Long live Qt 4.5!

16 files changed, 4087 insertions, 0 deletions

diff --git a/src/gui/inputmethod/inputmethod.pri b/src/gui/inputmethod/inputmethod.pri
new file mode 100644
index 0000000..d321cd4
--- /dev/null
+++ b/src/gui/inputmethod/inputmethod.pri
@@ -0,0 +1,26 @@
+# Qt inputmethod module
+
+HEADERS +=inputmethod/qinputcontextfactory.h \
+          inputmethod/qinputcontextplugin.h \
+          inputmethod/qinputcontext_p.h \
+          inputmethod/qinputcontext.h
+SOURCES +=inputmethod/qinputcontextfactory.cpp \
+          inputmethod/qinputcontextplugin.cpp \
+          inputmethod/qinputcontext.cpp
+x11 {
+    HEADERS += inputmethod/qximinputcontext_p.h
+    SOURCES += inputmethod/qximinputcontext_x11.cpp
+}
+win32 {
+    HEADERS += inputmethod/qwininputcontext_p.h
+    SOURCES += inputmethod/qwininputcontext_win.cpp
+}
+embedded {
+    HEADERS += inputmethod/qwsinputcontext_p.h
+    SOURCES += inputmethod/qwsinputcontext_qws.cpp
+}
+mac:!embedded {
+    HEADERS += inputmethod/qmacinputcontext_p.h
+    SOURCES += inputmethod/qmacinputcontext_mac.cpp
+}
+
diff --git a/src/gui/inputmethod/qinputcontext.cpp b/src/gui/inputmethod/qinputcontext.cpp
new file mode 100644
index 0000000..f78b86a
--- /dev/null
+++ b/src/gui/inputmethod/qinputcontext.cpp
@@ -0,0 +1,464 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Implementation of QInputContext class
+**
+** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+**
+** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+** license. You may use this file under your Qt license. Following
+** description is copied from their original file headers. Contact
+** immodule-qt@freedesktop.org if any conditions of this licensing are
+** not clear to you.
+**
+****************************************************************************/
+
+//#define QT_NO_IM_PREEDIT_RELOCATION
+
+#include "qinputcontext.h"
+#include "qinputcontext_p.h"
+
+#ifndef QT_NO_IM
+
+#include "qplatformdefs.h"
+
+#include "qapplication.h"
+#include "qmenu.h"
+#include "qtextformat.h"
+#include "qpalette.h"
+
+#include <stdlib.h>
+#include <limits.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QInputContext
+    \brief The QInputContext class abstracts the input method dependent data and composing state.
+
+    \ingroup i18n
+
+    An input method is responsible to input complex text that cannot
+    be inputted via simple keymap. It converts a sequence of input
+    events (typically key events) into a text string through the input
+    method specific converting process. The class of the processes are
+    widely ranging from simple finite state machine to complex text
+    translator that pools a whole paragraph of a text with text
+    editing capability to perform grammar and semantic analysis.
+
+    To abstract such different input method specific intermediate
+    information, Qt offers the QInputContext as base class. The
+    concept is well known as 'input context' in the input method
+    domain. an input context is created for a text widget in response
+    to a demand. It is ensured that an input context is prepared for
+    an input method before input to a text widget.
+
+    Multiple input contexts that is belonging to a single input method
+    may concurrently coexist. Suppose multi-window text editor. Each
+    text widget of window A and B holds different QInputContext
+    instance which contains different state information such as
+    partially composed text.
+
+    \section1 Groups of Functions
+
+    \table
+    \header \o Context \o Functions
+
+    \row \o Receiving information \o
+	x11FilterEvent(),
+	filterEvent(),
+	mouseHandler()
+
+    \row \o Sending back composed text \o
+	sendEvent()
+
+    \row \o State change notification \o
+	setFocusWidget(),
+	reset()
+
+    \row \o Context information \o
+	identifierName(),
+	language(),
+	font(),
+	isComposing()
+
+    \endtable
+
+    \legalese
+    Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+
+    This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+    license. You may use this file under your Qt license. Following
+    description is copied from their original file headers. Contact
+    immodule-qt@freedesktop.org if any conditions of this licensing are
+    not clear to you.
+    \endlegalese
+
+    \sa QInputContextPlugin, QInputContextFactory, QApplication::setInputContext()
+*/
+
+/*!
+    Constructs an input context with the given \a parent.
+*/
+QInputContext::QInputContext(QObject* parent)
+    : QObject(*new QInputContextPrivate, parent)
+{
+}
+
+
+/*!
+    Destroys the input context.
+*/
+QInputContext::~QInputContext()
+{
+}
+
+/*!
+    \internal
+    Returns the widget that has an input focus for this input
+    context. Ordinary input methods should not call this function
+    directly to keep platform independence and flexible configuration
+    possibility.
+
+    The return value may differ from holderWidget() if the input
+    context is shared between several text widgets.
+
+    \sa setFocusWidget(), holderWidget()
+*/
+QWidget *QInputContext::focusWidget() const
+{
+    Q_D(const QInputContext);
+    return d->focusWidget;
+}
+
+
+/*!
+    \internal
+    Sets the widget that has an input focus for this input
+    context. Ordinary input methods must not call this function
+    directly.
+
+    \sa focusWidget()
+*/
+void QInputContext::setFocusWidget(QWidget *widget)
+{
+    Q_ASSERT(!widget || widget->testAttribute(Qt::WA_InputMethodEnabled));
+    Q_D(QInputContext);
+    d->focusWidget = widget;
+}
+
+/*!
+    \fn bool QInputContext::isComposing() const
+
+    This function indicates whether InputMethodStart event had been
+    sent to the current focus widget. It is ensured that an input
+    context can send InputMethodCompose or InputMethodEnd event safely
+    if this function returned true.
+
+    The state is automatically being tracked through sendEvent().
+
+    \sa sendEvent()
+*/
+
+/*!
+    This function can be reimplemented in a subclass to filter input
+    events.
+
+    Return true if the \a event has been consumed. Otherwise, the
+    unfiltered \a event will be forwarded to widgets as ordinary
+    way. Although the input events have accept() and ignore()
+    methods, leave it untouched.
+
+    \a event is currently restricted to QKeyEvent. But some input
+    method related events such as QWheelEvent or QTabletEvent may be
+    added in future.
+
+    The filtering opportunity is always given to the input context as
+    soon as possible. It has to be taken place before any other key
+    event consumers such as eventfilters and accelerators because some
+    input methods require quite various key combination and
+    sequences. It often conflicts with accelerators and so on, so we
+    must give the input context the filtering opportunity first to
+    ensure all input methods work properly regardless of application
+    design.
+
+    Ordinary input methods require discrete key events to work
+    properly, so Qt's key compression is always disabled for any input
+    contexts.
+
+    \sa QKeyEvent, x11FilterEvent()
+*/
+bool QInputContext::filterEvent(const QEvent * /*event*/)
+{
+    return false;
+}
+
+/*!
+  Sends an input method event specified by \a event to the current focus
+  widget. Implementations of QInputContext should call this method to
+  send the generated input method events and not
+  QApplication::sendEvent(), as the events might have to get dispatched
+  to a different application on some platforms.
+
+  Some complex input methods route the handling to several child
+  contexts (e.g. to enable language switching). To account for this,
+  QInputContext will check if the parent object is a QInputContext. If
+  yes, it will call the parents sendEvent() implementation instead of
+  sending the event directly.
+
+  \sa QInputMethodEvent
+*/
+void QInputContext::sendEvent(const QInputMethodEvent &event)
+{
+    // route events over input context parents to make chaining possible.
+    QInputContext *p = qobject_cast<QInputContext *>(parent());
+    if (p) {
+        p->sendEvent(event);
+        return;
+    }
+
+    QWidget *focus = focusWidget();
+    if (!focus)
+	return;
+
+    QInputMethodEvent e(event);
+    qApp->sendEvent(focus, &e);
+}
+
+
+/*!
+    This function can be reimplemented in a subclass to handle mouse
+    press, release, double-click, and move events within the preedit
+    text. You can use the function to implement mouse-oriented user
+    interface such as text selection or popup menu for candidate
+    selection.
+
+    The \a x parameter is the offset within the string that was sent
+    with the InputMethodCompose event. The alteration boundary of \a
+    x is ensured as character boundary of preedit string accurately.
+
+    The \a event parameter is the event that was sent to the editor
+    widget. The event type is QEvent::MouseButtonPress,
+    QEvent::MouseButtonRelease, QEvent::MouseButtonDblClick or
+    QEvent::MouseButtonMove. The event's button and state indicate
+    the kind of operation that was performed.
+*/
+void QInputContext::mouseHandler(int /*x*/, QMouseEvent *event)
+{
+    // Default behavior for simple ephemeral input contexts. Some
+    // complex input contexts should not be reset here.
+    if (event->type() == QEvent::MouseButtonPress || event->type() == QEvent::MouseButtonDblClick)
+	reset();
+}
+
+
+/*!
+    Returns the font of the current input widget
+*/
+QFont QInputContext::font() const
+{
+    Q_D(const QInputContext);
+    if (!d->focusWidget)
+        return QApplication::font();
+
+    return qvariant_cast<QFont>(d->focusWidget->inputMethodQuery(Qt::ImFont));
+}
+
+/*!
+    This virtual function is called when a state in the focus widget
+    has changed. QInputContext can then use
+    QWidget::inputMethodQuery() to query the new state of the widget.
+*/
+void QInputContext::update()
+{
+}
+
+/*!
+    This virtual function is called when the specified \a widget is
+    destroyed. The \a widget is a widget on which this input context
+    is installed.
+*/
+void QInputContext::widgetDestroyed(QWidget *widget)
+{
+    Q_D(QInputContext);
+    if (widget == d->focusWidget)
+        setFocusWidget(0);
+}
+
+/*!
+    \fn void QInputContext::reset()
+
+    This function can be reimplemented in a subclass to reset the
+    state of the input method.
+
+    This function is called by several widgets to reset input
+    state. For example, a text widget call this function before
+    inserting a text to make widget ready to accept a text.
+
+    Default implementation is sufficient for simple input method. You
+    can override this function to reset external input method engines
+    in complex input method. In the case, call QInputContext::reset()
+    to ensure proper termination of inputting.
+
+    You must not send any QInputMethodEvent except empty InputMethodEnd event using
+    QInputContext::reset() at reimplemented reset(). It will break
+    input state consistency.
+*/
+
+
+/*!
+  \fn QString QInputContext::identifierName()
+
+    This function must be implemented in any subclasses to return the
+    identifier name of the input method.
+
+    Return value is the name to identify and specify input methods for
+    the input method switching mechanism and so on. The name has to be
+    consistent with QInputContextPlugin::keys(). The name has to
+    consist of ASCII characters only.
+
+    There are two different names with different responsibility in the
+    input method domain. This function returns one of them. Another
+    name is called 'display name' that stands for the name for
+    endusers appeared in a menu and so on.
+
+    \sa QInputContextPlugin::keys(), QInputContextPlugin::displayName()
+*/
+
+
+/*!
+    \fn QString QInputContext::language()
+
+    This function must be implemented in any subclasses to return a
+    language code (e.g. "zh_CN", "zh_TW", "zh_HK", "ja", "ko", ...)
+    of the input context. If the input context can handle multiple
+    languages, return the currently used one. The name has to be
+    consistent with QInputContextPlugin::language().
+
+    This information will be used by language tagging feature in
+    QInputMethodEvent. It is required to distinguish unified han characters
+    correctly. It enables proper font and character code
+    handling. Suppose CJK-awared multilingual web browser
+    (that automatically modifies fonts in CJK-mixed text) and XML editor
+    (that automatically inserts lang attr).
+*/
+
+
+/*!
+    This is a preliminary interface for Qt 4.
+*/
+QList<QAction *> QInputContext::actions()
+{
+    return QList<QAction *>();
+}
+
+/*!
+    \enum QInputContext::StandardFormat
+
+    \value PreeditFormat  The preedit text.
+    \value SelectionFormat  The selection text.
+
+    \sa standardFormat()
+*/
+
+/*!
+    Returns a QTextFormat object that specifies the format for
+    component \a s.
+*/
+QTextFormat QInputContext::standardFormat(StandardFormat s) const
+{
+    QWidget *focus = focusWidget();
+    const QPalette &pal = focus ? focus->palette() : qApp->palette();
+
+    QTextCharFormat fmt;
+    QColor bg;
+    switch (s) {
+    case QInputContext::PreeditFormat: {
+        fmt.setUnderlineStyle(QTextCharFormat::DashUnderline);
+#ifndef Q_WS_WIN
+        int h1, s1, v1, h2, s2, v2;
+        pal.color(QPalette::Base).getHsv(&h1, &s1, &v1);
+        pal.color(QPalette::Background).getHsv(&h2, &s2, &v2);
+        bg.setHsv(h1, s1, (v1 + v2) / 2);
+        fmt.setBackground(QBrush(bg));
+#endif
+        break;
+    }
+    case QInputContext::SelectionFormat: {
+        bg = pal.text().color();
+        fmt.setBackground(QBrush(bg));
+        fmt.setForeground(pal.background());
+        break;
+    }
+    }
+    return fmt;
+}
+
+#ifdef Q_WS_X11
+/*!
+    This function may be overridden only if input method is depending
+    on X11 and you need raw XEvent. Otherwise, this function must not.
+
+    This function is designed to filter raw key events for XIM, but
+    other input methods may use this to implement some special
+    features such as distinguishing Shift_L and Shift_R.
+
+    Return true if the \a event has been consumed. Otherwise, the
+    unfiltered \a event will be translated into QEvent and forwarded
+    to filterEvent(). Filtering at both x11FilterEvent() and
+    filterEvent() in single input method is allowed.
+
+    \a keywidget is a client widget into which a text is inputted. \a
+    event is inputted XEvent.
+
+    \sa filterEvent()
+*/
+bool QInputContext::x11FilterEvent(QWidget * /*keywidget*/, XEvent * /*event*/)
+{
+    return false;
+}
+#endif // Q_WS_X11
+
+QT_END_NAMESPACE
+
+#endif //Q_NO_IM
diff --git a/src/gui/inputmethod/qinputcontext.h b/src/gui/inputmethod/qinputcontext.h
new file mode 100644
index 0000000..bcaa7fe
--- /dev/null
+++ b/src/gui/inputmethod/qinputcontext.h
@@ -0,0 +1,134 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Definition of QInputContext class
+**
+** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+**
+** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+** license. You may use this file under your Qt license. Following
+** description is copied from their original file headers. Contact
+** immodule-qt@freedesktop.org if any conditions of this licensing are
+** not clear to you.
+**
+****************************************************************************/
+
+#ifndef QINPUTCONTEXT_H
+#define QINPUTCONTEXT_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qglobal.h>
+#include <QtGui/qevent.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qlist.h>
+#include <QtGui/qaction.h>
+
+#ifndef QT_NO_IM
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QWidget;
+class QFont;
+class QPopupMenu;
+class QInputContextPrivate;
+
+
+class Q_GUI_EXPORT QInputContext : public QObject
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QInputContext)
+public:
+    explicit QInputContext(QObject* parent = 0);
+    virtual ~QInputContext();
+
+    virtual QString identifierName() = 0;
+    virtual QString language() = 0;
+
+    virtual void reset() = 0;
+    virtual void update();
+
+    virtual void mouseHandler( int x, QMouseEvent *event);
+    virtual QFont font() const;
+    virtual bool isComposing() const = 0;
+
+    QWidget *focusWidget() const;
+    virtual void setFocusWidget( QWidget *w );
+
+    virtual void widgetDestroyed(QWidget *w);
+
+    virtual QList<QAction *> actions();
+
+#if defined(Q_WS_X11)
+    virtual bool x11FilterEvent( QWidget *keywidget, XEvent *event );
+#endif // Q_WS_X11
+    virtual bool filterEvent( const QEvent *event );
+
+    void sendEvent(const QInputMethodEvent &event);
+
+    enum StandardFormat {
+        PreeditFormat,
+        SelectionFormat
+    };
+    QTextFormat standardFormat(StandardFormat s) const;
+private:
+    friend class QWidget;
+    friend class QWidgetPrivate;
+    friend class QInputContextFactory;
+    friend class QApplication;
+private:   // Disabled copy constructor and operator=
+    QInputContext( const QInputContext & );
+    QInputContext &operator=( const QInputContext & );
+
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif //Q_NO_IM
+
+#endif // QINPUTCONTEXT_H
diff --git a/src/gui/inputmethod/qinputcontext_p.h b/src/gui/inputmethod/qinputcontext_p.h
new file mode 100644
index 0000000..8c1b8de
--- /dev/null
+++ b/src/gui/inputmethod/qinputcontext_p.h
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+/****************************************************************************
+**
+** Implementation of QInputContext class
+**
+** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+**
+** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+** license. You may use this file under your Qt license. Following
+** description is copied from their original file headers. Contact
+** immodule-qt@freedesktop.org if any conditions of this licensing are
+** not clear to you.
+**
+****************************************************************************/
+
+#ifndef QINPUTCONTEXT_P_H
+#define QINPUTCONTEXT_P_H
+
+#include "private/qobject_p.h"
+#include "qwidget.h"
+#include "qinputcontext.h"
+
+#ifndef QT_NO_IM
+
+QT_BEGIN_NAMESPACE
+
+class QInputContextPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QInputContext)
+public:
+    QInputContextPrivate()
+	: focusWidget(0)
+    {}
+
+    QWidget *focusWidget;
+
+#if defined(Q_WS_WIN) || defined(Q_WS_QWS)
+    static void updateImeStatus(QWidget *w, bool hasFocus);
+#endif
+};
+
+QT_END_NAMESPACE
+
+#endif
+
+#endif
+
diff --git a/src/gui/inputmethod/qinputcontextfactory.cpp b/src/gui/inputmethod/qinputcontextfactory.cpp
new file mode 100644
index 0000000..06625f9
--- /dev/null
+++ b/src/gui/inputmethod/qinputcontextfactory.cpp
@@ -0,0 +1,287 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Implementation of QInputContextFactory class
+**
+** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+**
+** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+** license. You may use this file under your Qt license. Following
+** description is copied from their original file headers. Contact
+** immodule-qt@freedesktop.org if any conditions of this licensing are
+** not clear to you.
+**
+****************************************************************************/
+
+#include "qinputcontextfactory.h"
+
+#ifndef QT_NO_IM
+
+#include "qcoreapplication.h"
+#include "qinputcontext.h"
+#include "qinputcontextplugin.h"
+
+#ifdef Q_WS_X11
+#include "private/qt_x11_p.h"
+#include "qximinputcontext_p.h"
+#endif
+#ifdef Q_WS_WIN
+#include "qwininputcontext_p.h"
+#endif
+#ifdef Q_WS_MAC
+#include "qmacinputcontext_p.h"
+#endif
+
+#include "private/qfactoryloader_p.h"
+#include "qmutex.h"
+
+QT_BEGIN_NAMESPACE
+
+#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
+    (QInputContextFactoryInterface_iid, QLatin1String("/inputmethods")))
+#endif
+
+/*!
+    \class QInputContextFactory
+    \brief The QInputContextFactory class creates QInputContext objects.
+
+    \ingroup appearance
+
+    The input context factory creates a QInputContext object for a
+    given key with QInputContextFactory::create().
+
+    The input contexts are either built-in or dynamically loaded from
+    an input context plugin (see QInputContextPlugin).
+
+    keys() returns a list of valid keys. The
+    keys are the names used, for example, to identify and specify
+    input methods for the input method switching mechanism. The names
+    have to be consistent with QInputContext::identifierName(), and
+    may only contain ASCII characters.
+
+    A key can be used to retrieve the associated input context's
+    supported languages using languages(). You
+    can retrieve the input context's description using
+    description() and finally you can get a user
+    friendly internationalized name of the QInputContext object
+    specified by the key using displayName().
+
+    \legalese
+    Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+
+    This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+    license. You may use this file under your Qt license. Following
+    description is copied from their original file headers. Contact
+    immodule-qt@freedesktop.org if any conditions of this licensing are
+    not clear to you.
+    \endlegalese
+
+    \sa QInputContext, QInputContextPlugin
+*/
+
+/*!
+    Creates and returns a QInputContext object for the input context
+    specified by \a key with the given \a parent. Keys are case
+    sensitive.
+
+    \sa keys()
+*/
+QInputContext *QInputContextFactory::create( const QString& key, QObject *parent )
+{
+    QInputContext *result = 0;
+#if defined(Q_WS_X11) && !defined(QT_NO_XIM)
+    if (key == QLatin1String("xim")) {
+        result = new QXIMInputContext;
+    }
+#endif
+#if defined(Q_WS_WIN)
+    if (key == QLatin1String("win")) {
+        result = new QWinInputContext;
+    }
+#endif
+#if defined(Q_WS_MAC)
+    if (key == QLatin1String("mac")) {
+        result = new QMacInputContext;
+    }
+#endif
+#if defined(QT_NO_LIBRARY) || defined(QT_NO_SETTINGS)
+    Q_UNUSED(key);
+#else
+    if (QInputContextFactoryInterface *factory =
+        qobject_cast<QInputContextFactoryInterface*>(loader()->instance(key))) {
+        result = factory->create(key);
+    }
+#endif
+    if (result)
+        result->setParent(parent);
+    return result;
+}
+
+
+/*!
+    Returns the list of keys this factory can create input contexts
+    for.
+
+    The keys are the names used, for example, to identify and specify
+    input methods for the input method switching mechanism.  The names
+    have to be consistent with QInputContext::identifierName(), and
+    may only contain ASCII characters.
+
+    \sa create(), displayName(), QInputContext::identifierName()
+*/
+QStringList QInputContextFactory::keys()
+{
+    QStringList result;
+#if defined(Q_WS_X11) && !defined(QT_NO_XIM)
+    result << QLatin1String("xim");
+#endif
+#if defined(Q_WS_WIN) && !defined(QT_NO_XIM)
+    result << QLatin1String("win");
+#endif
+#if defined(Q_WS_MAC)
+    result << QLatin1String("mac");
+#endif
+#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+    result += loader()->keys();
+#endif // QT_NO_LIBRARY
+    return result;
+}
+
+/*!
+    Returns the languages supported by the QInputContext object
+    specified by \a key.
+
+    The languages are expressed as language code (e.g. "zh_CN",
+    "zh_TW", "zh_HK", "ja", "ko", ...). An input context that supports
+    multiple languages can return all supported languages as a
+    QStringList. The name has to be consistent with
+    QInputContext::language().
+
+    This information may be used to optimize a user interface.
+
+    \sa keys(), QInputContext::language(), QLocale
+*/
+QStringList QInputContextFactory::languages( const QString &key )
+{
+    QStringList result;
+#if defined(Q_WS_X11) && !defined(QT_NO_XIM)
+    if (key == QLatin1String("xim"))
+        return QStringList(QString());
+#endif
+#if defined(Q_WS_WIN)
+    if (key == QLatin1String("win"))
+        return QStringList(QString());
+#endif
+#if defined(Q_WS_MAC)
+    if (key == QLatin1String("mac"))
+        return QStringList(QString());
+#endif
+#if defined(QT_NO_LIBRARY) || defined(QT_NO_SETTINGS)
+    Q_UNUSED(key);
+#else
+    if (QInputContextFactoryInterface *factory =
+        qobject_cast<QInputContextFactoryInterface*>(loader()->instance(key)))
+        result = factory->languages(key);
+#endif // QT_NO_LIBRARY
+    return result;
+}
+
+/*!
+    Returns a user friendly internationalized name of the
+    QInputContext object specified by \a key. You can, for example,
+    use this name in a menu.
+
+    \sa keys(), QInputContext::identifierName()
+*/
+QString QInputContextFactory::displayName( const QString &key )
+{
+    QString result;
+#if defined(Q_WS_X11) && !defined(QT_NO_XIM)
+    if (key == QLatin1String("xim"))
+        return QInputContext::tr( "XIM" );
+#endif
+#if defined(QT_NO_LIBRARY) || defined(QT_NO_SETTINGS)
+    Q_UNUSED(key);
+#else
+    if (QInputContextFactoryInterface *factory =
+        qobject_cast<QInputContextFactoryInterface*>(loader()->instance(key)))
+        return factory->displayName(key);
+#endif // QT_NO_LIBRARY
+    return QString();
+}
+
+/*!
+    Returns an internationalized brief description of the QInputContext
+    object specified by \a key. You can, for example, use this
+    description in a user interface.
+
+    \sa keys(), displayName()
+*/
+QString QInputContextFactory::description( const QString &key )
+{
+#if defined(Q_WS_X11) && !defined(QT_NO_XIM)
+    if (key == QLatin1String("xim"))
+        return QInputContext::tr( "XIM input method" );
+#endif
+#if defined(Q_WS_WIN) && !defined(QT_NO_XIM)
+    if (key == QLatin1String("win"))
+        return QInputContext::tr( "Windows input method" );
+#endif
+#if defined(Q_WS_MAC)
+    if (key == QLatin1String("mac"))
+        return QInputContext::tr( "Mac OS X input method" );
+#endif
+#if defined(QT_NO_LIBRARY) || defined(QT_NO_SETTINGS)
+    Q_UNUSED(key);
+#else
+    if (QInputContextFactoryInterface *factory =
+        qobject_cast<QInputContextFactoryInterface*>(loader()->instance(key)))
+        return factory->description(key);
+#endif // QT_NO_LIBRARY
+    return QString();
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_IM
diff --git a/src/gui/inputmethod/qinputcontextfactory.h b/src/gui/inputmethod/qinputcontextfactory.h
new file mode 100644
index 0000000..bc17fd3
--- /dev/null
+++ b/src/gui/inputmethod/qinputcontextfactory.h
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Definition of QInputContextFactory class
+**
+** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+**
+** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+** license. You may use this file under your Qt license. Following
+** description is copied from their original file headers. Contact
+** immodule-qt@freedesktop.org if any conditions of this licensing are
+** not clear to you.
+**
+****************************************************************************/
+
+#ifndef QINPUTCONTEXTFACTORY_H
+#define QINPUTCONTEXTFACTORY_H
+
+#include <QtCore/qstringlist.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+#ifndef QT_NO_IM
+
+class QInputContext;
+class QWidget;
+
+class Q_GUI_EXPORT QInputContextFactory
+{
+public:
+    static QStringList keys();
+    static QInputContext *create( const QString &key, QObject *parent ); // should be a toplevel widget
+    static QStringList languages( const QString &key );
+    static QString displayName( const QString &key );
+    static QString description( const QString &key );
+};
+
+#endif // QT_NO_IM
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QINPUTCONTEXTFACTORY_H
diff --git a/src/gui/inputmethod/qinputcontextplugin.cpp b/src/gui/inputmethod/qinputcontextplugin.cpp
new file mode 100644
index 0000000..69b4800
--- /dev/null
+++ b/src/gui/inputmethod/qinputcontextplugin.cpp
@@ -0,0 +1,178 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Implementation of QInputContext class
+**
+** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+**
+** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+** license. You may use this file under your Qt license. Following
+** description is copied from their original file headers. Contact
+** immodule-qt@freedesktop.org if any conditions of this licensing are
+** not clear to you.
+**
+****************************************************************************/
+
+#include "qinputcontextplugin.h"
+
+#ifndef QT_NO_IM
+#ifndef QT_NO_LIBRARY
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QInputContextPlugin
+    \brief The QInputContextPlugin class provides an abstract base for custom QInputContext plugins.
+
+    \reentrant
+    \ingroup plugins
+
+    The input context plugin is a simple plugin interface that makes it
+    easy to create custom input contexts that can be loaded dynamically
+    into applications.
+
+    To create an input context plugin you subclass this base class,
+    reimplement the pure virtual functions keys(), create(),
+    languages(), displayName(), and description(), and export the
+    class with the Q_EXPORT_PLUGIN2() macro.
+
+    \legalese
+    Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+
+    This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+    license. You may use this file under your Qt license. Following
+    description is copied from their original file headers. Contact
+    immodule-qt@freedesktop.org if any conditions of this licensing are
+    not clear to you.
+    \endlegalese
+
+    \sa QInputContext, {How to Create Qt Plugins}
+*/
+
+/*!
+    \fn QStringList QInputContextPlugin::keys() const
+
+    Returns the list of QInputContext keys this plugin provides.
+
+    These keys are usually the class names of the custom input context
+    that are implemented in the plugin. The names are used, for
+    example, to identify and specify input methods for the input
+    method switching mechanism.  They have to be consistent with
+    QInputContext::identifierName(), and may only contain ASCII
+    characters.
+
+    \sa create(), displayName(), QInputContext::identifierName()
+*/
+
+/*!
+    \fn QInputContext* QInputContextPlugin::create( const QString& key )
+
+    Creates and returns a QInputContext object for the input context
+    key \a key.  The input context key is usually the class name of
+    the required input method.
+
+    \sa keys()
+*/
+
+/*!
+    \fn QStringList QInputContextPlugin::languages(const QString &key)
+
+    Returns the languages supported by the QInputContext object
+    specified by \a key.
+
+    The languages are expressed as language code (e.g. "zh_CN",
+    "zh_TW", "zh_HK", "ja", "ko", ...). An input context that supports
+    multiple languages can return all supported languages as
+    QStringList. The name has to be consistent with
+    QInputContext::language().
+
+    This information may be used to optimize user interface.
+
+    \sa keys(), QInputContext::language(), QLocale
+*/
+
+/*!
+    \fn QString QInputContextPlugin::displayName(const QString &key)
+
+    Returns a user friendly internationalized name of the
+    QInputContext object specified by \a key. You can, for example,
+    use this name in a menu.
+
+    \sa keys(), QInputContext::identifierName()
+*/
+
+/*!
+    \fn QString QInputContextPlugin::description(const QString &key)
+
+    Returns an internationalized brief description of the QInputContext
+    object specified by \a key. You can, for example, use this
+    description in a user interface.
+
+    \sa keys(), displayName()
+*/
+
+
+/*!
+    Constructs a input context plugin with the given \a parent. This
+    is invoked automatically by the Q_EXPORT_PLUGIN2() macro.
+*/
+QInputContextPlugin::QInputContextPlugin(QObject *parent)
+    :QObject(parent)
+{
+}
+
+/*!
+    Destroys the input context plugin.
+
+    You never have to call this explicitly. Qt destroys a plugin
+    automatically when it's no longer used.
+*/
+QInputContextPlugin::~QInputContextPlugin()
+{
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_LIBRARY
+
+#endif // QT_NO_IM
diff --git a/src/gui/inputmethod/qinputcontextplugin.h b/src/gui/inputmethod/qinputcontextplugin.h
new file mode 100644
index 0000000..6c57284
--- /dev/null
+++ b/src/gui/inputmethod/qinputcontextplugin.h
@@ -0,0 +1,106 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Definition of QInputContextPlugin class
+**
+** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+**
+** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+** license. You may use this file under your Qt license. Following
+** description is copied from their original file headers. Contact
+** immodule-qt@freedesktop.org if any conditions of this licensing are
+** not clear to you.
+**
+****************************************************************************/
+
+#ifndef QINPUTCONTEXTPLUGIN_H
+#define QINPUTCONTEXTPLUGIN_H
+
+#include <QtCore/qplugin.h>
+#include <QtCore/qfactoryinterface.h>
+#include <QtCore/qstringlist.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+#if !defined(QT_NO_IM) && !defined(QT_NO_LIBRARY)
+
+class QInputContext;
+class QInputContextPluginPrivate;
+
+struct Q_GUI_EXPORT QInputContextFactoryInterface : public QFactoryInterface
+{
+    virtual QInputContext *create( const QString &key ) = 0;
+    virtual QStringList languages( const QString &key ) = 0;
+    virtual QString displayName( const QString &key ) = 0;
+    virtual QString description( const QString &key ) = 0;
+};
+
+#define QInputContextFactoryInterface_iid "com.trolltech.Qt.QInputContextFactoryInterface"
+Q_DECLARE_INTERFACE(QInputContextFactoryInterface, QInputContextFactoryInterface_iid)
+
+class Q_GUI_EXPORT QInputContextPlugin : public QObject, public QInputContextFactoryInterface
+{
+    Q_OBJECT
+    Q_INTERFACES(QInputContextFactoryInterface:QFactoryInterface)
+public:
+    explicit QInputContextPlugin(QObject *parent = 0);
+    ~QInputContextPlugin();
+
+    virtual QStringList keys() const = 0;
+    virtual QInputContext *create( const QString &key ) = 0;
+    virtual QStringList languages( const QString &key ) = 0;
+    virtual QString displayName( const QString &key ) = 0;
+    virtual QString description( const QString &key ) = 0;
+};
+
+#endif // QT_NO_IM
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QINPUTCONTEXTPLUGIN_H
diff --git a/src/gui/inputmethod/qmacinputcontext_mac.cpp b/src/gui/inputmethod/qmacinputcontext_mac.cpp
new file mode 100644
index 0000000..f0e7ea9
--- /dev/null
+++ b/src/gui/inputmethod/qmacinputcontext_mac.cpp
@@ -0,0 +1,349 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <qvarlengtharray.h>
+#include <qwidget.h>
+#include <private/qmacinputcontext_p.h>
+#include "qtextformat.h"
+#include <qdebug.h>
+#include <private/qapplication_p.h>
+
+QT_BEGIN_NAMESPACE
+
+extern bool qt_sendSpontaneousEvent(QObject*, QEvent*);
+
+#if (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5)
+#  define typeRefCon typeSInt32
+#  define typeByteCount typeSInt32
+#endif
+
+static QTextFormat qt_mac_compose_format()
+{
+    QTextCharFormat ret;
+    ret.setFontUnderline(true);
+    return ret;
+}
+
+QMacInputContext::QMacInputContext(QObject *parent)
+    : QInputContext(parent), composing(false), recursionGuard(false), textDocument(0)
+{
+//    createTextDocument();
+}
+
+QMacInputContext::~QMacInputContext()
+{
+#ifdef Q_WS_MAC32
+    if(textDocument)
+        DeleteTSMDocument(textDocument);
+#endif
+}
+
+void
+QMacInputContext::createTextDocument()
+{
+#ifdef Q_WS_MAC32
+    if(!textDocument) {
+        InterfaceTypeList itl = { kUnicodeDocument };
+        NewTSMDocument(1, itl, &textDocument, SRefCon(this));
+    }
+#endif
+}
+
+
+QString QMacInputContext::language()
+{
+    return QString();
+}
+
+
+void QMacInputContext::mouseHandler(int pos, QMouseEvent *e)
+{
+#ifdef Q_WS_MAC32
+    if(e->type() != QEvent::MouseButtonPress)
+        return;
+
+    if (!composing)
+        return;
+    if (pos < 0 || pos > currentText.length())
+        reset();
+    // ##### handle mouse position
+#endif
+}
+
+#if !defined QT_MAC_USE_COCOA
+
+void QMacInputContext::reset()
+{
+    if (recursionGuard)
+        return;
+    if (!currentText.isEmpty()){
+        QInputMethodEvent e;
+        e.setCommitString(currentText);
+        qt_sendSpontaneousEvent(focusWidget(), &e);
+        currentText = QString();
+    }
+    recursionGuard = true;
+    createTextDocument();
+    composing = false;
+    ActivateTSMDocument(textDocument);
+    FixTSMDocument(textDocument);
+    recursionGuard = false;
+}
+
+bool QMacInputContext::isComposing() const
+{
+    return composing;
+}
+#endif 
+
+void QMacInputContext::setFocusWidget(QWidget *w)
+{
+    createTextDocument();
+#ifdef Q_WS_MAC32
+    if(w)
+        ActivateTSMDocument(textDocument);
+    else
+        DeactivateTSMDocument(textDocument);
+#endif
+    QInputContext::setFocusWidget(w);
+}
+
+
+static EventTypeSpec input_events[] = {
+    { kEventClassTextInput, kEventTextInputUnicodeForKeyEvent },
+    { kEventClassTextInput, kEventTextInputOffsetToPos },
+    { kEventClassTextInput, kEventTextInputUpdateActiveInputArea }
+};
+static EventHandlerUPP input_proc_handlerUPP = 0;
+static EventHandlerRef input_proc_handler = 0;
+
+void
+QMacInputContext::initialize()
+{
+#ifdef Q_WS_MAC32
+    if(!input_proc_handler) {
+        input_proc_handlerUPP = NewEventHandlerUPP(QMacInputContext::globalEventProcessor);
+        InstallEventHandler(GetApplicationEventTarget(), input_proc_handlerUPP,
+                            GetEventTypeCount(input_events), input_events,
+                            0, &input_proc_handler);
+    }
+#endif
+}
+
+void
+QMacInputContext::cleanup()
+{
+#ifdef Q_WS_MAC32
+    if(input_proc_handler) {
+        RemoveEventHandler(input_proc_handler);
+        input_proc_handler = 0;
+    }
+    if(input_proc_handlerUPP) {
+        DisposeEventHandlerUPP(input_proc_handlerUPP);
+        input_proc_handlerUPP = 0;
+    }
+#endif
+}
+
+OSStatus
+QMacInputContext::globalEventProcessor(EventHandlerCallRef, EventRef event, void *)
+{
+#ifdef Q_WS_MAC32
+    QScopedLoopLevelCounter loopLevelCounter(QApplicationPrivate::instance()->threadData);
+
+    SRefCon refcon = 0;
+    GetEventParameter(event, kEventParamTextInputSendRefCon, typeRefCon, 0,
+                      sizeof(refcon), 0, &refcon);
+    QMacInputContext *context = reinterpret_cast<QMacInputContext*>(refcon);
+
+    bool handled_event=true;
+    UInt32 ekind = GetEventKind(event), eclass = GetEventClass(event);
+    switch(eclass) {
+    case kEventClassTextInput: {
+        handled_event = false;
+        QWidget *widget = QApplicationPrivate::focus_widget;
+        if(!widget || (context && widget->inputContext() != context)) {
+            handled_event = false;
+        } else if(ekind == kEventTextInputOffsetToPos) {
+            if(!widget->testAttribute(Qt::WA_InputMethodEnabled)) {
+                handled_event = false;
+                break;
+            }
+
+            QRect mr(widget->inputMethodQuery(Qt::ImMicroFocus).toRect());
+            QPoint mp(widget->mapToGlobal(QPoint(mr.topLeft())));
+            Point pt;
+            pt.h = mp.x();
+            pt.v = mp.y() + mr.height();
+            SetEventParameter(event, kEventParamTextInputReplyPoint, typeQDPoint,
+                              sizeof(pt), &pt);
+            handled_event = true;
+        } else if(ekind == kEventTextInputUpdateActiveInputArea) {
+            if(!widget->testAttribute(Qt::WA_InputMethodEnabled)) {
+                handled_event = false;
+                break;
+            }
+
+            if (context->recursionGuard)
+                break;
+
+            ByteCount unilen = 0;
+            GetEventParameter(event, kEventParamTextInputSendText, typeUnicodeText,
+                              0, 0, &unilen, 0);
+            UniChar *unicode = (UniChar*)NewPtr(unilen);
+            GetEventParameter(event, kEventParamTextInputSendText, typeUnicodeText,
+                              0, unilen, 0, unicode);
+            QString text((QChar*)unicode, unilen / sizeof(UniChar));
+            DisposePtr((char*)unicode);
+
+            ByteCount fixed_length = 0;
+            GetEventParameter(event, kEventParamTextInputSendFixLen, typeByteCount, 0,
+                              sizeof(fixed_length), 0, &fixed_length);
+            if(fixed_length == ULONG_MAX || fixed_length == unilen) {
+                QInputMethodEvent e;
+                e.setCommitString(text);
+                context->currentText = QString();
+                qt_sendSpontaneousEvent(context->focusWidget(), &e);
+                handled_event = true;
+                context->reset();
+            } else {
+                ByteCount rngSize = 0;
+                OSStatus err = GetEventParameter(event, kEventParamTextInputSendHiliteRng, typeTextRangeArray, 0,
+                                                 0, &rngSize, 0);
+                QVarLengthArray<TextRangeArray> highlight(rngSize);
+                if (noErr == err) {
+                    err = GetEventParameter(event, kEventParamTextInputSendHiliteRng, typeTextRangeArray, 0,
+                                            rngSize, &rngSize, highlight.data());
+                }
+                context->composing = true;
+                if(fixed_length > 0) {
+                    const int qFixedLength = fixed_length / sizeof(UniChar);
+                    QList<QInputMethodEvent::Attribute> attrs;
+                    attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat,
+                                                          qFixedLength, text.length()-qFixedLength,
+                                                          qt_mac_compose_format());
+                    QInputMethodEvent e(text, attrs);
+                    context->currentText = text;
+                    e.setCommitString(text.left(qFixedLength), 0, qFixedLength);
+                    qt_sendSpontaneousEvent(widget, &e);
+                    handled_event = true;
+                } else {
+                    /* Apple's enums that they have removed from Tiger :(
+                    enum {
+                        kCaretPosition = 1,
+                        kRawText = 2,
+                        kSelectedRawText = 3,
+                        kConvertedText = 4,
+                        kSelectedConvertedText = 5,
+                        kBlockFillText = 6,
+                        kOutlineText = 7,
+                        kSelectedText = 8
+                    };
+                    */
+#ifndef kConvertedText
+#define kConvertedText 4
+#endif
+#ifndef kCaretPosition
+#define kCaretPosition 1
+#endif
+                    QList<QInputMethodEvent::Attribute> attrs;
+                    if (!highlight.isEmpty()) {
+                        TextRangeArray *data = highlight.data();
+                        for (int i = 0; i < data->fNumOfRanges; ++i) {
+                            int start = data->fRange[i].fStart / sizeof(UniChar);
+                            int len = (data->fRange[i].fEnd - data->fRange[i].fStart) / sizeof(UniChar);
+                            if (data->fRange[i].fHiliteStyle == kCaretPosition) {
+                                attrs << QInputMethodEvent::Attribute(QInputMethodEvent::Cursor, start, 0, QVariant());
+                                continue;
+                            }
+                            QTextCharFormat format;
+                            format.setFontUnderline(true);
+                            if (data->fRange[i].fHiliteStyle == kConvertedText)
+                                format.setUnderlineColor(Qt::gray);
+                            else
+                                format.setUnderlineColor(Qt::black);
+                            attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, start, len, format);
+                        }
+                    } else {
+                        attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat,
+                                0, text.length(), qt_mac_compose_format());
+                    }
+                    context->currentText = text;
+                    QInputMethodEvent e(text, attrs);
+                    qt_sendSpontaneousEvent(widget, &e);
+                    handled_event = true;
+                }
+            }
+#if 0
+            if(!context->composing)
+                handled_event = false;
+#endif
+
+            extern bool qt_mac_eat_unicode_key; //qapplication_mac.cpp
+            qt_mac_eat_unicode_key = handled_event;
+        } else if(ekind == kEventTextInputUnicodeForKeyEvent) {
+            EventRef key_ev = 0;
+            GetEventParameter(event, kEventParamTextInputSendKeyboardEvent, typeEventRef, 0,
+                              sizeof(key_ev), 0, &key_ev);
+            QString text;
+            ByteCount unilen = 0;
+            if(GetEventParameter(key_ev, kEventParamKeyUnicodes, typeUnicodeText, 0, 0, &unilen, 0) == noErr) {
+                UniChar *unicode = (UniChar*)NewPtr(unilen);
+                GetEventParameter(key_ev, kEventParamKeyUnicodes, typeUnicodeText, 0, unilen, 0, unicode);
+                text = QString((QChar*)unicode, unilen / sizeof(UniChar));
+                DisposePtr((char*)unicode);
+            }
+            unsigned char chr = 0;
+            GetEventParameter(key_ev, kEventParamKeyMacCharCodes, typeChar, 0, sizeof(chr), 0, &chr);
+            if(!chr || chr >= 128 || (text.length() > 0 && (text.length() > 1 || text.at(0) != QLatin1Char(chr))))
+                handled_event = !widget->testAttribute(Qt::WA_InputMethodEnabled);
+        }
+        break; }
+    default:
+        break;
+    }
+    if(!handled_event) //let the event go through
+        return eventNotHandledErr;
+#endif
+    return noErr; //we eat the event
+}
+
+QT_END_NAMESPACE
diff --git a/src/gui/inputmethod/qmacinputcontext_p.h b/src/gui/inputmethod/qmacinputcontext_p.h
new file mode 100644
index 0000000..f708040
--- /dev/null
+++ b/src/gui/inputmethod/qmacinputcontext_p.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMACINPUTCONTEXT_P_H
+#define QMACINPUTCONTEXT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtGui/qinputcontext.h"
+#include "private/qt_mac_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class Q_GUI_EXPORT QMacInputContext : public QInputContext
+{
+    Q_OBJECT
+    //Q_DECLARE_PRIVATE(QMacInputContext)
+    void createTextDocument();
+public:
+    explicit QMacInputContext(QObject* parent = 0);
+    virtual ~QMacInputContext();
+
+    virtual void setFocusWidget(QWidget *w);
+    virtual QString identifierName() { return QLatin1String("mac"); }
+    virtual QString language();
+
+    virtual void reset();
+
+    virtual bool isComposing() const;
+
+    static OSStatus globalEventProcessor(EventHandlerCallRef, EventRef, void *);
+    static void initialize();
+    static void cleanup();
+protected:
+    void mouseHandler(int pos, QMouseEvent *);
+private:
+    bool composing;
+    bool recursionGuard;
+    TSMDocumentID textDocument;
+    QString currentText;
+};
+
+QT_END_NAMESPACE
+
+#endif // QMACINPUTCONTEXT_P_H
diff --git a/src/gui/inputmethod/qwininputcontext_p.h b/src/gui/inputmethod/qwininputcontext_p.h
new file mode 100644
index 0000000..38d7e32
--- /dev/null
+++ b/src/gui/inputmethod/qwininputcontext_p.h
@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWININPUTCONTEXT_P_H
+#define QWININPUTCONTEXT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of qinputcontext.cpp.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtGui/qinputcontext.h"
+#include "QtCore/qt_windows.h"
+
+QT_BEGIN_NAMESPACE
+
+class QWinInputContext : public QInputContext
+{
+    Q_OBJECT
+public:
+    explicit QWinInputContext(QObject* parent = 0);
+    virtual ~QWinInputContext();
+
+    virtual QString identifierName() { return QLatin1String("win"); }
+    virtual QString language();
+
+    virtual void reset();
+    virtual void update();
+
+    virtual void mouseHandler(int x, QMouseEvent *event);
+    virtual bool isComposing() const;
+
+    virtual void setFocusWidget(QWidget *w);
+
+    bool startComposition();
+    bool endComposition();
+    bool composition(LPARAM lparam);
+
+    static void TranslateMessage(const MSG *msg);
+    static LRESULT DefWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+    static void enablePopupChild(QWidget *w, bool e);
+    static void enable(QWidget *w, bool e);
+
+private:
+    void init();
+    bool recursionGuard;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWININPUTCONTEXT_P_H
diff --git a/src/gui/inputmethod/qwininputcontext_win.cpp b/src/gui/inputmethod/qwininputcontext_win.cpp
new file mode 100644
index 0000000..720f0b8
--- /dev/null
+++ b/src/gui/inputmethod/qwininputcontext_win.cpp
@@ -0,0 +1,861 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwininputcontext_p.h"
+#include "qinputcontext_p.h"
+
+#include "qfont.h"
+#include "qwidget.h"
+#include "qapplication.h"
+#include "qlibrary.h"
+#include "qevent.h"
+#include "qtextformat.h"
+
+//#define Q_IME_DEBUG
+
+/* Active Input method support on Win95/98/NT */
+#include <objbase.h>
+#include <initguid.h>
+
+#ifdef Q_IME_DEBUG
+#include "qdebug.h"
+#endif 
+
+QT_BEGIN_NAMESPACE
+
+extern bool qt_sendSpontaneousEvent(QObject*, QEvent*);
+#if defined(Q_OS_WINCE)
+extern void qt_wince_show_SIP(bool show);   // defined in qguifunctions_wince.cpp
+#endif
+
+DEFINE_GUID(IID_IActiveIMMApp,
+0x08c0e040, 0x62d1, 0x11d1, 0x93, 0x26, 0x0, 0x60, 0xb0, 0x67, 0xb8, 0x6e);
+
+
+
+DEFINE_GUID(CLSID_CActiveIMM,
+0x4955DD33, 0xB159, 0x11d0, 0x8F, 0xCF, 0x0, 0xAA, 0x00, 0x6B, 0xCC, 0x59);
+
+
+
+DEFINE_GUID(IID_IActiveIMMMessagePumpOwner,
+0xb5cf2cfa, 0x8aeb, 0x11d1, 0x93, 0x64, 0x0, 0x60, 0xb0, 0x67, 0xb8, 0x6e);
+
+
+
+interface IEnumRegisterWordW;
+interface IEnumInputContext;
+
+
+bool qt_sendSpontaneousEvent(QObject*, QEvent*);
+
+
+#define IFMETHOD HRESULT STDMETHODCALLTYPE
+
+interface IActiveIMMApp : public IUnknown
+{
+public:
+    virtual IFMETHOD AssociateContext(HWND hWnd, HIMC hIME, HIMC __RPC_FAR *phPrev) = 0;
+    virtual IFMETHOD dummy_ConfigureIMEA() = 0;
+    virtual IFMETHOD ConfigureIMEW(HKL hKL, HWND hWnd, DWORD dwMode, REGISTERWORDW __RPC_FAR *pData) = 0;
+    virtual IFMETHOD CreateContext(HIMC __RPC_FAR *phIMC) = 0;
+    virtual IFMETHOD DestroyContext(HIMC hIME) = 0;
+    virtual IFMETHOD dummy_EnumRegisterWordA() = 0;
+    virtual IFMETHOD EnumRegisterWordW(HKL hKL, LPWSTR szReading, DWORD dwStyle, LPWSTR szRegister, LPVOID pData,
+        IEnumRegisterWordW __RPC_FAR *__RPC_FAR *pEnum) = 0;
+    virtual IFMETHOD dummy_EscapeA() = 0;
+    virtual IFMETHOD EscapeW(HKL hKL, HIMC hIMC, UINT uEscape, LPVOID pData, LRESULT __RPC_FAR *plResult) = 0;
+    virtual IFMETHOD dummy_GetCandidateListA() = 0;
+    virtual IFMETHOD GetCandidateListW(HIMC hIMC, DWORD dwIndex, UINT uBufLen, CANDIDATELIST __RPC_FAR *pCandList,
+        UINT __RPC_FAR *puCopied) = 0;
+    virtual IFMETHOD dummy_GetCandidateListCountA() = 0;
+    virtual IFMETHOD GetCandidateListCountW(HIMC hIMC, DWORD __RPC_FAR *pdwListSize, DWORD __RPC_FAR *pdwBufLen) = 0;
+    virtual IFMETHOD GetCandidateWindow(HIMC hIMC, DWORD dwIndex, CANDIDATEFORM __RPC_FAR *pCandidate) = 0;
+    virtual IFMETHOD dummy_GetCompositionFontA() = 0;
+    virtual IFMETHOD GetCompositionFontW(HIMC hIMC, LOGFONTW __RPC_FAR *plf) = 0;
+    virtual IFMETHOD dummy_GetCompositionStringA() = 0;
+    virtual IFMETHOD GetCompositionStringW(HIMC hIMC, DWORD dwIndex, DWORD dwBufLen, LONG __RPC_FAR *plCopied, LPVOID pBuf) = 0;
+    virtual IFMETHOD GetCompositionWindow(HIMC hIMC, COMPOSITIONFORM __RPC_FAR *pCompForm) = 0;
+    virtual IFMETHOD GetContext(HWND hWnd, HIMC __RPC_FAR *phIMC) = 0;
+    virtual IFMETHOD dummy_GetConversionListA() = 0;
+    virtual IFMETHOD GetConversionListW(HKL hKL, HIMC hIMC, LPWSTR pSrc, UINT uBufLen, UINT uFlag,
+        CANDIDATELIST __RPC_FAR *pDst, UINT __RPC_FAR *puCopied) = 0;
+    virtual IFMETHOD GetConversionStatus(HIMC hIMC, DWORD __RPC_FAR *pfdwConversion, DWORD __RPC_FAR *pfdwSentence) = 0;
+    virtual IFMETHOD GetDefaultIMEWnd(HWND hWnd, HWND __RPC_FAR *phDefWnd) = 0;
+    virtual IFMETHOD dummy_GetDescriptionA() = 0;
+    virtual IFMETHOD GetDescriptionW(HKL hKL, UINT uBufLen, LPWSTR szDescription, UINT __RPC_FAR *puCopied) = 0;
+    virtual IFMETHOD dummy_GetGuideLineA() = 0;
+    virtual IFMETHOD GetGuideLineW(HIMC hIMC, DWORD dwIndex, DWORD dwBufLen, LPWSTR pBuf, DWORD __RPC_FAR *pdwResult) = 0;
+    virtual IFMETHOD dummy_GetIMEFileNameA() = 0;
+    virtual IFMETHOD GetIMEFileNameW(HKL hKL, UINT uBufLen, LPWSTR szFileName, UINT __RPC_FAR *puCopied) = 0;
+    virtual IFMETHOD GetOpenStatus(HIMC hIMC) = 0;
+    virtual IFMETHOD GetProperty(HKL hKL, DWORD fdwIndex, DWORD __RPC_FAR *pdwProperty) = 0;
+    virtual IFMETHOD dummy_GetRegisterWordStyleA() = 0;
+    virtual IFMETHOD GetRegisterWordStyleW(HKL hKL, UINT nItem, STYLEBUFW __RPC_FAR *pStyleBuf, UINT __RPC_FAR *puCopied) = 0;
+    virtual IFMETHOD GetStatusWindowPos(HIMC hIMC, POINT __RPC_FAR *pptPos) = 0;
+    virtual IFMETHOD GetVirtualKey(HWND hWnd, UINT __RPC_FAR *puVirtualKey) = 0;
+    virtual IFMETHOD dummy_InstallIMEA() = 0;
+    virtual IFMETHOD InstallIMEW(LPWSTR szIMEFileName, LPWSTR szLayoutText, HKL __RPC_FAR *phKL) = 0;
+    virtual IFMETHOD IsIME(HKL hKL) = 0;
+    virtual IFMETHOD dummy_IsUIMessageA() = 0;
+    virtual IFMETHOD IsUIMessageW(HWND hWndIME, UINT msg, WPARAM wParam, LPARAM lParam) = 0;
+    virtual IFMETHOD NotifyIME(HIMC hIMC, DWORD dwAction, DWORD dwIndex, DWORD dwValue) = 0;
+    virtual IFMETHOD dummy_RegisterWordA() = 0;
+    virtual IFMETHOD RegisterWordW(HKL hKL, LPWSTR szReading, DWORD dwStyle, LPWSTR szRegister) = 0;
+    virtual IFMETHOD ReleaseContext(HWND hWnd, HIMC hIMC) = 0;
+    virtual IFMETHOD SetCandidateWindow(HIMC hIMC, CANDIDATEFORM __RPC_FAR *pCandidate) = 0;
+    virtual IFMETHOD SetCompositionFontA(HIMC hIMC, LOGFONTA __RPC_FAR *plf) = 0;
+    virtual IFMETHOD SetCompositionFontW(HIMC hIMC, LOGFONTW __RPC_FAR *plf) = 0;
+    virtual IFMETHOD dummy_SetCompositionStringA() = 0;
+    virtual IFMETHOD SetCompositionStringW(HIMC hIMC, DWORD dwIndex, LPVOID pComp, DWORD dwCompLen,
+        LPVOID pRead, DWORD dwReadLen) = 0;
+    virtual IFMETHOD SetCompositionWindow(HIMC hIMC, COMPOSITIONFORM __RPC_FAR *pCompForm) = 0;
+    virtual IFMETHOD SetConversionStatus(HIMC hIMC, DWORD fdwConversion, DWORD fdwSentence) = 0;
+    virtual IFMETHOD SetOpenStatus(HIMC hIMC, BOOL fOpen) = 0;
+    virtual IFMETHOD SetStatusWindowPos(HIMC hIMC, POINT __RPC_FAR *pptPos) = 0;
+    virtual IFMETHOD SimulateHotKey(HWND hWnd, DWORD dwHotKeyID) = 0;
+    virtual IFMETHOD dummy_UnregisterWordA() = 0;
+    virtual IFMETHOD UnregisterWordW(HKL hKL, LPWSTR szReading, DWORD dwStyle, LPWSTR szUnregister) = 0;
+    virtual IFMETHOD Activate(BOOL fRestoreLayout) = 0;
+    virtual IFMETHOD Deactivate(void) = 0;
+    virtual IFMETHOD OnDefWindowProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam, LRESULT __RPC_FAR *plResult) = 0;
+    virtual IFMETHOD FilterClientWindows(ATOM __RPC_FAR *aaClassList, UINT uSize) = 0;
+    virtual IFMETHOD dummy_GetCodePageA() = 0;
+    virtual IFMETHOD GetLangId(HKL hKL, LANGID __RPC_FAR *plid) = 0;
+    virtual IFMETHOD AssociateContextEx(HWND hWnd, HIMC hIMC, DWORD dwFlags) = 0;
+    virtual IFMETHOD DisableIME(DWORD idThread) = 0;
+    virtual IFMETHOD dummy_GetImeMenuItemsA() = 0;
+    virtual IFMETHOD GetImeMenuItemsW(HIMC hIMC, DWORD dwFlags, DWORD dwType, /*IMEMENUITEMINFOW*/ void __RPC_FAR *pImeParentMenu,
+        /*IMEMENUITEMINFOW*/ void __RPC_FAR *pImeMenu, DWORD dwSize, DWORD __RPC_FAR *pdwResult) = 0;
+    virtual IFMETHOD EnumInputContext(DWORD idThread, IEnumInputContext __RPC_FAR *__RPC_FAR *ppEnum) = 0;
+};
+
+interface IActiveIMMMessagePumpOwner : public IUnknown
+{
+public:
+    virtual IFMETHOD Start(void) = 0;
+    virtual IFMETHOD End(void) = 0;
+    virtual IFMETHOD OnTranslateMessage(const MSG __RPC_FAR *pMsg) = 0;
+    virtual IFMETHOD Pause(DWORD __RPC_FAR *pdwCookie) = 0;
+    virtual IFMETHOD Resume(DWORD dwCookie) = 0;
+};
+
+
+static IActiveIMMApp *aimm = 0;
+static IActiveIMMMessagePumpOwner *aimmpump = 0;
+static QString *imeComposition = 0;
+static int        imePosition    = -1;
+bool qt_use_rtl_extensions = false;
+static bool haveCaret = false;
+
+#ifndef LGRPID_INSTALLED
+#define LGRPID_INSTALLED          0x00000001  // installed language group ids
+#define LGRPID_SUPPORTED          0x00000002  // supported language group ids
+#endif
+
+#ifndef LGRPID_ARABIC
+#define LGRPID_WESTERN_EUROPE        0x0001   // Western Europe & U.S.
+#define LGRPID_CENTRAL_EUROPE        0x0002   // Central Europe
+#define LGRPID_BALTIC                0x0003   // Baltic
+#define LGRPID_GREEK                 0x0004   // Greek
+#define LGRPID_CYRILLIC              0x0005   // Cyrillic
+#define LGRPID_TURKISH               0x0006   // Turkish
+#define LGRPID_JAPANESE              0x0007   // Japanese
+#define LGRPID_KOREAN                0x0008   // Korean
+#define LGRPID_TRADITIONAL_CHINESE   0x0009   // Traditional Chinese
+#define LGRPID_SIMPLIFIED_CHINESE    0x000a   // Simplified Chinese
+#define LGRPID_THAI                  0x000b   // Thai
+#define LGRPID_HEBREW                0x000c   // Hebrew
+#define LGRPID_ARABIC                0x000d   // Arabic
+#define LGRPID_VIETNAMESE            0x000e   // Vietnamese
+#define LGRPID_INDIC                 0x000f   // Indic
+#define LGRPID_GEORGIAN              0x0010   // Georgian
+#define LGRPID_ARMENIAN              0x0011   // Armenian
+#endif
+
+static DWORD WM_MSIME_MOUSE = 0;
+
+QWinInputContext::QWinInputContext(QObject *parent)
+    : QInputContext(parent), recursionGuard(false)
+{
+    if (QSysInfo::WindowsVersion < QSysInfo::WV_2000) {
+        // try to get the Active IMM COM object on Win95/98/NT, where english versions don't
+        // support the regular Windows input methods.
+        if (CoCreateInstance(CLSID_CActiveIMM, NULL, CLSCTX_INPROC_SERVER,
+            IID_IActiveIMMApp, (LPVOID *)&aimm) != S_OK) {
+            aimm = 0;
+        }
+        if (aimm && (aimm->QueryInterface(IID_IActiveIMMMessagePumpOwner, (LPVOID *)&aimmpump) != S_OK ||
+                        aimm->Activate(true) != S_OK)) {
+            aimm->Release();
+            aimm = 0;
+            if (aimmpump)
+                aimmpump->Release();
+            aimmpump = 0;
+        }
+        if (aimmpump)
+            aimmpump->Start();
+    }
+
+#ifndef Q_OS_WINCE
+    QSysInfo::WinVersion ver = QSysInfo::windowsVersion();
+    if (ver & QSysInfo::WV_NT_based  && ver >= QSysInfo::WV_VISTA) {
+        // Since the IsValidLanguageGroup/IsValidLocale functions always return true on 
+        // Vista, check the Keyboard Layouts for enabling RTL. 
+        UINT nLayouts = GetKeyboardLayoutList(0, 0);
+        if (nLayouts) {
+            HKL *lpList = new HKL[nLayouts];
+            GetKeyboardLayoutList(nLayouts, lpList);
+            for (int i = 0; i<(int)nLayouts; i++) {
+                WORD plangid = PRIMARYLANGID((quintptr)lpList[i]);
+                if (plangid == LANG_ARABIC 
+                    || plangid ==  LANG_HEBREW
+                    || plangid ==  LANG_FARSI
+#ifdef LANG_SYRIAC
+                    || plangid ==  LANG_SYRIAC
+#endif
+                    ) {
+                        qt_use_rtl_extensions = true;
+                        break;
+                }
+            }
+            delete []lpList;
+        }
+    } else {
+	    // figure out whether a RTL language is installed
+    	typedef BOOL(WINAPI *PtrIsValidLanguageGroup)(DWORD,DWORD);
+    	PtrIsValidLanguageGroup isValidLanguageGroup = (PtrIsValidLanguageGroup)QLibrary::resolve(QLatin1String("kernel32"), "IsValidLanguageGroup");
+    	if (isValidLanguageGroup) {
+        	qt_use_rtl_extensions = isValidLanguageGroup(LGRPID_ARABIC, LGRPID_INSTALLED)
+	            	                 || isValidLanguageGroup(LGRPID_HEBREW, LGRPID_INSTALLED);
+    	}
+    	qt_use_rtl_extensions |= IsValidLocale(MAKELCID(MAKELANGID(LANG_ARABIC, SUBLANG_DEFAULT), SORT_DEFAULT), LCID_INSTALLED)
+        	                  || IsValidLocale(MAKELCID(MAKELANGID(LANG_HEBREW, SUBLANG_DEFAULT), SORT_DEFAULT), LCID_INSTALLED)
+#ifdef LANG_SYRIAC
+            	              || IsValidLocale(MAKELCID(MAKELANGID(LANG_SYRIAC, SUBLANG_DEFAULT), SORT_DEFAULT), LCID_INSTALLED)
+#endif
+                	          || IsValidLocale(MAKELCID(MAKELANGID(LANG_FARSI, SUBLANG_DEFAULT), SORT_DEFAULT), LCID_INSTALLED);
+    }
+#else
+    qt_use_rtl_extensions = false;
+#endif
+
+    WM_MSIME_MOUSE = QT_WA_INLINE(RegisterWindowMessage(L"MSIMEMouseOperation"), RegisterWindowMessageA("MSIMEMouseOperation"));
+}
+
+QWinInputContext::~QWinInputContext()
+{
+    // release active input method if we have one
+    if (aimm) {
+        aimmpump->End();
+        aimmpump->Release();
+        aimm->Deactivate();
+        aimm->Release();
+        aimm = 0;
+        aimmpump = 0;
+    }
+    delete imeComposition;
+    imeComposition = 0;
+}
+
+static HWND getDefaultIMEWnd(HWND wnd)
+{
+    HWND ime_wnd;
+    if(aimm)
+        aimm->GetDefaultIMEWnd(wnd, &ime_wnd);
+    else
+        ime_wnd = ImmGetDefaultIMEWnd(wnd);
+    return ime_wnd;
+}
+
+static HIMC getContext(HWND wnd)
+{
+    HIMC imc;
+    if (aimm)
+        aimm->GetContext(wnd, &imc);
+    else
+        imc = ImmGetContext(wnd);
+
+    return imc;
+}
+
+static void releaseContext(HWND wnd, HIMC imc)
+{
+    if (aimm)
+        aimm->ReleaseContext(wnd, imc);
+    else
+        ImmReleaseContext(wnd, imc);
+}
+
+static void notifyIME(HIMC imc, DWORD dwAction, DWORD dwIndex, DWORD dwValue)
+{
+    if (!imc)
+        return;
+    if (aimm)
+        aimm->NotifyIME(imc, dwAction, dwIndex, dwValue);
+    else
+        ImmNotifyIME(imc, dwAction, dwIndex, dwValue);
+}
+
+static LONG getCompositionString(HIMC himc, DWORD dwIndex, LPVOID lpbuf, DWORD dBufLen, bool *unicode = 0)
+{
+    LONG len = 0;
+    if (unicode)
+        *unicode = true;
+    if (aimm)
+        aimm->GetCompositionStringW(himc, dwIndex, dBufLen, &len, lpbuf);
+    else
+    {
+        if(QSysInfo::WindowsVersion != QSysInfo::WV_95) {
+            len = ImmGetCompositionStringW(himc, dwIndex, lpbuf, dBufLen);
+        }
+#if !defined(Q_OS_WINCE)
+        else {
+            len = ImmGetCompositionStringA(himc, dwIndex, lpbuf, dBufLen);
+            if (unicode)
+                *unicode = false;
+        }
+#endif
+    }
+    return len;
+}
+
+static int getCursorPosition(HIMC himc)
+{
+    return getCompositionString(himc, GCS_CURSORPOS, 0, 0);
+}
+
+static QString getString(HIMC himc, DWORD dwindex, int *selStart = 0, int *selLength = 0)
+{
+    static char *buffer = 0;
+    static int buflen = 0;
+
+    int len = getCompositionString(himc, dwindex, 0, 0) + 1;
+    if (!buffer || len > buflen) {
+        delete [] buffer;
+        buflen = qMin(len, 256);
+        buffer = new char[buflen];
+    }
+
+    bool unicode = true;
+    len = getCompositionString(himc, dwindex, buffer, buflen, &unicode);
+
+    if (selStart) {
+        static char *attrbuffer = 0;
+        static int attrbuflen = 0;
+        int attrlen = getCompositionString(himc, dwindex, 0, 0) + 1;
+        if (!attrbuffer || attrlen> attrbuflen) {
+            delete [] attrbuffer;
+            attrbuflen = qMin(attrlen, 256);
+            attrbuffer = new char[attrbuflen];
+        }
+        attrlen = getCompositionString(himc, GCS_COMPATTR, attrbuffer, attrbuflen);
+        *selStart = attrlen+1;
+        *selLength = -1;
+        for (int i = 0; i < attrlen; i++) {
+            if (attrbuffer[i] & ATTR_TARGET_CONVERTED) {
+                *selStart = qMin(*selStart, i);
+                *selLength = qMax(*selLength, i);
+            }
+        }
+        *selLength = qMax(0, *selLength - *selStart + 1);
+    }
+
+    if (len <= 0)
+        return QString();
+    if (unicode) {
+        return QString((QChar *)buffer, len/sizeof(QChar));
+    }
+    else {
+        buffer[len] = 0;
+        WCHAR *wc = new WCHAR[len+1];
+        int l = MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED,
+            buffer, len, wc, len+1);
+        QString res = QString((QChar *)wc, l);
+        delete [] wc;
+        return res;
+    }
+}
+
+void QWinInputContext::TranslateMessage(const MSG *msg)
+{
+    if (!aimmpump || aimmpump->OnTranslateMessage(msg) != S_OK)
+        ::TranslateMessage(msg);
+}
+
+LRESULT QWinInputContext::DefWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    LRESULT retval;
+    if (!aimm || aimm->OnDefWindowProc(hwnd, msg, wParam, lParam, &retval) != S_OK)
+    {
+        QT_WA({
+            retval = ::DefWindowProc(hwnd, msg, wParam, lParam);
+        } , {
+            retval = ::DefWindowProcA(hwnd,msg, wParam, lParam);
+        });
+    }
+    return retval;
+}
+
+
+void QWinInputContext::update()
+{
+    QWidget *w = focusWidget();
+    if(!w)
+        return;
+
+    Q_ASSERT(w->testAttribute(Qt::WA_WState_Created));
+    HIMC imc = getContext(w->effectiveWinId());
+
+    if (!imc)
+        return;
+
+    QFont f = qvariant_cast<QFont>(w->inputMethodQuery(Qt::ImFont));
+    HFONT hf;
+    hf = f.handle();
+
+    QT_WA({
+        LOGFONT lf;
+        if (GetObject(hf, sizeof(lf), &lf))
+            if (aimm)
+                aimm->SetCompositionFontW(imc, &lf);
+            else
+                ImmSetCompositionFont(imc, &lf);
+    } , {
+        LOGFONTA lf;
+        if (GetObjectA(hf, sizeof(lf), &lf))
+            if (aimm)
+                aimm->SetCompositionFontA(imc, &lf);
+            else
+                ImmSetCompositionFontA(imc, &lf);
+    });
+
+    QRect r = w->inputMethodQuery(Qt::ImMicroFocus).toRect();
+
+    // The ime window positions are based on the WinId with active focus.
+    QWidget *imeWnd = QWidget::find(::GetFocus());
+    if (imeWnd && !aimm) {
+        QPoint pt (r.topLeft());
+        pt = w->mapToGlobal(pt);
+        pt = imeWnd->mapFromGlobal(pt);
+        r.moveTo(pt);
+    }
+
+    COMPOSITIONFORM cf;
+    // ### need X-like inputStyle config settings
+    cf.dwStyle = CFS_FORCE_POSITION;
+    cf.ptCurrentPos.x = r.x();
+    cf.ptCurrentPos.y = r.y();
+
+    CANDIDATEFORM candf;
+    candf.dwIndex = 0;
+    candf.dwStyle = CFS_EXCLUDE;
+    candf.ptCurrentPos.x = r.x();
+    candf.ptCurrentPos.y = r.y() + r.height();
+    candf.rcArea.left = r.x();
+    candf.rcArea.top = r.y();
+    candf.rcArea.right = r.x() + r.width();
+    candf.rcArea.bottom = r.y() + r.height();
+
+    if(haveCaret)
+        SetCaretPos(r.x(), r.y());
+
+    if (aimm) {
+        aimm->SetCompositionWindow(imc, &cf);
+        aimm->SetCandidateWindow(imc, &candf);
+    } else {
+        ImmSetCompositionWindow(imc, &cf);
+        ImmSetCandidateWindow(imc, &candf);
+    }
+
+    releaseContext(w->effectiveWinId(), imc);
+}
+
+
+bool QWinInputContext::endComposition()
+{
+    QWidget *fw = focusWidget();
+#ifdef Q_IME_DEBUG
+    qDebug("endComposition! fw = %s", fw ? fw->className() : "(null)");
+#endif
+    bool result = true;
+    if(imePosition == -1 || recursionGuard)
+        return result;
+
+    // Googles Pinyin Input Method likes to call endComposition again
+    // when we call notifyIME with CPS_CANCEL, so protect ourselves
+    // against that.
+    recursionGuard = true;
+
+    if (fw) {
+        Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
+        HIMC imc = getContext(fw->effectiveWinId());
+        notifyIME(imc, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
+        releaseContext(fw->effectiveWinId(), imc);
+        if(haveCaret) {
+            DestroyCaret();
+            haveCaret = false;
+        }
+    }
+
+    if (!fw)
+        fw = qApp->focusWidget();
+
+    if (fw) {
+        QInputMethodEvent e;
+        result = qt_sendSpontaneousEvent(fw, &e);
+    }
+
+    if (imeComposition)
+        imeComposition->clear();
+    imePosition = -1;
+
+    recursionGuard = false;
+
+    return result;
+}
+
+void QWinInputContext::reset()
+{
+    QWidget *fw = focusWidget();
+
+#ifdef Q_IME_DEBUG
+    qDebug("sending accept to focus widget %s", fw ? fw->className() : "(null)");
+#endif
+
+    if (fw && imePosition != -1) {
+        QInputMethodEvent e;
+        if (imeComposition)
+            e.setCommitString(*imeComposition);
+         imePosition = -1;
+         qt_sendSpontaneousEvent(fw, &e);
+    }
+
+    if (imeComposition)
+        imeComposition->clear();
+    imePosition = -1;
+
+    if (fw) {
+        Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
+        HIMC imc = getContext(fw->effectiveWinId());
+        notifyIME(imc, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
+        releaseContext(fw->effectiveWinId(), imc);
+    }
+
+}
+
+
+bool QWinInputContext::startComposition()
+{
+#ifdef Q_IME_DEBUG
+    qDebug("startComposition");
+#endif
+
+    if (!imeComposition)
+        imeComposition = new QString();
+
+    QWidget *fw = focusWidget();
+    if (fw) {
+        Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
+        imePosition = 0;
+        haveCaret = CreateCaret(fw->effectiveWinId(), 0, 1, 1);
+        HideCaret(fw->effectiveWinId());
+        update();
+    }
+    return fw != 0;
+}
+
+enum StandardFormat {
+    PreeditFormat,
+    SelectionFormat
+};
+
+bool QWinInputContext::composition(LPARAM lParam)
+{
+#ifdef Q_IME_DEBUG
+    QString str;
+    if (lParam & GCS_RESULTSTR)
+        str += "RESULTSTR ";
+    if (lParam & GCS_COMPSTR)
+        str += "COMPSTR ";
+    if (lParam & GCS_COMPATTR)
+        str += "COMPATTR ";
+    if (lParam & GCS_CURSORPOS)
+        str += "CURSORPOS ";
+    if (lParam & GCS_COMPCLAUSE)
+        str += "COMPCLAUSE ";
+    if (lParam & CS_INSERTCHAR)
+       str += "INSERTCHAR ";
+    if (lParam & CS_NOMOVECARET)
+       str += "NOMOVECARET ";
+    qDebug("composition, lParam=(%x) %s imePosition=%d", lParam, str.latin1(), imePosition);
+#endif
+
+    bool result = true;
+
+    if(!lParam)
+        // bogus event
+        return true;
+
+    QWidget *fw = qApp->focusWidget();
+    if (fw) {
+        Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
+        HIMC imc = getContext(fw->effectiveWinId());
+        QInputMethodEvent e;
+        if (lParam & (GCS_COMPSTR | GCS_COMPATTR | GCS_CURSORPOS)) {
+            if (imePosition == -1)
+                // need to send a start event
+                startComposition();
+
+            // some intermediate composition result
+            int selStart, selLength;
+            *imeComposition = getString(imc, GCS_COMPSTR, &selStart, &selLength);
+            imePosition = getCursorPosition(imc);
+            if (lParam & CS_INSERTCHAR  && lParam & CS_NOMOVECARET) {
+                // make korean work correctly. Hope this is correct for all IMEs
+                selStart = 0;
+                selLength = imeComposition->length();
+            }
+    	    if(selLength == 0)
+                selStart = 0;
+
+           QList<QInputMethodEvent::Attribute> attrs;
+           if (selStart > 0)
+               attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, 0, selStart,
+                                            standardFormat(PreeditFormat));
+           if (selLength)
+               attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, selStart, selLength,
+                                            standardFormat(SelectionFormat));
+           if (selStart + selLength < imeComposition->length())
+               attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, selStart + selLength,
+                                            imeComposition->length() - selStart - selLength,
+                                            standardFormat(PreeditFormat));
+           if(imePosition >= 0)
+               attrs << QInputMethodEvent::Attribute(QInputMethodEvent::Cursor, imePosition, selLength ? 0 : 1, QVariant());
+
+           e = QInputMethodEvent(*imeComposition, attrs);
+        }
+        if (lParam & GCS_RESULTSTR) {
+            if(imePosition == -1)
+                startComposition();
+            // a fixed result, return the converted string
+            *imeComposition = getString(imc, GCS_RESULTSTR);
+            imePosition = -1;
+            e.setCommitString(*imeComposition);
+            imeComposition->clear();
+        }
+        result = qt_sendSpontaneousEvent(fw, &e);
+        update();
+        releaseContext(fw->effectiveWinId(), imc);
+    }
+#ifdef Q_IME_DEBUG
+    qDebug("imecomposition: cursor pos at %d, str=%x", imePosition, str[0].unicode());
+#endif
+    return result;
+}
+
+static HIMC defaultContext = 0;
+
+// checks whether widget is a popup
+inline bool isPopup(QWidget *w)
+{
+    if (w && (w->windowFlags() & Qt::Popup) == Qt::Popup)
+        return true;
+    else 
+        return false;
+}
+// checks whether widget is in a popup
+inline bool isInPopup(QWidget *w)
+{
+    if (w && (isPopup(w) ||  isPopup(w->window())))
+        return true;
+    else 
+        return false;
+}
+
+// find the parent widget, which is a non popup toplevel
+// this is valid only if the widget is/in a popup
+inline QWidget *findParentforPopup(QWidget *w)
+{
+    QWidget *e = QWidget::find(w->effectiveWinId());
+    // check if this or its parent is a popup
+    while (isInPopup(e)) {
+        e = e->window()->parentWidget();
+        if (!e) 
+            break;
+        e = QWidget::find(e->effectiveWinId());
+    }
+    if (e)
+        return e->window();
+    else
+        return 0;
+}
+
+// enables or disables the ime 
+inline void enableIme(QWidget *w,  bool value) 
+{
+    if (value) {
+        // enable ime
+        if (defaultContext)
+            ImmAssociateContext(w->effectiveWinId(), defaultContext);
+#ifdef Q_OS_WINCE
+        if (qApp->autoSipEnabled())
+            qt_wince_show_SIP(true);
+#endif
+    } else {
+        // disable ime
+        HIMC oldimc = ImmAssociateContext(w->effectiveWinId(), 0);
+        if (!defaultContext)
+            defaultContext = oldimc;
+#ifdef Q_OS_WINCE
+        if (qApp->autoSipEnabled())
+            qt_wince_show_SIP(false);
+#endif
+    }
+}
+
+
+void QInputContextPrivate::updateImeStatus(QWidget *w, bool hasFocus)
+{
+    if (!w)
+        return;
+    bool e = w->testAttribute(Qt::WA_InputMethodEnabled) && w->isEnabled();
+    bool hasIme = e && hasFocus;
+#ifdef Q_IME_DEBUG
+    qDebug("%s HasFocus = %d hasIme = %d e = %d ", w->className(), hasFocus, hasIme, e);
+#endif
+    if (hasFocus || e) {
+        if (isInPopup(w))
+            QWinInputContext::enablePopupChild(w, hasIme);
+        else
+            QWinInputContext::enable(w, hasIme);
+    }
+}
+
+void QWinInputContext::enablePopupChild(QWidget *w, bool e)
+{
+    if (aimm) {
+        enable(w, e);
+        return;
+    }
+
+    if (!w || !isInPopup(w))
+        return;
+#ifdef Q_IME_DEBUG
+    qDebug("enablePopupChild: w=%s, enable = %s", w ? w->className() : "(null)" , e ? "true" : "false");
+#endif
+    QWidget *parent = findParentforPopup(w);
+    if (parent) {
+        // update ime status of the normal toplevel parent of the popup
+        enableIme(parent, e);
+    }
+    QWidget *toplevel = w->window();
+    if (toplevel) {
+        // update ime status of the toplevel popup
+        enableIme(toplevel, e);
+    }
+}
+
+void QWinInputContext::enable(QWidget *w, bool e)
+{
+    if(w) {
+#ifdef Q_IME_DEBUG
+        qDebug("enable: w=%s, enable = %s", w ? w->className() : "(null)" , e ? "true" : "false");
+#endif
+        if (!w->testAttribute(Qt::WA_WState_Created))
+            return;
+        if(aimm) {
+            HIMC oldimc;
+            if (!e) {
+                aimm->AssociateContext(w->effectiveWinId(), 0, &oldimc);
+                if (!defaultContext)
+                    defaultContext = oldimc;
+            } else if (defaultContext) {
+                aimm->AssociateContext(w->effectiveWinId(), defaultContext, &oldimc);
+            }
+        } else {
+            // update ime status on the widget
+            QWidget *p = QWidget::find(w->effectiveWinId());
+            if (p)
+                enableIme(p, e);
+        }
+    }
+}
+
+void QWinInputContext::setFocusWidget(QWidget *w)
+{
+    QInputContext::setFocusWidget(w);
+    update();
+}
+
+bool QWinInputContext::isComposing() const
+{
+    return imeComposition && !imeComposition->isEmpty();
+}
+
+void QWinInputContext::mouseHandler(int pos, QMouseEvent *e)
+{
+    if(e->type() != QEvent::MouseButtonPress)
+        return;
+
+    if (pos < 0 || pos > imeComposition->length())
+        reset();
+
+    // Probably should pass the correct button, but it seems to work fine like this.
+    DWORD button = MK_LBUTTON;
+
+    QWidget *fw = focusWidget();
+    if (fw) {
+        Q_ASSERT(fw->testAttribute(Qt::WA_WState_Created));
+        HIMC himc = getContext(fw->effectiveWinId());
+        HWND ime_wnd = getDefaultIMEWnd(fw->effectiveWinId());
+        SendMessage(ime_wnd, WM_MSIME_MOUSE, MAKELONG(MAKEWORD(button, pos == 0 ? 2 : 1), pos), (LPARAM)himc);
+        releaseContext(fw->effectiveWinId(), himc);
+    }
+    //qDebug("mouseHandler: got value %d pos=%d", ret,pos);
+}
+
+QString QWinInputContext::language()
+{
+    return QString();
+}
+
+QT_END_NAMESPACE
diff --git a/src/gui/inputmethod/qwsinputcontext_p.h b/src/gui/inputmethod/qwsinputcontext_p.h
new file mode 100644
index 0000000..20811da
--- /dev/null
+++ b/src/gui/inputmethod/qwsinputcontext_p.h
@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWSINPUTCONTEXT_P_H
+#define QWSINPUTCONTEXT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtGui/qinputcontext.h"
+
+#ifndef QT_NO_QWS_INPUTMETHODS
+
+QT_BEGIN_NAMESPACE
+
+class QWSIMEvent;
+class QWSIMQueryEvent;
+class QWSIMInitEvent;
+
+class QWSInputContext : public QInputContext
+{
+    Q_OBJECT
+public:
+    explicit QWSInputContext(QObject* parent = 0);
+    ~QWSInputContext() {}
+
+
+    QString identifierName() { return QString(); }
+    QString language() { return QString(); }
+
+    void reset();
+    void update();
+    void mouseHandler( int x, QMouseEvent *event);
+
+    void setFocusWidget( QWidget *w );
+    void widgetDestroyed(QWidget *w);
+
+    bool isComposing() const;
+
+    static QWidget *activeWidget();
+    static bool translateIMEvent(QWidget *w, const QWSIMEvent *e);
+    static bool translateIMQueryEvent(QWidget *w, const QWSIMQueryEvent *e);
+    static bool translateIMInitEvent(const QWSIMInitEvent *e);
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_QWS_INPUTMETHODS
+
+#endif // QWSINPUTCONTEXT_P_H
diff --git a/src/gui/inputmethod/qwsinputcontext_qws.cpp b/src/gui/inputmethod/qwsinputcontext_qws.cpp
new file mode 100644
index 0000000..46ac13d
--- /dev/null
+++ b/src/gui/inputmethod/qwsinputcontext_qws.cpp
@@ -0,0 +1,239 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwsinputcontext_p.h"
+#include "qinputcontext_p.h"
+#include "qwsdisplay_qws.h"
+#include "qwsevent_qws.h"
+#include "private/qwscommand_qws_p.h"
+#include "qwindowsystem_qws.h"
+#include "qevent.h"
+#include "qtextformat.h"
+
+#include <qbuffer.h>
+
+#include <qdebug.h>
+
+#ifndef QT_NO_QWS_INPUTMETHODS
+
+QT_BEGIN_NAMESPACE
+
+static QWidget* activeWidget = 0;
+
+//#define EXTRA_DEBUG
+
+QWSInputContext::QWSInputContext(QObject *parent)
+    :QInputContext(parent)
+{
+}
+
+void QWSInputContext::reset()
+{
+    QPaintDevice::qwsDisplay()->resetIM();
+}
+
+
+void QWSInputContext::setFocusWidget( QWidget *w )
+{
+  QWidget *oldFocus = focusWidget();
+    if (oldFocus == w)
+        return;
+
+    if (oldFocus) {
+        QWidget *tlw = oldFocus->window();
+        int winid = tlw->internalWinId();
+
+        int widgetid = oldFocus->internalWinId();
+        QPaintDevice::qwsDisplay()->sendIMUpdate(QWSInputMethod::FocusOut, winid, widgetid);
+    }
+
+    QInputContext::setFocusWidget(w);
+
+    if (!w)
+        return;
+
+    QWidget *tlw = w->window();
+    int winid = tlw->winId();
+
+    int widgetid = w->winId();
+    QPaintDevice::qwsDisplay()->sendIMUpdate(QWSInputMethod::FocusIn, winid, widgetid);
+
+    //setfocus ???
+
+    update();
+}
+
+
+void QWSInputContext::widgetDestroyed(QWidget *w)
+{
+    if (w == ::activeWidget)
+        ::activeWidget = 0;
+    QInputContext::widgetDestroyed(w);
+}
+
+void QWSInputContext::update()
+{
+    QWidget *w = focusWidget();
+    if (!w)
+        return;
+
+    QWidget *tlw = w->window();
+    int winid = tlw->winId();
+
+    int widgetid = w->winId();
+    QPaintDevice::qwsDisplay()->sendIMUpdate(QWSInputMethod::Update, winid, widgetid);
+
+}
+
+void QWSInputContext::mouseHandler( int x, QMouseEvent *event)
+{
+    if (event->type() == QEvent::MouseButtonPress || event->type() == QEvent::MouseButtonRelease)
+        QPaintDevice::qwsDisplay()->sendIMMouseEvent( x, event->type() == QEvent::MouseButtonPress );
+}
+
+QWidget *QWSInputContext::activeWidget()
+{
+    return ::activeWidget;
+}
+
+
+bool QWSInputContext::isComposing() const
+{
+    return ::activeWidget != 0;
+}
+
+bool QWSInputContext::translateIMQueryEvent(QWidget *w, const QWSIMQueryEvent *e)
+{
+    Qt::InputMethodQuery type = static_cast<Qt::InputMethodQuery>(e->simpleData.property);
+    QVariant result = w->inputMethodQuery(type);
+    QWidget *tlw = w->window();
+    int winId = tlw->winId();
+
+    if ( type == Qt::ImMicroFocus ) {
+        // translate to relative to tlw
+        QRect mf = result.toRect();
+        mf.moveTopLeft(w->mapTo(tlw,mf.topLeft()));
+        result = mf;
+    }
+
+    QPaintDevice::qwsDisplay()->sendIMResponse(winId, e->simpleData.property, result);
+
+    return false;
+}
+
+bool QWSInputContext::translateIMInitEvent(const QWSIMInitEvent *e)
+{
+    Q_UNUSED(e);
+    qDebug("### QWSInputContext::translateIMInitEvent not implemented ###");
+    return false;
+}
+
+bool QWSInputContext::translateIMEvent(QWidget *w, const QWSIMEvent *e)
+{
+    QDataStream stream(e->streamingData);
+    QString preedit;
+    QString commit;
+
+    stream >> preedit;
+    stream >> commit;
+
+    if (preedit.isEmpty() && ::activeWidget)
+        w = ::activeWidget;
+
+    QInputContext *qic = w->inputContext();
+    if (!qic)
+        return false;
+
+    QList<QInputMethodEvent::Attribute> attrs;
+
+
+    while (!stream.atEnd()) {
+        int type = -1;
+        int start = -1;
+        int length = -1;
+        QVariant data;
+        stream >> type >> start >> length >> data;
+        if (stream.status() != QDataStream::Ok) {
+            qWarning("corrupted QWSIMEvent");
+            //qic->reset(); //???
+            return false;
+        }
+        if (type == QInputMethodEvent::TextFormat)
+            data = qic->standardFormat(static_cast<QInputContext::StandardFormat>(data.toInt()));
+        attrs << QInputMethodEvent::Attribute(static_cast<QInputMethodEvent::AttributeType>(type), start, length, data);
+    }
+#ifdef EXTRA_DEBUG
+    qDebug() << "preedit" << preedit << "len" << preedit.length() <<"commit" << commit << "len" << commit.length()
+             << "n attr" << attrs.count();
+#endif
+
+    if (preedit.isEmpty())
+        ::activeWidget = 0;
+    else
+        ::activeWidget = w;
+
+
+    QInputMethodEvent ime(preedit, attrs);
+    if (!commit.isEmpty() || e->simpleData.replaceLength > 0)
+        ime.setCommitString(commit, e->simpleData.replaceFrom, e->simpleData.replaceLength);
+
+
+    extern bool qt_sendSpontaneousEvent(QObject *, QEvent *); //qapplication_qws.cpp
+    qt_sendSpontaneousEvent(w, &ime);
+
+    return true;
+}
+
+Q_GUI_EXPORT void (*qt_qws_inputMethodStatusChanged)(QWidget*) = 0;
+
+void QInputContextPrivate::updateImeStatus(QWidget *w, bool hasFocus)
+{
+    Q_UNUSED(hasFocus);
+
+    if (!w || !qt_qws_inputMethodStatusChanged)
+        return;
+    qt_qws_inputMethodStatusChanged(w);
+}
+
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_QWS_INPUTMETHODS
diff --git a/src/gui/inputmethod/qximinputcontext_p.h b/src/gui/inputmethod/qximinputcontext_p.h
new file mode 100644
index 0000000..ca2103b
--- /dev/null
+++ b/src/gui/inputmethod/qximinputcontext_p.h
@@ -0,0 +1,141 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Definition of QXIMInputContext class
+**
+** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+**
+** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+** license. You may use this file under your Qt license. Following
+** description is copied from their original file headers. Contact
+** immodule-qt@freedesktop.org if any conditions of this licensing are
+** not clear to you.
+**
+****************************************************************************/
+
+#ifndef QXIMINPUTCONTEXT_P_H
+#define QXIMINPUTCONTEXT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#if !defined(Q_NO_IM)
+
+#include "QtCore/qglobal.h"
+#include "QtGui/qinputcontext.h"
+#include "QtGui/qfont.h"
+#include "QtCore/qhash.h"
+#ifdef Q_WS_X11
+#include "QtCore/qlist.h"
+#include "QtCore/qbitarray.h"
+#include "QtGui/qwindowdefs.h"
+#include "private/qt_x11_p.h"
+#endif
+
+QT_BEGIN_NAMESPACE
+
+class QKeyEvent;
+class QWidget;
+class QFont;
+class QString;
+
+class QXIMInputContext : public QInputContext
+{
+    Q_OBJECT
+public:
+    struct ICData {
+        XIC ic;
+        XFontSet fontset;
+        QWidget *widget;
+        QString text;
+        QBitArray selectedChars;
+        bool composing;
+        void clear();
+    };
+
+    QXIMInputContext();
+    ~QXIMInputContext();
+
+    QString identifierName();
+    QString language();
+
+    void reset();
+
+    void mouseHandler( int x, QMouseEvent *event);
+    bool isComposing() const;
+
+    void setFocusWidget( QWidget *w );
+    void widgetDestroyed(QWidget *w);
+
+    void create_xim();
+    void close_xim();
+
+    void update();
+
+    ICData *icData() const;
+protected:
+    bool x11FilterEvent( QWidget *keywidget, XEvent *event );
+
+private:
+    static XIMStyle xim_style;
+
+    QString _language;
+    XIM xim;
+    QHash<WId, ICData *> ximData;
+
+    ICData *createICData(QWidget *w);
+};
+
+QT_END_NAMESPACE
+
+#endif // Q_NO_IM
+
+#endif // QXIMINPUTCONTEXT_P_H
diff --git a/src/gui/inputmethod/qximinputcontext_x11.cpp b/src/gui/inputmethod/qximinputcontext_x11.cpp
new file mode 100644
index 0000000..48a96b1
--- /dev/null
+++ b/src/gui/inputmethod/qximinputcontext_x11.cpp
@@ -0,0 +1,832 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Implementation of QXIMInputContext class
+**
+** Copyright (C) 2003-2004 immodule for Qt Project.  All rights reserved.
+**
+** This file is written to contribute to Nokia Corporation and/or its subsidiary(-ies) under their own
+** license. You may use this file under your Qt license. Following
+** description is copied from their original file headers. Contact
+** immodule-qt@freedesktop.org if any conditions of this licensing are
+** not clear to you.
+**
+****************************************************************************/
+
+#include "qdebug.h"
+#include "qximinputcontext_p.h"
+
+#if !defined(QT_NO_IM)
+
+QT_BEGIN_NAMESPACE
+
+#if !defined(QT_NO_XIM)
+
+QT_BEGIN_INCLUDE_NAMESPACE
+#include "qplatformdefs.h"
+
+#include "qapplication.h"
+#include "qwidget.h"
+#include "qstring.h"
+#include "qlist.h"
+#include "qtextcodec.h"
+#include "qevent.h"
+#include "qtextformat.h"
+
+#include "qx11info_x11.h"
+
+#include <stdlib.h>
+#include <limits.h>
+QT_END_INCLUDE_NAMESPACE
+
+// #define QT_XIM_DEBUG
+#ifdef QT_XIM_DEBUG
+#define XIM_DEBUG qDebug
+#else
+#define XIM_DEBUG if (0) qDebug
+#endif
+
+// from qapplication_x11.cpp
+// #### move to X11 struct
+extern XIMStyle	qt_xim_preferred_style;
+extern char    *qt_ximServer;
+extern int qt_ximComposingKeycode;
+extern QTextCodec * qt_input_mapper;
+
+XIMStyle QXIMInputContext::xim_style = 0;
+// moved from qapplication_x11.cpp
+static const XIMStyle xim_default_style = XIMPreeditCallbacks | XIMStatusNothing;
+
+
+extern "C" {
+#ifdef USE_X11R6_XIM
+    static void xim_create_callback(XIM /*im*/,
+                                    XPointer client_data,
+                                    XPointer /*call_data*/)
+    {
+        QXIMInputContext *qic = reinterpret_cast<QXIMInputContext *>(client_data);
+        // qDebug("xim_create_callback");
+        qic->create_xim();
+    }
+
+    static void xim_destroy_callback(XIM /*im*/,
+                                     XPointer client_data,
+                                     XPointer /*call_data*/)
+    {
+        QXIMInputContext *qic = reinterpret_cast<QXIMInputContext *>(client_data);
+        // qDebug("xim_destroy_callback");
+        qic->close_xim();
+        XRegisterIMInstantiateCallback(X11->display, 0, 0, 0,
+                                       (XIMProc) xim_create_callback, reinterpret_cast<char *>(qic));
+    }
+#endif // USE_X11R6_XIM
+
+    static int xic_start_callback(XIC, XPointer client_data, XPointer) {
+	QXIMInputContext *qic = (QXIMInputContext *) client_data;
+	if (!qic) {
+	    XIM_DEBUG("xic_start_callback: no qic");
+	    return 0;
+	}
+        QXIMInputContext::ICData *data = qic->icData();
+        if (!data) {
+            XIM_DEBUG("xic_start_callback: no ic data");
+            return 0;
+        }
+	XIM_DEBUG("xic_start_callback");
+
+	data->clear();
+        data->composing = true;
+
+	return 0;
+    }
+
+    static int xic_draw_callback(XIC, XPointer client_data, XPointer call_data) {
+	QXIMInputContext *qic = (QXIMInputContext *) client_data;
+	if (!qic) {
+	    XIM_DEBUG("xic_draw_callback: no qic");
+	    return 0;
+	}
+        QXIMInputContext::ICData *data = qic->icData();
+	if (!data) {
+	    XIM_DEBUG("xic_draw_callback: no ic data");
+	    return 0;
+	}
+        XIM_DEBUG("xic_draw_callback");
+
+
+	if(!data->composing) {
+	    data->clear();
+            data->composing = true;
+        }
+
+	XIMPreeditDrawCallbackStruct *drawstruct = (XIMPreeditDrawCallbackStruct *) call_data;
+	XIMText *text = (XIMText *) drawstruct->text;
+	int cursor = drawstruct->caret, sellen = 0, selstart = 0;
+
+	if (!drawstruct->caret && !drawstruct->chg_first && !drawstruct->chg_length && !text) {
+	    if(data->text.isEmpty()) {
+		XIM_DEBUG("compose emptied");
+		// if the composition string has been emptied, we need
+		// to send an InputMethodEnd event
+                QInputMethodEvent e;
+		qic->sendEvent(e);
+		data->clear();
+
+		// if the commit string has coming after here, InputMethodStart
+		// will be sent dynamically
+	    }
+	    return 0;
+	}
+
+	if (text) {
+	    char *str = 0;
+	    if (text->encoding_is_wchar) {
+		int l = wcstombs(NULL, text->string.wide_char, text->length);
+		if (l != -1) {
+		    str = new char[l + 1];
+		    wcstombs(str, text->string.wide_char, l);
+		    str[l] = 0;
+		}
+	    } else
+		str = text->string.multi_byte;
+
+	    if (!str)
+		return 0;
+
+	    QString s = QString::fromLocal8Bit(str);
+
+	    if (text->encoding_is_wchar)
+		delete [] str;
+
+	    if (drawstruct->chg_length < 0)
+		data->text.replace(drawstruct->chg_first, INT_MAX, s);
+	    else
+		data->text.replace(drawstruct->chg_first, drawstruct->chg_length, s);
+
+	    if (data->selectedChars.size() < data->text.length()) {
+		// expand the selectedChars array if the compose string is longer
+		int from = data->selectedChars.size();
+		data->selectedChars.resize(data->text.length());
+                for (int x = from; x < data->selectedChars.size(); ++x)
+                    data->selectedChars.clearBit(x);
+	    }
+
+            // determine if the changed chars are selected based on text->feedback
+            for (int x = 0; x < text->length; ++x)
+                data->selectedChars.setBit(x + drawstruct->chg_first,
+                                           (text->feedback ? (text->feedback[x] & XIMReverse) : 0));
+
+            // figure out where the selection starts, and how long it is
+            bool started = false;
+            for (int x = 0; x < qMin(data->selectedChars.size(), data->text.length()); ++x) {
+                if (started) {
+                    if (data->selectedChars.testBit(x)) ++sellen;
+                    else break;
+                } else {
+                    if (data->selectedChars.testBit(x)) {
+                        selstart = x;
+                        started = true;
+                        sellen = 1;
+                    }
+                }
+            }
+	} else {
+	    if (drawstruct->chg_length == 0)
+		drawstruct->chg_length = -1;
+
+	    data->text.remove(drawstruct->chg_first, drawstruct->chg_length);
+	    bool qt_compose_emptied = data->text.isEmpty();
+	    if (qt_compose_emptied) {
+		XIM_DEBUG("compose emptied 2 text=%s", data->text.toUtf8().constData());
+		// if the composition string has been emptied, we need
+		// to send an InputMethodEnd event
+                QInputMethodEvent e;
+		qic->sendEvent(e);
+		data->clear();
+		// if the commit string has coming after here, InputMethodStart
+		// will be sent dynamically
+		return 0;
+	    }
+	}
+
+        XIM_DEBUG("sending compose: '%s', cursor=%d, sellen=%d",
+                  data->text.toUtf8().constData(), cursor, sellen);
+        QList<QInputMethodEvent::Attribute> attrs;
+        if (selstart > 0)
+            attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, 0, selstart,
+                                                  qic->standardFormat(QInputContext::PreeditFormat));
+        if (sellen)
+            attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, selstart, sellen,
+                                                  qic->standardFormat(QInputContext::SelectionFormat));
+        if (selstart + sellen < data->text.length())
+            attrs << QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat,
+                                                  selstart + sellen, data->text.length() - selstart - sellen,
+                                                  qic->standardFormat(QInputContext::PreeditFormat));
+        attrs << QInputMethodEvent::Attribute(QInputMethodEvent::Cursor, cursor, sellen ? 0 : 1, QVariant());
+        QInputMethodEvent e(data->text, attrs);
+	qic->sendEvent(e);
+
+	return 0;
+    }
+
+    static int xic_done_callback(XIC, XPointer client_data, XPointer) {
+	QXIMInputContext *qic = (QXIMInputContext *) client_data;
+	if (!qic)
+	    return 0;
+
+        XIM_DEBUG("xic_done_callback");
+	// Don't send InputMethodEnd here. QXIMInputContext::x11FilterEvent()
+	// handles InputMethodEnd with commit string.
+	return 0;
+    }
+}
+
+void QXIMInputContext::ICData::clear()
+{
+    text = QString();
+    selectedChars.clear();
+    composing = false;
+}
+
+QXIMInputContext::ICData *QXIMInputContext::icData() const
+{
+    if (QWidget *w = focusWidget())
+        return ximData.value(w->effectiveWinId());
+    return 0;
+}
+/* The cache here is needed, as X11 leaks a few kb for every
+   XFreeFontSet call, so we avoid creating and deletion of fontsets as
+   much as possible
+*/
+static XFontSet fontsetCache[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+static int fontsetRefCount = 0;
+
+static const char * const fontsetnames[] = {
+    "-*-fixed-medium-r-*-*-16-*,-*-*-medium-r-*-*-16-*",
+    "-*-fixed-medium-i-*-*-16-*,-*-*-medium-i-*-*-16-*",
+    "-*-fixed-bold-r-*-*-16-*,-*-*-bold-r-*-*-16-*",
+    "-*-fixed-bold-i-*-*-16-*,-*-*-bold-i-*-*-16-*",
+    "-*-fixed-medium-r-*-*-24-*,-*-*-medium-r-*-*-24-*",
+    "-*-fixed-medium-i-*-*-24-*,-*-*-medium-i-*-*-24-*",
+    "-*-fixed-bold-r-*-*-24-*,-*-*-bold-r-*-*-24-*",
+    "-*-fixed-bold-i-*-*-24-*,-*-*-bold-i-*-*-24-*"
+};
+
+static XFontSet getFontSet(const QFont &f)
+{
+    int i = 0;
+    if (f.italic())
+        i |= 1;
+    if (f.bold())
+        i |= 2;
+
+    if (f.pointSize() > 20)
+        i += 4;
+
+    if (!fontsetCache[i]) {
+        Display* dpy = X11->display;
+        int missCount;
+        char** missList;
+        fontsetCache[i] = XCreateFontSet(dpy, fontsetnames[i], &missList, &missCount, 0);
+        if(missCount > 0)
+            XFreeStringList(missList);
+        if (!fontsetCache[i]) {
+            fontsetCache[i] = XCreateFontSet(dpy, "-*-fixed-*-*-*-*-16-*", &missList, &missCount, 0);
+            if(missCount > 0)
+                XFreeStringList(missList);
+            if (!fontsetCache[i])
+                fontsetCache[i] = (XFontSet)-1;
+        }
+    }
+    return (fontsetCache[i] == (XFontSet)-1) ? 0 : fontsetCache[i];
+}
+
+
+
+QXIMInputContext::QXIMInputContext()
+{
+    if (!qt_xim_preferred_style) // no configured input style, use the default
+        qt_xim_preferred_style = xim_default_style;
+
+    xim = 0;
+    QByteArray ximServerName(qt_ximServer);
+    if (qt_ximServer)
+        ximServerName.prepend("@im=");
+    else
+        ximServerName = "";
+
+    if (!XSupportsLocale())
+#ifndef QT_NO_DEBUG
+        qWarning("Qt: Locale not supported on X server")
+#endif
+            ;
+#ifdef USE_X11R6_XIM
+    else if (XSetLocaleModifiers (ximServerName.constData()) == 0)
+        qWarning("Qt: Cannot set locale modifiers: %s", ximServerName.constData());
+    else
+        XRegisterIMInstantiateCallback(X11->display, 0, 0, 0,
+                                       (XIMProc) xim_create_callback, reinterpret_cast<char *>(this));
+#else // !USE_X11R6_XIM
+    else if (XSetLocaleModifiers ("") == 0)
+        qWarning("Qt: Cannot set locale modifiers");
+    else
+        QXIMInputContext::create_xim();
+#endif // USE_X11R6_XIM
+}
+
+
+/*!\internal
+  Creates the application input method.
+*/
+void QXIMInputContext::create_xim()
+{
+    ++fontsetRefCount;
+#ifndef QT_NO_XIM
+    xim = XOpenIM(X11->display, 0, 0, 0);
+    if (xim) {
+
+#ifdef USE_X11R6_XIM
+        XIMCallback destroy;
+        destroy.callback = (XIMProc) xim_destroy_callback;
+        destroy.client_data = XPointer(this);
+        if (XSetIMValues(xim, XNDestroyCallback, &destroy, (char *) 0) != 0)
+            qWarning("Xlib doesn't support destroy callback");
+#endif // USE_X11R6_XIM
+
+        XIMStyles *styles = 0;
+        XGetIMValues(xim, XNQueryInputStyle, &styles, (char *) 0, (char *) 0);
+        if (styles) {
+            int i;
+            for (i = 0; !xim_style && i < styles->count_styles; i++) {
+                if (styles->supported_styles[i] == qt_xim_preferred_style) {
+                    xim_style = qt_xim_preferred_style;
+                    break;
+                }
+            }
+            // if the preferred input style couldn't be found, look for
+            // Nothing
+            for (i = 0; !xim_style && i < styles->count_styles; i++) {
+                if (styles->supported_styles[i] == (XIMPreeditNothing | XIMStatusNothing)) {
+                    xim_style = XIMPreeditNothing | XIMStatusNothing;
+                    break;
+                }
+            }
+            // ... and failing that, None.
+            for (i = 0; !xim_style && i < styles->count_styles; i++) {
+                if (styles->supported_styles[i] == (XIMPreeditNone |
+                                                    XIMStatusNone)) {
+                    xim_style = XIMPreeditNone | XIMStatusNone;
+                    break;
+                }
+            }
+
+            // qDebug("QApplication: using im style %lx", xim_style);
+            XFree((char *)styles);
+        }
+
+        if (xim_style) {
+
+#ifdef USE_X11R6_XIM
+            XUnregisterIMInstantiateCallback(X11->display, 0, 0, 0,
+                                             (XIMProc) xim_create_callback, reinterpret_cast<char *>(this));
+#endif // USE_X11R6_XIM
+
+            if (QWidget *focusWidget = QApplication::focusWidget()) {
+                // reinitialize input context after the input method
+                // server (like SCIM) has been launched without
+                // requiring the user to manually switch focus.
+                if (focusWidget->testAttribute(Qt::WA_InputMethodEnabled))
+                    setFocusWidget(focusWidget);
+            }
+            // following code fragment is not required for immodule
+            // version of XIM
+#if 0
+            QWidgetList list = qApp->topLevelWidgets();
+            for (int i = 0; i < list.size(); ++i) {
+                QWidget *w = list.at(i);
+                w->d->createTLSysExtra();
+            }
+#endif
+        } else {
+            // Give up
+            qWarning("No supported input style found."
+                     "  See InputMethod documentation.");
+            close_xim();
+        }
+    }
+#endif // QT_NO_XIM
+}
+
+/*!\internal
+  Closes the application input method.
+*/
+void QXIMInputContext::close_xim()
+{
+    for(QHash<WId, ICData *>::const_iterator i = ximData.constBegin(),
+                                             e = ximData.constEnd(); i != e; ++i) {
+        ICData *data = i.value();
+        if (data->ic)
+            XDestroyIC(data->ic);
+        delete data;
+    }
+    ximData.clear();
+
+    if ( --fontsetRefCount == 0 ) {
+	Display *dpy = X11->display;
+	for ( int i = 0; i < 8; i++ ) {
+	    if ( fontsetCache[i] && fontsetCache[i] != (XFontSet)-1 ) {
+		XFreeFontSet(dpy, fontsetCache[i]);
+		fontsetCache[i] = 0;
+	    }
+	}
+    }
+
+    setFocusWidget(0);
+    xim = 0;
+}
+
+
+
+QXIMInputContext::~QXIMInputContext()
+{
+    XIM old_xim = xim; // close_xim clears xim pointer.
+    close_xim();
+    if (old_xim)
+        XCloseIM(old_xim);
+}
+
+
+QString QXIMInputContext::identifierName()
+{
+    // the name should be "xim" rather than "XIM" to be consistent
+    // with corresponding immodule of GTK+
+    return QLatin1String("xim");
+}
+
+
+QString QXIMInputContext::language()
+{
+    QString language;
+    if (xim) {
+        QByteArray locale(XLocaleOfIM(xim));
+
+        if (locale.startsWith("zh")) {
+            // Chinese language should be formed as "zh_CN", "zh_TW", "zh_HK"
+            language = QLatin1String(locale.left(5));
+        } else {
+            // other languages should be two-letter ISO 639 language code
+            language = QLatin1String(locale.left(2));
+        }
+    }
+    return language;
+}
+
+void QXIMInputContext::reset()
+{
+    QWidget *w = focusWidget();
+    if (!w)
+        return;
+
+    ICData *data = ximData.value(w->effectiveWinId());
+    if (!data)
+        return;
+
+    if (data->ic) {
+        char *mb = XmbResetIC(data->ic);
+        QInputMethodEvent e;
+        if (mb) {
+            e.setCommitString(QString::fromLocal8Bit(mb));
+            XFree(mb);
+        }
+        sendEvent(e);
+        update();
+    }
+    data->clear();
+}
+
+void QXIMInputContext::widgetDestroyed(QWidget *w)
+{
+    QInputContext::widgetDestroyed(w);
+    ICData *data = ximData.take(w->effectiveWinId());
+    if (!data)
+        return;
+
+    data->clear();
+    if (data->ic)
+        XDestroyIC(data->ic);
+    delete data;
+}
+
+void QXIMInputContext::mouseHandler(int pos, QMouseEvent *e)
+{
+    if(e->type() != QEvent::MouseButtonPress)
+        return;
+
+    XIM_DEBUG("QXIMInputContext::mouseHandler pos=%d", pos);
+    if (QWidget *w = focusWidget()) {
+        ICData *data = ximData.value(w->effectiveWinId());
+        if (!data)
+            return;
+        if (pos < 0 || pos > data->text.length())
+            reset();
+        // ##### handle mouse position
+    }
+}
+
+bool QXIMInputContext::isComposing() const
+{
+    QWidget *w = focusWidget();
+    if (!w)
+        return false;
+
+    ICData *data = ximData.value(w->effectiveWinId());
+    if (!data)
+        return false;
+    return data->composing;
+}
+
+void QXIMInputContext::setFocusWidget(QWidget *w)
+{
+    if (!xim)
+        return;
+    QWidget *oldFocus = focusWidget();
+    if (oldFocus == w)
+        return;
+
+    if (language() != QLatin1String("ja"))
+        reset();
+
+    if (oldFocus) {
+        ICData *data = ximData.value(oldFocus->effectiveWinId());
+        if (data && data->ic)
+            XUnsetICFocus(data->ic);
+    }
+
+    QInputContext::setFocusWidget(w);
+
+    if (!w)
+        return;
+
+    ICData *data = ximData.value(w->effectiveWinId());
+    if (!data)
+        data = createICData(w);
+
+    if (data->ic)
+        XSetICFocus(data->ic);
+
+    update();
+}
+
+
+bool QXIMInputContext::x11FilterEvent(QWidget *keywidget, XEvent *event)
+{
+    int xkey_keycode = event->xkey.keycode;
+    if (!keywidget->testAttribute(Qt::WA_WState_Created))
+        return false;
+    if (XFilterEvent(event, keywidget->effectiveWinId())) {
+        qt_ximComposingKeycode = xkey_keycode; // ### not documented in xlib
+
+        update();
+
+        return true;
+    }
+    if (event->type != XKeyPress || event->xkey.keycode != 0)
+        return false;
+
+    QWidget *w = focusWidget();
+    if (keywidget != w)
+        return false;
+    ICData *data = ximData.value(w->effectiveWinId());
+    if (!data)
+        return false;
+
+    // input method has sent us a commit string
+    QByteArray string;
+    string.resize(513);
+    KeySym key;    // unused
+    Status status; // unused
+    QString text;
+    int count = XmbLookupString(data->ic, &event->xkey, string.data(), string.size(),
+                                &key, &status);
+
+    if (status == XBufferOverflow) {
+        string.resize(count + 1);
+        count = XmbLookupString(data->ic, &event->xkey, string.data(), string.size(),
+                                &key, &status);
+    }
+    if (count > 0) {
+        // XmbLookupString() gave us some text, convert it to unicode
+        text = qt_input_mapper->toUnicode(string.constData() , count);
+        if (text.isEmpty()) {
+            // codec couldn't convert to unicode? this can happen when running in the
+            // C locale (or with no LANG set). try converting from latin-1
+            text = QString::fromLatin1(string.constData(), count);
+        }
+    }
+
+#if 0
+    if (!(xim_style & XIMPreeditCallbacks) || !isComposing()) {
+        // ############### send a regular key event here!
+        ;
+    }
+#endif
+
+    QInputMethodEvent e;
+    e.setCommitString(text);
+    sendEvent(e);
+    data->clear();
+
+    update();
+
+    return true;
+}
+
+
+QXIMInputContext::ICData *QXIMInputContext::createICData(QWidget *w)
+{
+    ICData *data = new ICData;
+    data->widget = w;
+
+    XVaNestedList preedit_attr = 0;
+    XIMCallback startcallback, drawcallback, donecallback;
+
+    QFont font = w->font();
+    data->fontset = getFontSet(font);
+
+    if (xim_style & XIMPreeditArea) {
+        XRectangle rect;
+        rect.x = 0;
+        rect.y = 0;
+        rect.width = w->width();
+        rect.height = w->height();
+
+        preedit_attr = XVaCreateNestedList(0,
+                                           XNArea, &rect,
+                                           XNFontSet, data->fontset,
+                                           (char *) 0);
+    } else if (xim_style & XIMPreeditPosition) {
+        XPoint spot;
+        spot.x = 1;
+        spot.y = 1;
+
+        preedit_attr = XVaCreateNestedList(0,
+                                           XNSpotLocation, &spot,
+                                           XNFontSet, data->fontset,
+                                           (char *) 0);
+    } else if (xim_style & XIMPreeditCallbacks) {
+        startcallback.client_data = (XPointer) this;
+        startcallback.callback = (XIMProc) xic_start_callback;
+        drawcallback.client_data = (XPointer) this;
+        drawcallback.callback = (XIMProc)xic_draw_callback;
+        donecallback.client_data = (XPointer) this;
+        donecallback.callback = (XIMProc) xic_done_callback;
+
+        preedit_attr = XVaCreateNestedList(0,
+                                           XNPreeditStartCallback, &startcallback,
+                                           XNPreeditDrawCallback, &drawcallback,
+                                           XNPreeditDoneCallback, &donecallback,
+                                           (char *) 0);
+    }
+
+    if (preedit_attr) {
+        data->ic = XCreateIC(xim,
+                             XNInputStyle, xim_style,
+                             XNClientWindow, w->effectiveWinId(),
+                             XNPreeditAttributes, preedit_attr,
+                             (char *) 0);
+        XFree(preedit_attr);
+    } else {
+        data->ic = XCreateIC(xim,
+                             XNInputStyle, xim_style,
+                             XNClientWindow, w->effectiveWinId(),
+                             (char *) 0);
+    }
+
+    if (data->ic) {
+        // when resetting the input context, preserve the input state
+        (void) XSetICValues(data->ic, XNResetState, XIMPreserveState, (char *) 0);
+    } else {
+        qWarning("Failed to create XIC");
+    }
+
+    ximData[w->effectiveWinId()] = data;
+    return data;
+}
+
+void QXIMInputContext::update()
+{
+    QWidget *w = focusWidget();
+    if (!w)
+        return;
+
+    ICData *data = ximData.value(w->effectiveWinId());
+    if (!data || !data->ic)
+        return;
+
+    QRect r = w->inputMethodQuery(Qt::ImMicroFocus).toRect();
+    QPoint p;
+    if (w->nativeParentWidget())
+        p = w->mapTo(w->nativeParentWidget(), QPoint((r.left() + r.right() + 1)/2, r.bottom()));
+    else
+        p = QPoint((r.left() + r.right() + 1)/2, r.bottom());
+    XPoint spot;
+    spot.x = p.x();
+    spot.y = p.y();
+
+    r = w->rect();
+    XRectangle area;
+    area.x = r.x();
+    area.y = r.y();
+    area.width = r.width();
+    area.height = r.height();
+
+    XFontSet fontset = getFontSet(qvariant_cast<QFont>(w->inputMethodQuery(Qt::ImFont)));
+    if (data->fontset == fontset)
+        fontset = 0;
+    else
+        data->fontset = fontset;
+
+    XVaNestedList preedit_attr;
+    if (fontset)
+        preedit_attr = XVaCreateNestedList(0,
+                                           XNSpotLocation, &spot,
+                                           XNArea, &area,
+                                           XNFontSet, fontset,
+                                           (char *) 0);
+    else
+        preedit_attr = XVaCreateNestedList(0,
+                                           XNSpotLocation, &spot,
+                                           XNArea, &area,
+                                           (char *) 0);
+
+    XSetICValues(data->ic, XNPreeditAttributes, preedit_attr, (char *) 0);
+    XFree(preedit_attr);
+}
+
+
+#else
+/*
+    When QT_NO_XIM is defined, we provide a dummy implementation for
+    this class. The reason for this is that the header file is moc'ed
+    regardless of QT_NO_XIM. The best would be to remove the file
+    completely from the pri file is QT_NO_XIM was defined, or for moc
+    to understand this preprocessor directive. Since the header does
+    not declare this class when QT_NO_XIM is defined, this is dead
+    code.
+*/
+bool QXIMInputContext::isComposing() const { return false; }
+QString QXIMInputContext::identifierName() { return QString(); }
+void QXIMInputContext::mouseHandler(int, QMouseEvent *) {}
+void QXIMInputContext::setFocusWidget(QWidget *) {}
+void QXIMInputContext::reset() {}
+void QXIMInputContext::update() {}
+QXIMInputContext::~QXIMInputContext() {}
+void QXIMInputContext::widgetDestroyed(QWidget *) {}
+QString QXIMInputContext::language() { return QString(); }
+bool QXIMInputContext::x11FilterEvent(QWidget *, XEvent *) { return true; }
+
+#endif //QT_NO_XIM
+
+QT_END_NAMESPACE
+
+#endif //QT_NO_IM