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/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:FDL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in a
** written agreement between you and Nokia.
**
** GNU Free Documentation License
** Alternatively, this file may be used under the terms of the GNU Free
** Documentation License version 1.3 as published by the Free Software
** Foundation and appearing in the file included in the packaging of this
** file.
**
** 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
\ingroup platform-specific
\brief A summary of known issues in this Qt version at the time of release.
An up-to-date list of known issues can be found at
\l{http://bugreports.qt.nokia.com/}{Qt Bug Tracker}.
For a list list of known bugs, see the \l{Task Tracker} at 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.
\o Compile errors with Microsoft Visual C++ compiler. \br
There seems to be a bug in the Microsoft compiler when compiling with O2
optimization level in 64 bit.
This problem will result in crashes in QAbstractItemView::viewOptions().
See \l{http://bugreports.qt.nokia.com/browse/QTBUG-11445} for updates on this
bug.
\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
*/
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