/network/ssl/qsslsocket_openssl.cpp
+++ b/src/network/ssl/qsslsocket_openssl.cpp
@@ -647,7 +647,7 @@ TInt CSymbianCertificateRetriever::ThreadEntryPoint(TAny* aParams)
     if (err)
         return err;
     else
-        return self->iSequenceError;    // return any error that occured during the retrieval
+        return self->iSequenceError;    // return any error that occurred during the retrieval
 }
 
 void CSymbianCertificateRetriever::ConstructL()
diff --git a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
index 06b96ae..92cf108 100644
--- a/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
+++ b/src/opengl/gl2paintengineex/qglengineshadermanager_p.h
@@ -457,7 +457,7 @@ public:
         AttributeOpacity
     };
 
-    // There are optimisations we can do, depending on the brush transform:
+    // There are optimizations we can do, depending on the brush transform:
     //    1) May not have to apply perspective-correction
     //    2) Can use lower precision for matrix
     void optimiseForBrushTransform(QTransform::TransformationType transformType);
diff --git a/src/opengl/qwindowsurface_gl.cpp b/src/opengl/qwindowsurface_gl.cpp
index 8157b2a..68d444e 100644
--- a/src/opengl/qwindowsurface_gl.cpp
+++ b/src/opengl/qwindowsurface_gl.cpp
@@ -194,7 +194,7 @@ public:
             widget = new QGLWidget(QGLFormat(QGL::SingleBuffer | QGL::NoDepthBuffer | QGL::NoStencilBuffer));
             widget->resize(1, 1);
 
-            // We dont need this internal widget to appear in QApplication::topLevelWidgets()
+            // We don't need this internal widget to appear in QApplication::topLevelWidgets()
             if (QWidgetPrivate::allWidgets)
                 QWidgetPrivate::allWidgets->remove(widget);
             initializing = false;
diff --git a/src/plugins/bearer/symbian/qnetworksession_impl.cpp b/src/plugins/bearer/symbian/qnetworksession_impl.cpp
index 7f81397..85723ce 100644
--- a/src/plugins/bearer/symbian/qnetworksession_impl.cpp
+++ b/src/plugins/bearer/symbian/qnetworksession_impl.cpp
@@ -760,7 +760,7 @@ void QNetworkSessionPrivateImpl::Error(TInt /*aError*/)
 {
 #ifdef QT_BEARERMGMT_SYMBIAN_DEBUG
     qDebug() << "QNS this : " << QString::number((uint)this) << " - "
-            << "roaming Error() occured, isOpen is: " << isOpen;
+            << "roaming Error() occurred, isOpen is: " << isOpen;
 #endif
     if (isOpen) {
         isOpen = false;
diff --git a/src/plugins/bearer/symbian/symbianengine.cpp b/src/plugins/bearer/symbian/symbianengine.cpp
index ef273c1..b4dfc4d 100644
--- a/src/plugins/bearer/symbian/symbianengine.cpp
+++ b/src/plugins/bearer/symbian/symbianengine.cpp
@@ -976,7 +976,7 @@ void SymbianEngine::RunL()
     QMutexLocker locker(&mutex);
 
     if (iStatus != KErrCancel) {
-        // By default, start relistening notifications. Stop only if interesting event occured.
+        // By default, start relistening notifications. Stop only if interesting event occurred.
         iWaitingCommsDatabaseNotifications = true;
         RDbNotifier::TEvent event = STATIC_CAST(RDbNotifier::TEvent, iStatus.Int());
         switch (event) {
diff --git a/src/sql/kernel/qsqldriver.cpp b/src/sql/kernel/qsqldriver.cpp
index 64fd99c..3d753dc 100644
--- a/src/sql/kernel/qsqldriver.cpp
+++ b/src/sql/kernel/qsqldriver.cpp
@@ -396,7 +396,7 @@ QString QSqlDriver::escapeIdentifier(const QString &identifier, IdentifierType)
     \a identifier can either be a table name or field name, dependent
     on \a type.
 
-    \warning Because of binary compatability constraints, this function is not virtual.
+    \warning Because of binary compatibility constraints, this function is not virtual.
     If you want to provide your own implementation in your QSqlDriver subclass,
     reimplement the isIdentifierEscapedImplementation() slot in your subclass instead.
     The isIdentifierEscapedFunction() will dynamically detect the slot and call it.
@@ -421,7 +421,7 @@ bool QSqlDriver::isIdentifierEscaped(const QString &identifier, IdentifierType t
     and trailing delimiter characters, \a identifier is returned without
     modification.
 
-    \warning Because of binary compatability constraints, this function is not virtual,
+    \warning Because of binary compatibility constraints, this function is not virtual,
     If you want to provide your own implementation in your QSqlDriver subclass,
     reimplement the stripDelimitersImplementation() slot in your subclass instead.
     The stripDelimiters() function will dynamically detect the slot and call it.
@@ -871,7 +871,7 @@ QStringList QSqlDriver::subscribedToNotificationsImplementation() const
     \a identifier can either be a table name or field name, dependent
     on \a type.
 
-    Because of binary compatability constraints, isIdentifierEscaped() function
+    Because of binary compatibility constraints, isIdentifierEscaped() function
     (introduced in Qt 4.5) is not virtual.  Instead, isIdentifierEscaped() will
     dynamically detect and call \e this slot.  The default implementation
     assumes the escape/delimiter character is a double quote.  Reimplement this
@@ -896,7 +896,7 @@ bool QSqlDriver::isIdentifierEscapedImplementation(const QString &identifier, Id
     If \a identifier does not have leading and trailing delimiter characters, \a
     identifier is returned without modification.
 
-    Because of binary compatability constraints, the stripDelimiters() function
+    Because of binary compatibility constraints, the stripDelimiters() function
     (introduced in Qt 4.5) is not virtual.  Instead, stripDelimiters() will
     dynamically detect and call \e this slot.  It generally unnecessary
     to reimplement this slot.