Various documentation fixes ported from Qt 4.8

Final set of selected documentation fixes for qtbase
from Qt 4.8 commit bacae725e584f51ee2fd83af7bef3e4515de9587

Task-number: QTBUG-13362
Task-number: QTBUG-18356
Task-number: QTBUG-18417
Task-number: QTBUG-18664
Task-number: QTBUG-21562
Task-number: QTBUG-22094
Task-number: QTBUG-18741
Task-number: QTBUG-15921
Task-number: QTBUG-15738

Change-Id: I3bd33bb7ce7aa991913ba82f3ea0e4b124f3ee41
Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>

doc/src/examples/editabletreemodel.qdoc

@@ -48,14 +48,15 @@
     As described in the \l{Model Subclassing Reference}, models must
     provide implementations for the standard set of model functions:
     \l{QAbstractItemModel::}{flags()}, \l{QAbstractItemModel::}{data()},
-    \l{QAbstractItemModel::}{headerData()}, and
+    \l{QAbstractItemModel::}{headerData()},
+    \l{QAbstractItemModel::}{columnCount()}, and
     \l{QAbstractItemModel::}{rowCount()}. In addition, hierarchical models,
     such as this one, need to provide implementations of
     \l{QAbstractItemModel::}{index()} and \l{QAbstractItemModel::}{parent()}.
 
     An editable model needs to provide implementations of
     \l{QAbstractItemModel::}{setData()} and
-    \l{QAbstractItemModel::}{headerData()}, and must return a suitable
+    \l{QAbstractItemModel::}{setHeaderData()}, and must return a suitable
     combination of flags from its \l{QAbstractItemModel::}{flags()} function.
 
     Since this example allows the dimensions of the model to be changed,

doc/src/network/files-and-resources/resources.qdoc

@@ -101,8 +101,8 @@
     In this case, the file is accessible as \c
     :/myresources/cut-img.png.
 
-    Some resources, such as translation files and icons, many need to
-    change based on the user's locale. This is done by adding a \c lang
+    Some resources need to change based on the user's locale,
+    such as translation files or icons. This is done by adding a \c lang
     attribute to the \c qresource tag, specifying a suitable locale
     string. For example:
 

doc/src/snippets/code/src_corelib_thread_qmutex.cpp

@@ -114,8 +114,8 @@ int complexFunction(int flag)
     switch (flag) {
     case 0:
     case 1:
-        mutex.unlock();
-        return moreComplexFunction(flag);
+        retVal = moreComplexFunction(flag);
+        break;
     case 2:
         {
             int status = anotherFunction();

doc/src/sql/sql-programming/sql-driver.qdoc

@@ -494,7 +494,7 @@
     \snippet doc/src/snippets/code/doc_src_sql-driver.qdoc 15
 
     Users of MinGW may wish to consult the following online document:
-    \l{Compiling PostgreSQL On Native Win32 FAQ}.
+    \l{PostgreSQL MinGW/Native Windows}.
 
     \bold{Note:} This database plugin is not supported for Windows CE.
 

src/corelib/tools/qregexp.cpp

@@ -670,7 +670,7 @@ int qFindString(const QChar *haystack, int haystackLen, int from,
 
     Wildcard matching can be convenient because of its simplicity, but
     any wildcard regexp can be defined using full regexps, e.g.
-    \bold{.*\.html$}. Notice that we can't match both \c .html and \c
+    \bold{.*\\.html$}. Notice that we can't match both \c .html and \c
     .htm files with a wildcard unless we use \bold{*.htm*} which will
     also match 'test.html.bak'. A full regexp gives us the precision
     we need, \bold{.*\\.html?$}.

src/network/kernel/qnetworkproxy.cpp

@@ -1440,7 +1440,7 @@ void QNetworkProxyFactory::setApplicationProxyFactory(QNetworkProxyFactory *fact
 /*!
     \fn QList<QNetworkProxy> QNetworkProxyFactory::queryProxy(const QNetworkProxyQuery &query)
 
-    This function examines takes the query request, \a query,
+    This function takes the query request, \a query,
     examines the details of the type of socket or request and returns
     a list of QNetworkProxy objects that indicate the proxy servers to
     be used, in order of preference.
@@ -1461,7 +1461,7 @@ void QNetworkProxyFactory::setApplicationProxyFactory(QNetworkProxyFactory *fact
 /*!
     \fn QList<QNetworkProxy> QNetworkProxyFactory::systemProxyForQuery(const QNetworkProxyQuery &query)
 
-    This function examines takes the query request, \a query,
+    This function takes the query request, \a query,
     examines the details of the type of socket or request and returns
     a list of QNetworkProxy objects that indicate the proxy servers to
     be used, in order of preference.
@@ -1507,7 +1507,7 @@ void QNetworkProxyFactory::setApplicationProxyFactory(QNetworkProxyFactory *fact
 */
 
 /*!
-    This function examines takes the query request, \a query,
+    This function takes the query request, \a query,
     examines the details of the type of socket or request and returns
     a list of QNetworkProxy objects that indicate the proxy servers to
     be used, in order of preference.

src/widgets/dialogs/qdialog.cpp

@@ -430,7 +430,11 @@ bool QDialog::event(QEvent *e)
 #endif
 
 /*!
-  Returns the modal dialog's result code, \c Accepted or \c Rejected.
+  In general returns the modal dialog's result code, \c Accepted or
+  \c Rejected.
+
+  \note When called on a QMessageBox instance, the returned value is a
+  value of the \l QMessageBox::StandardButton enum.
 
   Do not call this function if the dialog was constructed with the
   Qt::WA_DeleteOnClose attribute.

src/widgets/dialogs/qmessagebox.cpp

@@ -2597,6 +2597,9 @@ QPixmap QMessageBox::standardIcon(Icon icon)
   When using QMessageBox with custom buttons, this function returns an
   opaque value; use clickedButton() to determine which button was clicked.
 
+  \note The result() function returns also \l StandardButton value instead
+  of \l QDialog::DialogCode.
+
   Users cannot interact with any other window in the same
   application until they close the dialog, either by clicking a
   button or by using a mechanism provided by the window system.

src/widgets/kernel/qwidget.cpp

@@ -3018,8 +3018,8 @@ QList<QAction*> QWidget::actions() const
     \property QWidget::enabled
     \brief whether the widget is enabled
 
-    An enabled widget handles keyboard and mouse events; a disabled
-    widget does not.
+    In general an enabled widget handles keyboard and mouse events; a disabled
+    widget does not. An exception is made with \l{QAbstractButton}.
 
     Some widgets display themselves differently when they are
     disabled. For example a button might draw its label grayed out. If

src/widgets/widgets/qabstractbutton.cpp

@@ -115,7 +115,9 @@ Q_WIDGETS_EXPORT extern bool qt_tab_all_widgets;
     checkable buttons can be checked and unchecked (see below).
 
     \o isEnabled() indicates whether the button can be pressed by the
-    user.
+    user. \note As opposed to other widgets, buttons derived from
+    QAbstractButton accepts mouse and context menu events
+    when disabled.
 
     \o setAutoRepeat() sets whether the button will auto-repeat if the
     user holds it down. \l autoRepeatDelay and \l autoRepeatInterval

src/xml/dom/qdom.cpp

@@ -6561,6 +6561,10 @@ void QDomDocumentPrivate::saveDocument(QTextStream& s, const int indent, QDomNod
     element is available using documentElement(). The textual
     representation of the document can be obtained using toString().
 
+    \note The DOM tree might end up reserving a lot of memory if the XML
+    document is big. For such documents, the QXmlStreamReader or the
+    QXmlQuery classes might be better solutions.
+
     It is possible to insert a node from another document into the
     document using importNode().