/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the documentation of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

/*!

    \page known-issues.html

    \title Known Issues in %VERSION%

    \ingroup platform-specific

    \brief A summary of known issues in Qt %VERSION% at the time of release.

    An up-to-date list of known issues with Qt %VERSION% can be found via the

    \l{http://bugreports.qt.nokia.com/}{Qt Bug Tracker}.

    For a list list of known bugs in Qt %VERSION%, see the \l{Task Tracker}

    on the Qt website.

    An overview of known issues may also be found at:

    \l{http://qt.gitorious.org/qt/pages/QtKnownIssues}

    {Known Issues Wiki}.

    \section1 Installation Issues

    \section2 Installing the Source Package on Unix systems

    \list

    \o  If you download a Zip source package, you will need to convert

        Windows-style line endings (CR/LF) to Unix-style line-endings (LF) when

        you uncompress the package.  To do this, give the "-a" option when you

        run the "unzip' command.

    \o  If you fail to supply the "-a" option when unzipping the package, you

        will see the following error message when you attempt to execute the

        configure command:

        "bash: ./configure: /bin/sh^M: bad interpreter: No such file or directory"

    \endlist

    \section2 Installing on Mac OS X 10.6 "Snow Leopard"

    \list

    \o Performing a new install of the Qt 4.6 beta on Snow Leopard

       triggers a bug in the installer that causes the install to fail.

       Updating an existing Qt installation works fine.

    \o There are two workarounds, either disable spotlight for the target

       drive during the install, or do a custom install where you deselect

       documentation and examples. Run the installer again as a full

       install to get the documentation and examples installed.

    \endlist

    \section1 Issues with Third Party Software

    \section2 X11

    \list

    \o  There is a bug in the 169.xx NVIDIA drivers on certain GeForce 8 series

        cards that is triggered by the OpenGL paint engine when using QPainter

        on a QGLWidget to draw paths and polygons. Some other painting

        operations that end up in the path fallback are affected as well. The

        bug causes the whole X server to repeatedly hang for several seconds at

        a time.

    \o  There is an issue with NVIDIA's 9xxx driver series on X11 that causes a

        crash in cases where there are several \l{QGLContext}s and the extended

        composition modes are used (the composition modes between and including

        QPainter::CompositionMode_Multiply and

        QPainter::CompositionMode_Exclusion). This affects the composition mode

        demo in Qt 4.5, for example. The crash does not occur in newer versions

        of the drivers.

    \endlist

    \section2 Windows

    \list

    \o  When using version 6.14.11.6921 of the NVIDIA drivers for the GeForce

        6600 GT under Windows XP, Qt applications which use drag and drop will

        display reduced size drag and drop icons when run alongside

        applications that use OpenGL. This problem can be worked around by

        reducing the level of graphics acceleration provided by the driver, or

        by disabling hardware acceleration completely.

    \o  With NVIDIA GeForce 7950 GT (driver version 6.14.11.7824), a fullscreen

        QGLWidget flickers when child widgets are shown/hidden. The workaround

        for this is to use \l{QWidget::}{setGeometry()} with a width/height 1

        pixel bigger than your geometry and call \l{QWidget::}{show()}.

    \o  A bug in the Firebird database can cause an application to crash when

        \c{fbembed.dll} is unloaded. The bug is fixed in version 2.5.

    \o  On Windows 7, resizing windows is slower than on Vista/Xp. This is because

        the gesture initialization process (required for native gesture support)

        currently calls winId() on widgets, which causes whole widget hierarchies

        to use native window handles. This slows down resizing.

    \o  Compile errors with Intel C++ Compiler.\br

        There seems to be a bug in the Intel compiler with respect to

        over-agressive inlining of code.

        The problem will manifest itself during the link phase of QtGui where

        it fails with the error that it cannot find QObjectData::~QObjectData().

        See \l{http://bugreports.qt.nokia.com/browse/QTBUG-5145} for updates on this

        bug.

        Also, due to some bugs in WebKit, the QtScript and QtWebKit modules

        will not compile.

        See \l{http://bugreports.qt.nokia.com/browse/QTBUG-6297} for a

        workaround for QtScript.

    \endlist

    \section2 Mac OS X

    \list

    \o  If a sheet is opened for a given window, clicking the title bar of that

        window will cause it to flash. This behavior has been reported to Apple

        (bug number 5827676).

    \endlist

    \section2 Symbian

    \list

    \o  Check known issues for Symbian at

    \l{http://qt.gitorious.org/qt/pages/QtKnownIssues} {Known Issues Wiki}.

    \endlist

*/