source: trunk/src/gui/kernel/qwidget_mac.mm@ 427

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information ([email protected])
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU 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 [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/

/****************************************************************************
**
** Copyright (c) 2007-2008, Apple, Inc.
**
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
**
**   * Redistributions of source code must retain the above copyright notice,
**     this list of conditions and the following disclaimer.
**
**   * Redistributions in binary form must reproduce the above copyright notice,
**     this list of conditions and the following disclaimer in the documentation
**     and/or other materials provided with the distribution.
**
**   * Neither the name of Apple, Inc. nor the names of its contributors
**     may be used to endorse or promote products derived from this software
**     without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
** PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
** LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
** NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
****************************************************************************/
//#define QT_RASTER_PAINTENGINE

#include <private/qt_mac_p.h>
#include <private/qeventdispatcher_mac_p.h>

#include "qapplication.h"
#include "qapplication_p.h"
#include "qbitmap.h"
#include "qcursor.h"
#include "qdesktopwidget.h"
#include "qevent.h"
#include "qimage.h"
#include "qlayout.h"
#include "qmenubar.h"
#include <private/qbackingstore_p.h>
#ifdef QT_RASTER_PAINTENGINE
# include <private/qpaintengine_raster_p.h>
#endif
#include <private/qwindowsurface_mac_p.h>
#include <private/qpaintengine_mac_p.h>
#include "qpainter.h"
#include "qstyle.h"
#include "qtimer.h"
#include "qfocusframe.h"
#include "qdebug.h"
#include <private/qmainwindowlayout_p.h>

#include <private/qabstractscrollarea_p.h>
#include <qabstractscrollarea.h>
#include <ApplicationServices/ApplicationServices.h>
#include <limits.h>
#include <private/qt_cocoa_helpers_mac_p.h>
#include <private/qcocoaview_mac_p.h>
#include <private/qcocoawindow_mac_p.h>
#include <private/qcocoawindowdelegate_mac_p.h>
#include <private/qcocoapanel_mac_p.h>

#include "qwidget_p.h"
#include "qdnd_p.h"
#include <QtGui/qgraphicsproxywidget.h>

QT_BEGIN_NAMESPACE

#define XCOORD_MAX 16383
#define WRECT_MAX 8191

#ifndef QT_MAC_USE_COCOA

extern "C" {
    extern OSStatus _HIViewScrollRectWithOptions(HIViewRef, const HIRect *, CGFloat, CGFloat,
                                                 OptionBits);
}
#define kHIViewScrollRectAdjustInvalid 1
#define kHIViewScrollRectDontInvalidateRevealedArea 2
#endif


/*****************************************************************************
  QWidget debug facilities
 *****************************************************************************/
//#define DEBUG_WINDOW_RGNS
//#define DEBUG_WINDOW_CREATE
//#define DEBUG_WINDOW_STATE
//#define DEBUG_WIDGET_PAINT

/*****************************************************************************
  QWidget globals
 *****************************************************************************/
#ifndef QT_MAC_USE_COCOA
typedef QHash<Qt::WindowFlags, WindowGroupRef> WindowGroupHash;
Q_GLOBAL_STATIC(WindowGroupHash, qt_mac_window_groups)
const UInt32 kWidgetCreatorQt = kEventClassQt;
enum {
    kWidgetPropertyQWidget = 'QWId' //QWidget *
};
#endif

static bool qt_mac_raise_process = true;
static OSWindowRef qt_root_win = 0;
QWidget *mac_mouse_grabber = 0;
QWidget *mac_keyboard_grabber = 0;

#ifndef QT_MAC_USE_COCOA
#ifdef QT_NAMESPACE

// produce the string "com.trolltech.qt-namespace.widget", where "namespace" is the contents of QT_NAMESPACE.
#define SS(x) #x
#define S0(x) SS(x)
#define S "com.trolltech.qt-" S0(QT_NAMESPACE) ".widget"

static CFStringRef kObjectQWidget = CFSTR(S);

#undef SS
#undef S0
#undef S

#else
static CFStringRef kObjectQWidget = CFSTR("com.trolltech.qt.widget");
#endif // QT_NAMESPACE
#endif // QT_MAC_USE_COCOA

/*****************************************************************************
  Externals
 *****************************************************************************/
extern QWidget *qt_mac_modal_blocked(QWidget *); //qapplication_mac.mm
extern void qt_event_request_activate(QWidget *); //qapplication_mac.mm
extern bool qt_event_remove_activate(); //qapplication_mac.mm
extern void qt_mac_event_release(QWidget *w); //qapplication_mac.mm
extern void qt_event_request_showsheet(QWidget *); //qapplication_mac.mm
extern void qt_event_request_window_change(QWidget *); //qapplication_mac.mm
extern QPointer<QWidget> qt_mouseover; //qapplication_mac.mm
extern IconRef qt_mac_create_iconref(const QPixmap &); //qpixmap_mac.cpp
extern void qt_mac_set_cursor(const QCursor *, const QPoint &); //qcursor_mac.mm
extern void qt_mac_update_cursor(); //qcursor_mac.mm
extern bool qt_nograb();
extern CGImageRef qt_mac_create_cgimage(const QPixmap &, bool); //qpixmap_mac.cpp
extern RgnHandle qt_mac_get_rgn(); //qregion_mac.cpp
extern QRegion qt_mac_convert_mac_region(RgnHandle rgn); //qregion_mac.cpp

/*****************************************************************************
  QWidget utility functions
 *****************************************************************************/
void Q_GUI_EXPORT qt_mac_set_raise_process(bool b) { qt_mac_raise_process = b; }
static QSize qt_mac_desktopSize()
{
    int w = 0, h = 0;
    CGDisplayCount cg_count;
    CGGetActiveDisplayList(0, 0, &cg_count);
    QVector<CGDirectDisplayID> displays(cg_count);
    CGGetActiveDisplayList(cg_count, displays.data(), &cg_count);
    Q_ASSERT(cg_count == (CGDisplayCount)displays.size());
    for(int i = 0; i < (int)cg_count; ++i) {
        CGRect r = CGDisplayBounds(displays.at(i));
        w = qMax<int>(w, qRound(r.origin.x + r.size.width));
        h = qMax<int>(h, qRound(r.origin.y + r.size.height));
    }
    return QSize(w, h);
}

#ifdef QT_MAC_USE_COCOA
static NSDrawer *qt_mac_drawer_for(const QWidget *widget)
{
    // This only goes one level below the content view so start with the window.
    // This works fine for straight Qt stuff, but runs into problems if we are
    // embedding, but if that's the case, they probably want to be using
    // NSDrawer directly.
    NSView *widgetView = reinterpret_cast<NSView *>(widget->window()->winId());
    NSArray *windows = [NSApp windows];
    for (NSWindow *window in windows) {
        NSArray *drawers = [window drawers];
        for (NSDrawer *drawer in drawers) {
            NSArray *views = [[drawer contentView] subviews];
            for (NSView *view in views) {
                if (view == widgetView)
                    return drawer;
            }
        }
    }
    return 0;
}
#endif

static void qt_mac_destructView(OSViewRef view)
{
#ifdef QT_MAC_USE_COCOA
    [view removeFromSuperview];
    [view release];
#else
    HIViewRemoveFromSuperview(view);
    CFRelease(view);
#endif
}

static void qt_mac_destructWindow(OSWindowRef window)
{
#ifdef QT_MAC_USE_COCOA
    if ([window isVisible] && [window isSheet]){
        [NSApp endSheet:window];
        [window orderOut:window];
    }

    [[QT_MANGLE_NAMESPACE(QCocoaWindowDelegate) sharedDelegate] resignDelegateForWindow:window];
    [window release];
#else
    // Remove property to clean up memory:
    RemoveWindowProperty(window, kWidgetCreatorQt, kWidgetPropertyQWidget);
    CFRelease(window);
#endif
}

static void qt_mac_destructDrawer(NSDrawer *drawer)
{
#ifdef QT_MAC_USE_COCOA
    [[QT_MANGLE_NAMESPACE(QCocoaWindowDelegate) sharedDelegate] resignDelegateForDrawer:drawer];
    [drawer release];
#else
    Q_UNUSED(drawer);
#endif
}

bool qt_mac_can_clickThrough(const QWidget *w)
{
    static int qt_mac_carbon_clickthrough = -1;
    if (qt_mac_carbon_clickthrough < 0)
        qt_mac_carbon_clickthrough = !qgetenv("QT_MAC_NO_COCOA_CLICKTHROUGH").isEmpty();
    bool ret = !qt_mac_carbon_clickthrough;
    for ( ; w; w = w->parentWidget()) {
        if (w->testAttribute(Qt::WA_MacNoClickThrough)) {
            ret = false;
            break;
        }
    }
    return ret;
}

bool qt_mac_is_macsheet(const QWidget *w)
{
    if (!w)
        return false;

    Qt::WindowModality modality = w->windowModality();
    if (modality == Qt::ApplicationModal)
        return false;
    return w->parentWidget() && (modality == Qt::WindowModal || w->windowType() == Qt::Sheet);
}

bool qt_mac_is_macdrawer(const QWidget *w)
{
    return (w && w->parentWidget() && w->windowType() == Qt::Drawer);
}

bool qt_mac_set_drawer_preferred_edge(QWidget *w, Qt::DockWidgetArea where) //users of Qt for Mac OS X can use this..
{
    if(!qt_mac_is_macdrawer(w))
        return false;

#if QT_MAC_USE_COCOA
    NSDrawer *drawer = qt_mac_drawer_for(w);
    if (!drawer)
        return false;
        NSRectEdge      edge;
    if (where & Qt::LeftDockWidgetArea)
        edge = NSMinXEdge;
    else if (where & Qt::RightDockWidgetArea)
        edge = NSMaxXEdge;
    else if (where & Qt::TopDockWidgetArea)
                edge = NSMaxYEdge;
    else if (where & Qt::BottomDockWidgetArea)
        edge = NSMinYEdge;
    else
        return false;

    if (edge == [drawer preferredEdge]) //no-op
        return false;

    if (w->isVisible()) {
            [drawer close];
            [drawer openOnEdge:edge];
        }
        [drawer setPreferredEdge:edge];
#else
    OSWindowRef window = qt_mac_window_for(w);
    OptionBits edge;
    if(where & Qt::LeftDockWidgetArea)
        edge = kWindowEdgeLeft;
    else if(where & Qt::RightDockWidgetArea)
        edge = kWindowEdgeRight;
    else if(where & Qt::TopDockWidgetArea)
        edge = kWindowEdgeTop;
    else if(where & Qt::BottomDockWidgetArea)
        edge = kWindowEdgeBottom;
    else
        return false;

    if(edge == GetDrawerPreferredEdge(window)) //no-op
        return false;

    //do it
    SetDrawerPreferredEdge(window, edge);
    if(w->isVisible()) {
        CloseDrawer(window, false);
        OpenDrawer(window, edge, true);
    }
#endif
    return true;
}

#ifndef QT_MAC_USE_COCOA
Q_GUI_EXPORT
#endif
QPoint qt_mac_posInWindow(const QWidget *w)
{
    QPoint ret = w->data->wrect.topLeft();
    while(w && !w->isWindow()) {
        ret += w->pos();
        w =  w->parentWidget();
    }
    return ret;
}

//find a QWidget from a OSWindowRef
QWidget *qt_mac_find_window(OSWindowRef window)
{
#ifdef QT_MAC_USE_COCOA
    return [window QT_MANGLE_NAMESPACE(qt_qwidget)];
#else
    if(!window)
        return 0;

    QWidget *ret;
    if(GetWindowProperty(window, kWidgetCreatorQt, kWidgetPropertyQWidget, sizeof(ret), 0, &ret) == noErr)
        return ret;
    return 0;
#endif
}

inline static void qt_mac_set_fullscreen_mode(bool b)
{
    extern bool qt_mac_app_fullscreen; //qapplication_mac.cpp
    if(qt_mac_app_fullscreen == b)
        return;
    qt_mac_app_fullscreen = b;
#if QT_MAC_USE_COCOA
    if(b)
        SetSystemUIMode(kUIModeAllHidden, kUIOptionAutoShowMenuBar);
    else
        SetSystemUIMode(kUIModeNormal, 0);
#else
    if(b)
        HideMenuBar();
    else
        ShowMenuBar();
#endif
}

Q_GUI_EXPORT OSViewRef qt_mac_nativeview_for(const QWidget *w)
{
    return reinterpret_cast<OSViewRef>(w->data->winid);
}

Q_GUI_EXPORT OSViewRef qt_mac_get_contentview_for(OSWindowRef w)
{
#ifdef QT_MAC_USE_COCOA
    return [w contentView];
#else
    HIViewRef contentView = 0;
    OSStatus err = GetRootControl(w, &contentView);  // Returns the window's content view (Apple QA1214)
    if (err == errUnknownControl) {
        contentView = HIViewGetRoot(w);
    } else if (err != noErr) {
        qWarning("Qt:Could not get content or root view of window! %s:%d [%ld]",
                 __FILE__, __LINE__, err);
    }
    return contentView;
#endif
}

bool qt_mac_sendMacEventToWidget(QWidget *widget, EventRef ref)
{
    return widget->macEvent(0, ref);
}

Q_GUI_EXPORT OSWindowRef qt_mac_window_for(OSViewRef view)
{
#ifdef QT_MAC_USE_COCOA
    if (view)
        return [view window];
    return 0;
#else
    return HIViewGetWindow(view);
#endif
}

static bool qt_isGenuineQWidget(OSViewRef ref)
{
#ifdef QT_MAC_USE_COCOA
    return [ref isKindOfClass:[QT_MANGLE_NAMESPACE(QCocoaView) class]];
#else
    return HIObjectIsOfClass(HIObjectRef(ref), kObjectQWidget);
#endif
}

bool qt_isGenuineQWidget(const QWidget *window)
{
    return window && qt_isGenuineQWidget(OSViewRef(window->winId()));
}

Q_GUI_EXPORT OSWindowRef qt_mac_window_for(const QWidget *w)
{
    OSViewRef hiview = qt_mac_nativeview_for(w);
    if (hiview){
        OSWindowRef window = qt_mac_window_for(hiview);
        if (!window && qt_isGenuineQWidget(hiview)) {
            QWidget *myWindow = w->window();
            // This is a workaround for NSToolbar. When a widget is hidden
            // by clicking the toolbar button, Cocoa reparents the widgets
            // to another window (but Qt doesn't know about it).
            // When we start showing them, it reparents back,
            // but at this point it's window is nil, but the window it's being brought
            // into (the Qt one) is for sure created.
            // This stops the hierarchy moving under our feet.
            if (myWindow != w && qt_mac_window_for(qt_mac_nativeview_for(myWindow)))
                return qt_mac_window_for(qt_mac_nativeview_for(myWindow));

            myWindow->d_func()->createWindow_sys();
            // Reget the hiview since the "create window could potentially move the view (I guess).
            hiview = qt_mac_nativeview_for(w);
            window = qt_mac_window_for(hiview);
        }
        return window;
    }
    return 0;
}
#ifndef QT_MAC_USE_COCOA
/*  Checks if the current group is a 'stay on top' group. If so, the
    group gets removed from the hash table */
static void qt_mac_release_stays_on_top_group(WindowGroupRef group)
{
    for (WindowGroupHash::iterator it = qt_mac_window_groups()->begin(); it != qt_mac_window_groups()->end(); ++it) {
        if (it.value() == group) {
            qt_mac_window_groups()->remove(it.key());
            return;
        }
    }
}

/* Use this function instead of ReleaseWindowGroup, this will be sure to release the
   stays on top window group (created with qt_mac_get_stays_on_top_group below) */
static void qt_mac_release_window_group(WindowGroupRef group)
{
    ReleaseWindowGroup(group);
    if (GetWindowGroupRetainCount(group) == 0)
        qt_mac_release_stays_on_top_group(group);
}
#define ReleaseWindowGroup(x) Are you sure you wanted to do that? (you wanted qt_mac_release_window_group)

SInt32 qt_mac_get_group_level(WindowClass wclass)
{
    SInt32 group_level;
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
        CGWindowLevel tmpLevel;
        GetWindowGroupLevelOfType(GetWindowGroupOfClass(wclass), kWindowGroupLevelActive, &tmpLevel);
        group_level = tmpLevel;
    } else
#endif
    {
        GetWindowGroupLevel(GetWindowGroupOfClass(wclass), &group_level);
    }
    return group_level;
}
#endif

#ifndef QT_MAC_USE_COCOA
static void qt_mac_set_window_group(OSWindowRef window, Qt::WindowFlags flags, int level)
{
    WindowGroupRef group = 0;
    if (qt_mac_window_groups()->contains(flags)) {
        group = qt_mac_window_groups()->value(flags);
        RetainWindowGroup(group);
    } else {
        CreateWindowGroup(kWindowActivationScopeNone, &group);
        SetWindowGroupLevel(group, level);
        SetWindowGroupParent(group, GetWindowGroupOfClass(kAllWindowClasses));
        qt_mac_window_groups()->insert(flags, group);
    }
    SetWindowGroup(window, group);
}

inline static void qt_mac_set_window_group_to_stays_on_top(OSWindowRef window, Qt::WindowType type)
{
    // We create one static stays on top window group so that
    // all stays on top (aka popups) will fall into the same
    // group and be able to be raise()'d with releation to one another (from
    // within the same window group).
    qt_mac_set_window_group(window, type|Qt::WindowStaysOnTopHint, qt_mac_get_group_level(kOverlayWindowClass));
}

inline static void qt_mac_set_window_group_to_tooltip(OSWindowRef window)
{
    // Since new groups are created for 'stays on top' windows, the
    // same must be done for tooltips. Otherwise, tooltips would be drawn
    // below 'stays on top' widgets even tough they are on the same level.
    // Also, add 'two' to the group level to make sure they also get on top of popups.
    qt_mac_set_window_group(window, Qt::ToolTip, qt_mac_get_group_level(kHelpWindowClass)+2);
}

inline static void qt_mac_set_window_group_to_popup(OSWindowRef window)
{
    // In Qt, a popup is seen as a 'stay on top' window.
    // Since new groups are created for 'stays on top' windows, the
    // same must be done for popups. Otherwise, popups would be drawn
    // below 'stays on top' windows. Add 1 to get above pure stay-on-top windows.
    qt_mac_set_window_group(window, Qt::Popup, qt_mac_get_group_level(kOverlayWindowClass)+1);
}
#endif

inline static bool updateRedirectedToGraphicsProxyWidget(QWidget *widget, const QRect &rect)
{
    if (!widget)
        return false;

#ifndef QT_NO_GRAPHICSVIEW
    QWidget *tlw = widget->window();
    QWExtra *extra = qt_widget_private(tlw)->extra;
    if (extra && extra->proxyWidget) {
        extra->proxyWidget->update(rect.translated(widget->mapTo(tlw, QPoint())));
        return true;
    }
#endif

    return false;
}

inline static bool updateRedirectedToGraphicsProxyWidget(QWidget *widget, const QRegion &rgn)
{
    if (!widget)
        return false;

#ifndef QT_NO_GRAPHICSVIEW
    QWidget *tlw = widget->window();
    QWExtra *extra = qt_widget_private(tlw)->extra;
    if (extra && extra->proxyWidget) {
        const QPoint offset(widget->mapTo(tlw, QPoint()));
        const QVector<QRect> rects = rgn.rects();
        for (int i = 0; i < rects.size(); ++i)
            extra->proxyWidget->update(rects.at(i).translated(offset));
        return true;
    }
#endif

    return false;
}

void QWidgetPrivate::macUpdateIsOpaque()
{
    Q_Q(QWidget);
    if (!q->testAttribute(Qt::WA_WState_Created))
        return;
#ifndef QT_MAC_USE_COCOA
    HIViewFeatures bits;
    HIViewRef hiview = qt_mac_nativeview_for(q);
    HIViewGetFeatures(hiview, &bits);
    if ((bits & kHIViewIsOpaque) == isOpaque)
        return;
    if (isOpaque) {
        HIViewChangeFeatures(hiview, kHIViewIsOpaque, 0);
    } else {
        HIViewChangeFeatures(hiview, 0, kHIViewIsOpaque);
    }
    if (q->isVisible())
        HIViewReshapeStructure(qt_mac_nativeview_for(q));
#else
    if (isRealWindow() && !q->testAttribute(Qt::WA_MacBrushedMetal)) {
        bool opaque = isOpaque;
        if (extra && extra->imageMask)
            opaque = false; // we are never opaque when we have a mask.
        [qt_mac_window_for(q) setOpaque:opaque];
    }
#endif
}
#ifdef QT_MAC_USE_COCOA
static OSWindowRef qt_mac_create_window(QWidget *widget, WindowClass wclass,
                                        NSUInteger wattr, const QRect &crect)
{
    // Determine if we need to add in our "custom window" attribute. Cocoa is rather clever
    // in deciding if we need the maximize button or not (i.e., it's resizeable, so you
    // must need a maximize button). So, the only buttons we have control over are the
    // close and minimize buttons. If someone wants to customize and NOT have the maximize
    // button, then we have to do our hack. We only do it for these cases because otherwise
    // the window looks different when activated. This "QtMacCustomizeWindow" attribute is
    // intruding on a public space and WILL BREAK in the future.
    // One can hope that there is a more public API available by that time.
    Qt::WindowFlags flags = widget ? widget->windowFlags() : Qt::WindowFlags(0);
    if ((flags & Qt::CustomizeWindowHint)) {
        if ((flags & (Qt::WindowCloseButtonHint | Qt::WindowSystemMenuHint
                      | Qt::WindowMinimizeButtonHint | Qt::WindowTitleHint))
            && !(flags & Qt::WindowMaximizeButtonHint))
            wattr |= QtMacCustomizeWindow;
    }

    // If we haven't created the desktop widget, you have to pass the rectangle
    // in "cocoa coordinates" (i.e., top points to the lower left coordinate).
    // Otherwise, we do the conversion for you. Since we are the only ones that
    // create the desktop widget, this is OK (but confusing).
    NSRect geo = NSMakeRect(crect.left(),
                            (qt_root_win != 0) ? flipYCoordinate(crect.bottom() + 1) : crect.top(),
                            crect.width(), crect.height());
    QMacCocoaAutoReleasePool pool;
    OSWindowRef window;
    switch (wclass) {
    case kMovableModalWindowClass:
    case kModalWindowClass:
    case kSheetWindowClass:
    case kFloatingWindowClass:
    case kOverlayWindowClass:
    case kHelpWindowClass: {
        NSPanel *panel;
        BOOL needFloating = NO;
        BOOL worksWhenModal = widget && (widget->windowType() == Qt::Popup);
        // Add in the extra flags if necessary.
        switch (wclass) {
        case kSheetWindowClass:
            wattr |= NSDocModalWindowMask;
            break;
        case kFloatingWindowClass:
        case kHelpWindowClass:
            needFloating = YES;
            wattr |= NSUtilityWindowMask;
            break;
        default:
            break;
        }
        panel = [[QT_MANGLE_NAMESPACE(QCocoaPanel) alloc] QT_MANGLE_NAMESPACE(qt_initWithQWidget):widget contentRect:geo styleMask:wattr];
        [panel setFloatingPanel:needFloating];
        [panel setWorksWhenModal:worksWhenModal];
        window = panel;
        break;
    }
    case kDrawerWindowClass: {
        NSDrawer *drawer = [[NSDrawer alloc] initWithContentSize:geo.size preferredEdge:NSMinXEdge];
        [[QT_MANGLE_NAMESPACE(QCocoaWindowDelegate) sharedDelegate] becomeDelegateForDrawer:drawer widget:widget];
        QWidget *parentWidget = widget->parentWidget();
        if (parentWidget)
            [drawer setParentWindow:qt_mac_window_for(parentWidget)];
        [drawer setLeadingOffset:0.0];
        [drawer setTrailingOffset:25.0];
        window = [[drawer contentView] window];  // Just to make sure we actually return a window
        break;
    }
    default:
        window = [[QT_MANGLE_NAMESPACE(QCocoaWindow) alloc] QT_MANGLE_NAMESPACE(qt_initWithQWidget):widget contentRect:geo styleMask:wattr];
        break;
    }
    qt_syncCocoaTitleBarButtons(window, widget);
    return window;
}
#else
static OSWindowRef qt_mac_create_window(QWidget *, WindowClass wclass, WindowAttributes wattr,
                                        const QRect &crect)
{
    OSWindowRef window;
    Rect geo;
    SetRect(&geo, crect.left(), crect.top(), crect.right() + 1, crect.bottom() + 1);
    OSStatus err;
    if(geo.right <= geo.left)           geo.right = geo.left + 1;
    if(geo.bottom <= geo.top)           geo.bottom = geo.top + 1;
    Rect null_rect;
        SetRect(&null_rect, 0, 0, 1, 1);
    err = CreateNewWindow(wclass, wattr, &null_rect, &window);
    if(err == noErr) {
        err = SetWindowBounds(window, kWindowContentRgn, &geo);
        if(err != noErr)
            qWarning("QWidget: Internal error (%s:%d)", __FILE__, __LINE__);
    }
    return window;
}

// window events
static EventTypeSpec window_events[] = {
    { kEventClassWindow, kEventWindowClose },
    { kEventClassWindow, kEventWindowExpanded },
    { kEventClassWindow, kEventWindowZoomed },
    { kEventClassWindow, kEventWindowCollapsed },
    { kEventClassWindow, kEventWindowToolbarSwitchMode },
    { kEventClassWindow, kEventWindowProxyBeginDrag },
    { kEventClassWindow, kEventWindowProxyEndDrag },
    { kEventClassWindow, kEventWindowResizeCompleted },
    { kEventClassWindow, kEventWindowBoundsChanging },
    { kEventClassWindow, kEventWindowBoundsChanged },
    { kEventClassWindow, kEventWindowGetRegion },
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
    { kEventClassWindow, kEventWindowGetClickModality },
#endif
    { kEventClassWindow, kEventWindowTransitionCompleted },
    { kEventClassMouse, kEventMouseDown }
};
static EventHandlerUPP mac_win_eventUPP = 0;
static void cleanup_win_eventUPP()
{
    DisposeEventHandlerUPP(mac_win_eventUPP);
    mac_win_eventUPP = 0;
}
static const EventHandlerUPP make_win_eventUPP()
{
    if(mac_win_eventUPP)
        return mac_win_eventUPP;
    qAddPostRoutine(cleanup_win_eventUPP);
    return mac_win_eventUPP = NewEventHandlerUPP(QWidgetPrivate::qt_window_event);
}
OSStatus QWidgetPrivate::qt_window_event(EventHandlerCallRef er, EventRef event, void *)
{
    QScopedLoopLevelCounter loopLevelCounter(qApp->d_func()->threadData);
    bool handled_event = true;
    UInt32 ekind = GetEventKind(event), eclass = GetEventClass(event);
    switch(eclass) {
    case kEventClassWindow: {
        WindowRef wid = 0;
        GetEventParameter(event, kEventParamDirectObject, typeWindowRef, 0,
                          sizeof(WindowRef), 0, &wid);
        QWidget *widget = qt_mac_find_window(wid);
        if(!widget) {
            handled_event = false;
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
        } else if(ekind == kEventWindowGetClickModality) {
            // Carbon will send us kEventWindowGetClickModality before every
            // mouse press / release event. By returning 'true', we tell Carbon
            // that we would like the event target to receive the mouse event even
            // if the target is modally shaddowed. In Qt, this makes sense when we
            // e.g. have a popup showing, as the popup will grab the event
            // and perhaps use it to close itself.
            // By also setting the current modal window back into the event, we
            // help Carbon determining which window is supposed to be raised.
            handled_event = qApp->activePopupWidget() ? true : false;
            QWidget *top = 0;
            if (!QApplicationPrivate::tryModalHelper(widget, &top) && top && top != widget){
                if(!qt_mac_is_macsheet(top) || top->parentWidget() != widget) {
                    handled_event = true;
                    WindowPtr topWindowRef = qt_mac_window_for(top);
                    SetEventParameter(event, kEventParamModalWindow, typeWindowRef, sizeof(topWindowRef), &topWindowRef);
                    HIModalClickResult clickResult = kHIModalClickIsModal;
                    SetEventParameter(event, kEventParamModalClickResult, typeModalClickResult, sizeof(clickResult), &clickResult);
                }
            }
#endif
        } else if(ekind == kEventWindowClose) {
            widget->d_func()->close_helper(QWidgetPrivate::CloseWithSpontaneousEvent);
            QMenuBar::macUpdateMenuBar();
        } else if (ekind == kEventWindowTransitionCompleted) {
            WindowTransitionAction transitionAction;
            GetEventParameter(event, kEventParamWindowTransitionAction, typeWindowTransitionAction,
                              0, sizeof(transitionAction), 0, &transitionAction);
            if (transitionAction == kWindowHideTransitionAction)
                widget->hide();
        } else if(ekind == kEventWindowExpanded) {
            Qt::WindowStates currState = Qt::WindowStates(widget->data->window_state);
            Qt::WindowStates newState = currState;
            if (currState & Qt::WindowMinimized)
                newState &= ~Qt::WindowMinimized;
            if (!(currState & Qt::WindowActive))
                newState |= Qt::WindowActive;
            if (newState != currState) {
                // newState will differ from currState if the window
                // was expanded after clicking on the jewels (as opposed
                // to calling QWidget::setWindowState)
                widget->data->window_state = newState;
                QWindowStateChangeEvent e(currState);
                QApplication::sendSpontaneousEvent(widget, &e);
            }

            QShowEvent qse;
            QApplication::sendSpontaneousEvent(widget, &qse);
        } else if(ekind == kEventWindowZoomed) {
            WindowPartCode windowPart;
            GetEventParameter(event, kEventParamWindowPartCode,
                              typeWindowPartCode, 0, sizeof(windowPart), 0, &windowPart);
            if(windowPart == inZoomIn && widget->isMaximized()) {

                widget->data->window_state = widget->data->window_state & ~Qt::WindowMaximized;
                QWindowStateChangeEvent e(Qt::WindowStates(widget->data->window_state | Qt::WindowMaximized));
                QApplication::sendSpontaneousEvent(widget, &e);
            } else if(windowPart == inZoomOut && !widget->isMaximized()) {
                widget->data->window_state = widget->data->window_state | Qt::WindowMaximized;
                QWindowStateChangeEvent e(Qt::WindowStates(widget->data->window_state
                                                           & ~Qt::WindowMaximized));
                QApplication::sendSpontaneousEvent(widget, &e);
            }
            extern QPointer<QWidget> qt_button_down; //qapplication_mac.cpp
            qt_button_down = 0;
        } else if(ekind == kEventWindowCollapsed) {
            if (!widget->isMinimized()) {
                widget->data->window_state = widget->data->window_state | Qt::WindowMinimized;
                QWindowStateChangeEvent e(Qt::WindowStates(widget->data->window_state & ~Qt::WindowMinimized));
                QApplication::sendSpontaneousEvent(widget, &e);
            }

            // Deactivate this window:
            if (widget->isActiveWindow() && !(widget->windowType() == Qt::Popup)) {
                QWidget *w = 0;
                if (widget->parentWidget())
                    w = widget->parentWidget()->window();
                if (!w || (!w->isVisible() && !w->isMinimized())) {
                    for (WindowPtr wp = GetFrontWindowOfClass(kDocumentWindowClass, true);
                        wp; wp = GetNextWindowOfClass(wp, kDocumentWindowClass, true)) {
                        if ((w = qt_mac_find_window(wp)))
                            break;
                    }
                }
                if(!(w && w->isVisible() && !w->isMinimized()))
                    qApp->setActiveWindow(0);
            }

            //we send a hide to be like X11/Windows
            QEvent e(QEvent::Hide);
            QApplication::sendSpontaneousEvent(widget, &e);
            extern QPointer<QWidget> qt_button_down; //qapplication_mac.cpp
            qt_button_down = 0;
        } else if(ekind == kEventWindowToolbarSwitchMode) {
            QToolBarChangeEvent ev(!(GetCurrentKeyModifiers() & cmdKey));
            QApplication::sendSpontaneousEvent(widget, &ev);
            HIToolbarRef toolbar;
            if (GetWindowToolbar(wid, &toolbar) == noErr) {
                if (toolbar) {
                    // Let HIToolbar do its thang, but things like the OpenGL context
                    // needs to know about it.
                    CallNextEventHandler(er, event);
                    qt_event_request_window_change(widget);
                    widget->data->fstrut_dirty = true;
                }
            }
        } else if(ekind == kEventWindowGetRegion) {
            WindowRef window;
            GetEventParameter(event, kEventParamDirectObject, typeWindowRef, 0,
                              sizeof(window), 0, &window);
            WindowRegionCode wcode;
            GetEventParameter(event, kEventParamWindowRegionCode, typeWindowRegionCode, 0,
                              sizeof(wcode), 0, &wcode);
            if (wcode != kWindowOpaqueRgn){
                // If the region is kWindowOpaqueRgn, don't call next
                // event handler cause this will make the shadow of
                // masked windows become offset. Unfortunately, we're not sure why.
                CallNextEventHandler(er, event);
            }
                        RgnHandle rgn;
            GetEventParameter(event, kEventParamRgnHandle, typeQDRgnHandle, 0,
                              sizeof(rgn), 0, &rgn);

            if(QWidgetPrivate::qt_widget_rgn(qt_mac_find_window(window), wcode, rgn, false))
                SetEventParameter(event, kEventParamRgnHandle, typeQDRgnHandle, sizeof(rgn), &rgn);
        } else if(ekind == kEventWindowProxyBeginDrag) {
            QIconDragEvent e;
            QApplication::sendSpontaneousEvent(widget, &e);
        } else if(ekind == kEventWindowResizeCompleted) {
            // Create a mouse up event, since such an event is not send by carbon to the
            // application event handler (while a mouse down <b>is</b> on kEventWindowResizeStarted)
            EventRef mouseUpEvent;
            CreateEvent(0, kEventClassMouse, kEventMouseUp, 0, kEventAttributeUserEvent, &mouseUpEvent);
            UInt16 mbutton = kEventMouseButtonPrimary;
            SetEventParameter(mouseUpEvent, kEventParamMouseButton, typeMouseButton, sizeof(mbutton), &mbutton);
            WindowRef window;
            GetEventParameter(event, kEventParamDirectObject, typeWindowRef, 0, sizeof(window), 0, &window);
            Rect dragRect;
            GetWindowBounds(window, kWindowGrowRgn, &dragRect);
            Point pos = {dragRect.bottom, dragRect.right};
            SetEventParameter(mouseUpEvent, kEventParamMouseLocation, typeQDPoint, sizeof(pos), &pos);
            SendEventToApplication(mouseUpEvent);
            ReleaseEvent(mouseUpEvent);
        } else if(ekind == kEventWindowBoundsChanging || ekind == kEventWindowBoundsChanged) {
            // Panther doesn't send Changing for sheets, only changed, so only
            // bother handling Changed event if we are on 10.3 and we are a
            // sheet.
            if (ekind == kEventWindowBoundsChanged
                    && (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4
                        || !(widget->windowFlags() & Qt::Sheet))) {
                handled_event = false;
            } else {
                UInt32 flags = 0;
                GetEventParameter(event, kEventParamAttributes, typeUInt32, 0,
                                      sizeof(flags), 0, &flags);
                Rect nr;
                GetEventParameter(event, kEventParamCurrentBounds, typeQDRectangle, 0,
                                      sizeof(nr), 0, &nr);

                QRect newRect(nr.left, nr.top, nr.right - nr.left, nr.bottom - nr.top);

                QTLWExtra * const tlwExtra = widget->d_func()->maybeTopData();
                if (tlwExtra && tlwExtra->isSetGeometry == 1) {
                    widget->d_func()->setGeometry_sys_helper(newRect.left(), newRect.top(), newRect.width(), newRect.height(), tlwExtra->isMove);
                } else {
                    //implicitly removes the maximized bit
                    if((widget->data->window_state & Qt::WindowMaximized) &&
                       IsWindowInStandardState(wid, 0, 0)) {
                        widget->data->window_state &= ~Qt::WindowMaximized;
                        QWindowStateChangeEvent e(Qt::WindowStates(widget->data->window_state
                                                    | Qt::WindowMaximized));
                        QApplication::sendSpontaneousEvent(widget, &e);

                    }

                    handled_event = false;
                    const QRect oldRect = widget->data->crect;
                    if((flags & kWindowBoundsChangeOriginChanged)) {
                        if(nr.left != oldRect.x() || nr.top != oldRect.y()) {
                            widget->data->crect.moveTo(nr.left, nr.top);
                            QMoveEvent qme(widget->data->crect.topLeft(), oldRect.topLeft());
                            QApplication::sendSpontaneousEvent(widget, &qme);
                        }
                    }
                    if((flags & kWindowBoundsChangeSizeChanged)) {
                        if (widget->isWindow()) {
                            QSize newSize = QLayout::closestAcceptableSize(widget, newRect.size());
                            int dh = newSize.height() - newRect.height();
                            int dw = newSize.width() - newRect.width();
                            if (dw != 0 || dh != 0) {
                                handled_event = true;  // We want to change the bounds, so we handle the event

                                // set the rect, so we can also do the resize down below (yes, we need to resize).
                                newRect.setBottom(newRect.bottom() + dh);
                                newRect.setRight(newRect.right() + dw);

                                nr.left = newRect.x();
                                nr.top = newRect.y();
                                nr.right = nr.left + newRect.width();
                                nr.bottom = nr.top + newRect.height();
                                SetEventParameter(event, kEventParamCurrentBounds, typeQDRectangle, sizeof(Rect), &nr);
                            }
                        }

                        if (oldRect.width() != newRect.width() || oldRect.height() != newRect.height()) {
                            widget->data->crect.setSize(newRect.size());
                            HIRect bounds = CGRectMake(0, 0, newRect.width(), newRect.height());

                            // If the WA_StaticContents attribute is set we can optimize the resize
                            // by only repainting the newly exposed area. We do this by disabling
                            // painting when setting the size of the view. The OS will invalidate
                            // the newly exposed area for us.
                            const bool staticContents = widget->testAttribute(Qt::WA_StaticContents);
                            const HIViewRef view = qt_mac_nativeview_for(widget);
                            if (staticContents)
                                HIViewSetDrawingEnabled(view, false);
                            HIViewSetFrame(view, &bounds);
                            if (staticContents)
                                HIViewSetDrawingEnabled(view, true);

                            QResizeEvent qre(newRect.size(), oldRect.size());
                            QApplication::sendSpontaneousEvent(widget, &qre);
                            qt_event_request_window_change(widget);
                        }
                    }
                }
            }
        } else {
            handled_event = false;
        }
        break; }
    case kEventClassMouse: {
#if 0
        return SendEventToApplication(event);
#endif

        bool send_to_app = false;
        {
            WindowPartCode wpc;
            if (GetEventParameter(event, kEventParamWindowPartCode, typeWindowPartCode, 0,
                                  sizeof(wpc), 0, &wpc) == noErr && wpc != inContent)
                send_to_app = true;
        }
        if(!send_to_app) {
            WindowRef window;
            if(GetEventParameter(event, kEventParamWindowRef, typeWindowRef, 0,
                                 sizeof(window), 0, &window) == noErr) {
                HIViewRef hiview;
                if(HIViewGetViewForMouseEvent(HIViewGetRoot(window), event, &hiview) == noErr) {
                    if(QWidget *w = QWidget::find((WId)hiview)) {
#if 0
                        send_to_app = !w->isActiveWindow();
#else
                        Q_UNUSED(w);
                        send_to_app = true;
#endif
                    }
                }
            }
        }
        if(send_to_app)
            return SendEventToApplication(event);
        handled_event = false;
        break; }
    default:
        handled_event = false;
    }
    if(!handled_event) //let the event go through
        return eventNotHandledErr;
    return noErr; //we eat the event
}

// widget events
static HIObjectClassRef widget_class = 0;
static EventTypeSpec widget_events[] = {
    { kEventClassHIObject, kEventHIObjectConstruct },
    { kEventClassHIObject, kEventHIObjectDestruct },

    { kEventClassControl, kEventControlDraw },
    { kEventClassControl, kEventControlInitialize },
    { kEventClassControl, kEventControlGetPartRegion },
    { kEventClassControl, kEventControlGetClickActivation },
    { kEventClassControl, kEventControlSetFocusPart },
    { kEventClassControl, kEventControlDragEnter },
    { kEventClassControl, kEventControlDragWithin },
    { kEventClassControl, kEventControlDragLeave },
    { kEventClassControl, kEventControlDragReceive },
    { kEventClassControl, kEventControlOwningWindowChanged },
    { kEventClassControl, kEventControlBoundsChanged },
    { kEventClassControl, kEventControlGetSizeConstraints },
    { kEventClassControl, kEventControlVisibilityChanged },

    { kEventClassMouse, kEventMouseDown },
    { kEventClassMouse, kEventMouseUp },
    { kEventClassMouse, kEventMouseMoved },
    { kEventClassMouse, kEventMouseDragged }
};
static EventHandlerUPP mac_widget_eventUPP = 0;
static void cleanup_widget_eventUPP()
{
    DisposeEventHandlerUPP(mac_widget_eventUPP);
    mac_widget_eventUPP = 0;
}
static const EventHandlerUPP make_widget_eventUPP()
{
    if(mac_widget_eventUPP)
        return mac_widget_eventUPP;
    qAddPostRoutine(cleanup_widget_eventUPP);
    return mac_widget_eventUPP = NewEventHandlerUPP(QWidgetPrivate::qt_widget_event);
}
OSStatus QWidgetPrivate::qt_widget_event(EventHandlerCallRef er, EventRef event, void *)
{
    QScopedLoopLevelCounter loopLevelCounter(QApplicationPrivate::instance()->threadData);

    bool handled_event = true;
    UInt32 ekind = GetEventKind(event), eclass = GetEventClass(event);
    switch(eclass) {
    case kEventClassHIObject: {
        HIViewRef view = 0;
        GetEventParameter(event, kEventParamHIObjectInstance, typeHIObjectRef,
                          0, sizeof(view), 0, &view);
        if(ekind == kEventHIObjectConstruct) {
            if(view) {
                HIViewChangeFeatures(view, kHIViewAllowsSubviews, 0);
                SetEventParameter(event, kEventParamHIObjectInstance,
                                  typeVoidPtr, sizeof(view), &view);
            }
        } else if(ekind == kEventHIObjectDestruct) {
            //nothing to really do.. or is there?
        } else {
            handled_event = false;
        }
        break; }
    case kEventClassControl: {
        QWidget *widget = 0;
        HIViewRef hiview = 0;
        if(GetEventParameter(event, kEventParamDirectObject, typeControlRef,
                             0, sizeof(hiview), 0, &hiview) == noErr)
            widget = QWidget::find((WId)hiview);
        if (widget && widget->macEvent(er, event))
            return noErr;
        if(ekind == kEventControlDraw) {
            if(widget && qt_isGenuineQWidget(hiview)) {

                // if there is a window change event pending for any gl child wigets,
                // send it immediately. (required for flicker-free resizing)
                extern void qt_mac_send_posted_gl_updates(QWidget *widget);
                qt_mac_send_posted_gl_updates(widget);

                if (QApplicationPrivate::graphicsSystem() && !widget->d_func()->paintOnScreen()) {
                    widget->d_func()->syncBackingStore();
                    widget->d_func()->dirtyOnWidget = QRegion();
                    return noErr;
                }

                //requested rgn
                RgnHandle rgn;
                GetEventParameter(event, kEventParamRgnHandle, typeQDRgnHandle, 0, sizeof(rgn), 0, &rgn);
                QRegion qrgn(qt_mac_convert_mac_region(rgn));

                //update handles
                GrafPtr qd = 0;
                CGContextRef cg = 0;
#ifndef QT_MAC_NO_QUICKDRAW
                {
                    if(GetEventParameter(event, kEventParamGrafPort, typeGrafPtr, 0, sizeof(qd), 0, &qd) != noErr) {
                        GDHandle dev = 0;
                        GetGWorld(&qd, &dev); //just use the global port..
                    }
                }
                bool end_cg_context = false;
                if(GetEventParameter(event, kEventParamCGContextRef, typeCGContextRef, 0, sizeof(cg), 0, &cg) != noErr && qd) {
                    end_cg_context = true;
                    QDBeginCGContext(qd, &cg);
                }
#else
                if(GetEventParameter(event, kEventParamCGContextRef, typeCGContextRef, 0, sizeof(cg), 0, &cg) != noErr) {
                    Q_ASSERT(false);
                }
#endif
                widget->d_func()->hd = cg;
                widget->d_func()->qd_hd = qd;
                CGContextSaveGState(cg);

#ifdef DEBUG_WIDGET_PAINT
                const bool doDebug = true;
                if(doDebug)  {
                    qDebug("asked to draw %p[%p] [%s::%s] %p[%p] [%d] [%dx%d]", widget, hiview, widget->metaObject()->className(),
                           widget->objectName().local8Bit().data(), widget->parentWidget(),
                           (HIViewRef)(widget->parentWidget() ? qt_mac_nativeview_for(widget->parentWidget()) : (HIViewRef)0),
                           HIViewIsCompositingEnabled(hiview), qt_mac_posInWindow(widget).x(), qt_mac_posInWindow(widget).y());
#if 0
                    QVector<QRect> region_rects = qrgn.rects();
                    qDebug("Region! %d", region_rects.count());
                    for(int i = 0; i < region_rects.count(); i++)
                        qDebug("%d %d %d %d", region_rects[i].x(), region_rects[i].y(),
                               region_rects[i].width(), region_rects[i].height());
                    region_rects = widget->d_func()->clp.rects();
                    qDebug("Widget Region! %d", region_rects.count());
                    for(int i = 0; i < region_rects.count(); i++)
                        qDebug("%d %d %d %d", region_rects[i].x(), region_rects[i].y(),
                               region_rects[i].width(), region_rects[i].height());
#endif
                }
#endif
                if (widget->isVisible() && widget->updatesEnabled()) { //process the actual paint event.
                    if(widget->testAttribute(Qt::WA_WState_InPaintEvent))
                        qWarning("QWidget::repaint: Recursive repaint detected");

                    QPoint redirectionOffset(0, 0);
                    QWidget *tl = widget->window();
                    if (tl) {
                        Qt::WindowFlags flags = tl->windowFlags();
                        if (flags & Qt::FramelessWindowHint
                            || (flags & Qt::CustomizeWindowHint && !(flags & Qt::WindowTitleHint))) {
                            if(tl->d_func()->extra && !tl->d_func()->extra->mask.isEmpty())
                                redirectionOffset += tl->d_func()->extra->mask.boundingRect().topLeft();
                        }
                    }

                    //setup the context
                    widget->setAttribute(Qt::WA_WState_InPaintEvent);
                    QPaintEngine *engine = widget->paintEngine();
                    if (engine)
                        engine->setSystemClip(qrgn);

                    //handle the erase
                    if (engine && (!widget->testAttribute(Qt::WA_NoSystemBackground)
                        && (widget->isWindow() || widget->autoFillBackground())
                        || widget->testAttribute(Qt::WA_TintedBackground)
                        || widget->testAttribute(Qt::WA_StyledBackground))) {
#ifdef DEBUG_WIDGET_PAINT
                        if(doDebug)
                            qDebug(" Handling erase for [%s::%s]", widget->metaObject()->className(),
                                   widget->objectName().local8Bit().data());
#endif
                        if (!redirectionOffset.isNull())
                            widget->d_func()->setRedirected(widget, redirectionOffset);

                        bool was_unclipped = widget->testAttribute(Qt::WA_PaintUnclipped);
                        widget->setAttribute(Qt::WA_PaintUnclipped, false);
                        QPainter p(widget);
                        p.setClipping(false);
                        if(was_unclipped)
                            widget->setAttribute(Qt::WA_PaintUnclipped);

                        QAbstractScrollArea *scrollArea = qobject_cast<QAbstractScrollArea *>(widget->parent());
                        QPoint scrollAreaOffset;
                        if (scrollArea && scrollArea->viewport() == widget) {
                            QAbstractScrollAreaPrivate *priv = static_cast<QAbstractScrollAreaPrivate *>(static_cast<QWidget *>(scrollArea)->d_ptr);
                            scrollAreaOffset = priv->contentsOffset();
                            p.translate(-scrollAreaOffset);
                        }

                        widget->d_func()->paintBackground(&p, qrgn, scrollAreaOffset, widget->isWindow() ? DrawAsRoot : 0);
                        if (widget->testAttribute(Qt::WA_TintedBackground)) {
                            QColor tint = widget->palette().window().color();
                            tint.setAlphaF(.6);
                            const QVector<QRect> &rects = qrgn.rects();
                            for (int i = 0; i < rects.size(); ++i)
                                p.fillRect(rects.at(i).translated(scrollAreaOffset), tint);
                        }
                        p.end();
                        if (!redirectionOffset.isNull())
                            widget->d_func()->restoreRedirected();
                    }

                    if (widget->isWindow() && !widget->d_func()->isOpaque
                           && !widget->testAttribute(Qt::WA_MacBrushedMetal)) {
                        QRect qrgnRect = qrgn.boundingRect();
                        CGContextClearRect(cg, CGRectMake(qrgnRect.x(), qrgnRect.y(), qrgnRect.width(), qrgnRect.height()));
                    }


                    if(!HIObjectIsOfClass((HIObjectRef)hiview, kObjectQWidget))
                        CallNextEventHandler(er, event);

                    //send the paint
                    redirectionOffset += widget->data->wrect.topLeft(); // Map from system to qt coordinates
                    if (!redirectionOffset.isNull())
                        widget->d_func()->setRedirected(widget, redirectionOffset);
                    qrgn.translate(redirectionOffset);
                    QPaintEvent e(qrgn);
                    widget->d_func()->dirtyOnWidget = QRegion();
#ifdef QT3_SUPPORT
                    e.setErased(true);
#endif
                    QApplication::sendSpontaneousEvent(widget, &e);
                    if (!redirectionOffset.isNull())
                        widget->d_func()->restoreRedirected();
#ifdef QT_RASTER_PAINTENGINE
                    if(engine && engine->type() == QPaintEngine::Raster)
                        static_cast<QRasterPaintEngine*>(engine)->flush(widget,
                                                                        qrgn.boundingRect().topLeft());
#endif

                    //cleanup
                    if (engine)
                        engine->setSystemClip(QRegion());

                    widget->setAttribute(Qt::WA_WState_InPaintEvent, false);
                    if(!widget->testAttribute(Qt::WA_PaintOutsidePaintEvent) && widget->paintingActive())
                        qWarning("QWidget: It is dangerous to leave painters active on a widget outside of the PaintEvent");
                }

                widget->d_func()->hd = 0;
                widget->d_func()->qd_hd = 0;
                CGContextRestoreGState(cg);
#ifndef QT_MAC_NO_QUICKDRAW
                if(end_cg_context)
                    QDEndCGContext(qd, &cg);
#endif
            } else if(!HIObjectIsOfClass((HIObjectRef)hiview, kObjectQWidget)) {
                CallNextEventHandler(er, event);
            }
        } else if(ekind == kEventControlInitialize) {
            if(HIObjectIsOfClass((HIObjectRef)hiview, kObjectQWidget)) {
                UInt32 features = kControlSupportsDragAndDrop | kControlSupportsClickActivation | kControlSupportsFocus;
                SetEventParameter(event, kEventParamControlFeatures, typeUInt32, sizeof(features), &features);
            } else {
                handled_event = false;
            }
        } else if(ekind == kEventControlSetFocusPart) {
            if(widget) {
                ControlPartCode part;
                GetEventParameter(event, kEventParamControlPart, typeControlPartCode, 0,
                                  sizeof(part), 0, &part);
                if(part == kControlFocusNoPart){
                    if (widget->hasFocus())
                        QApplicationPrivate::setFocusWidget(0, Qt::OtherFocusReason);
                } else
                    widget->setFocus();
            }
            if(!HIObjectIsOfClass((HIObjectRef)hiview, kObjectQWidget))
                CallNextEventHandler(er, event);
        } else if(ekind == kEventControlGetClickActivation) {
            ClickActivationResult clickT = kActivateAndIgnoreClick;
            SetEventParameter(event, kEventParamClickActivation, typeClickActivationResult,
                              sizeof(clickT), &clickT);
        } else if(ekind == kEventControlGetPartRegion) {
            handled_event = false;
            if(!HIObjectIsOfClass((HIObjectRef)hiview, kObjectQWidget) && CallNextEventHandler(er, event) == noErr) {
                handled_event = true;
                break;
            }
            if(widget && !widget->isWindow()) {
                ControlPartCode part;
                GetEventParameter(event, kEventParamControlPart, typeControlPartCode, 0,
                                  sizeof(part), 0, &part);
                if(part == kControlClickableMetaPart && widget->testAttribute(Qt::WA_TransparentForMouseEvents)) {
                    RgnHandle rgn;
                    GetEventParameter(event, kEventParamControlRegion, typeQDRgnHandle, 0,
                                      sizeof(rgn), 0, &rgn);
                    SetEmptyRgn(rgn);
                    handled_event = true;
                } else if(part == kControlStructureMetaPart || part == kControlClickableMetaPart) {
                    RgnHandle rgn;
                    GetEventParameter(event, kEventParamControlRegion, typeQDRgnHandle, 0,
                                      sizeof(rgn), 0, &rgn);
                    SetRectRgn(rgn, 0, 0, widget->width(), widget->height());
                    if(QWidgetPrivate::qt_widget_rgn(widget, kWindowStructureRgn, rgn, false))
                        handled_event = true;
                } else if(part == kControlOpaqueMetaPart) {
                    if(widget->d_func()->isOpaque) {
                        RgnHandle rgn;
                        GetEventParameter(event, kEventParamControlRegion, typeQDRgnHandle, 0,
                                          sizeof(RgnHandle), 0, &rgn);
                        SetRectRgn(rgn, 0, 0, widget->width(), widget->height());
                        QWidgetPrivate::qt_widget_rgn(widget, kWindowStructureRgn, rgn, false);
                        SetEventParameter(event, kEventParamControlRegion, typeQDRgnHandle,
                                sizeof(RgnHandle), &rgn);
                        handled_event = true;
                    }
                }
            }
        } else if(ekind == kEventControlOwningWindowChanged) {
            if(!HIObjectIsOfClass((HIObjectRef)hiview, kObjectQWidget))
                CallNextEventHandler(er, event);
            if(widget && qt_mac_window_for(hiview)) {
                WindowRef foo = 0;
                GetEventParameter(event, kEventParamControlCurrentOwningWindow, typeWindowRef, 0,
                                  sizeof(foo), 0, &foo);
                widget->d_func()->initWindowPtr();
            }
            if (widget)
                qt_event_request_window_change(widget);
        } else if(ekind == kEventControlDragEnter || ekind == kEventControlDragWithin ||
                  ekind == kEventControlDragLeave || ekind == kEventControlDragReceive) {
            // dnd are really handled in qdnd_mac.cpp,
            // just modularize the code a little...
            DragRef drag;
            GetEventParameter(event, kEventParamDragRef, typeDragRef, 0, sizeof(drag), 0, &drag);
            handled_event = false;
            bool drag_allowed = false;

            QWidget *dropWidget = widget;
            if (qobject_cast<QFocusFrame *>(widget)){
                // We might shadow widgets underneath the focus
                // frame, so stay interrested, and let the dnd through
                drag_allowed = true;
                handled_event = true;
                Point where;
                GetDragMouse(drag, &where, 0);
                dropWidget = QApplication::widgetAt(QPoint(where.h, where.v));

                if (dropWidget != QDragManager::self()->currentTarget()) {
                    // We have to 'fake' enter and leave events for the shaddowed widgets:
                    if (ekind == kEventControlDragEnter) {
                        if (QDragManager::self()->currentTarget())
                            QDragManager::self()->currentTarget()->d_func()->qt_mac_dnd_event(kEventControlDragLeave, drag);
                        if (dropWidget) {
                            dropWidget->d_func()->qt_mac_dnd_event(kEventControlDragEnter, drag);
                        }
                        // Set dropWidget to zero, so qt_mac_dnd_event
                        // doesn't get called a second time below:
                        dropWidget = 0;
                    }
                }
            }

            // Send the dnd event to the widget:
            if (dropWidget && dropWidget->d_func()->qt_mac_dnd_event(ekind, drag)) {
                drag_allowed = true;
                handled_event = true;
            }

            if (ekind == kEventControlDragEnter) {
                // If we don't accept the enter event, we will
                // receive no more drag events for this widget
                const Boolean wouldAccept = drag_allowed ? true : false;
                SetEventParameter(event, kEventParamControlWouldAcceptDrop, typeBoolean,
                        sizeof(wouldAccept), &wouldAccept);
            }
        } else if (ekind == kEventControlBoundsChanged) {
            if (!widget || widget->isWindow() || widget->testAttribute(Qt::WA_Moved) || widget->testAttribute(Qt::WA_Resized)) {
                handled_event = false;
            } else {
                // Sync our view in case some other (non-Qt) view is controlling us.
                handled_event = true;
                Rect newBounds;
                GetEventParameter(event, kEventParamCurrentBounds,
                                  typeQDRectangle, 0, sizeof(Rect), 0, &newBounds);
                QRect rect(newBounds.left, newBounds.top,
                            newBounds.right - newBounds.left, newBounds.bottom - newBounds.top);

                bool moved = widget->testAttribute(Qt::WA_Moved);
                bool resized = widget->testAttribute(Qt::WA_Resized);
                widget->setGeometry(rect);
                widget->setAttribute(Qt::WA_Moved, moved);
                widget->setAttribute(Qt::WA_Resized, resized);
                qt_event_request_window_change(widget);
            }
        } else if (ekind == kEventControlGetSizeConstraints) {
            if (!widget || !qt_isGenuineQWidget(widget)) {
                handled_event = false;
            } else {
                handled_event = true;
                QWidgetItem item(widget);
                QSize size = item.minimumSize();
                HISize hisize = { size.width(), size.height() };
                SetEventParameter(event, kEventParamMinimumSize, typeHISize, sizeof(HISize), &hisize);
                size = item.maximumSize();
                hisize.width = size.width() + 2; // ### shouldn't have to add 2 (but it works).
                hisize.height = size.height();
                SetEventParameter(event, kEventParamMaximumSize, typeHISize, sizeof(HISize), &hisize);
            }
        } else if (ekind == kEventControlVisibilityChanged) {
            handled_event = false;
            if (widget) {
                qt_event_request_window_change(widget);
                if (!HIViewIsVisible(HIViewRef(widget->winId()))) {
                    extern QPointer<QWidget> qt_button_down; //qapplication_mac.cpp
                    if (widget == qt_button_down)
                        qt_button_down = 0;
                }
            }
        }
        break; }
    case kEventClassMouse: {
        bool send_to_app = false;
        extern QPointer<QWidget> qt_button_down; //qapplication_mac.cpp
        if(qt_button_down)
            send_to_app = true;
        if(send_to_app) {
            OSStatus err = SendEventToApplication(event);
            if(err != noErr)
                handled_event = false;
        } else {
            CallNextEventHandler(er, event);
        }
        break; }
    default:
        handled_event = false;
        break;
    }
    if(!handled_event) //let the event go through
        return eventNotHandledErr;
    return noErr; //we eat the event
}
#endif

OSViewRef qt_mac_create_widget(QWidget *widget, QWidgetPrivate *widgetPrivate, OSViewRef parent)
{
#ifdef QT_MAC_USE_COCOA
    QMacCocoaAutoReleasePool pool;
    QT_MANGLE_NAMESPACE(QCocoaView) *view = [[QT_MANGLE_NAMESPACE(QCocoaView) alloc] initWithQWidget:widget widgetPrivate:widgetPrivate];
    if (view && parent)
        [parent addSubview:view];
    return view;
#else
    Q_UNUSED(widget);
    Q_UNUSED(widgetPrivate);
    if(!widget_class) {
        OSStatus err = HIObjectRegisterSubclass(kObjectQWidget, kHIViewClassID, 0, make_widget_eventUPP(),
                                                GetEventTypeCount(widget_events), widget_events,
                                                0, &widget_class);
        if (err && err != hiObjectClassExistsErr)
            qWarning("QWidget: Internal error (%d)", __LINE__);
    }
    HIViewRef ret = 0;
    if(HIObjectCreate(kObjectQWidget, 0, (HIObjectRef*)&ret) != noErr)
        qWarning("QWidget: Internal error (%d)", __LINE__);
    if(ret && parent)
        HIViewAddSubview(parent, ret);
    return ret;
#endif
}

void qt_mac_unregister_widget()
{
#ifndef QT_MAC_USE_COCOA
    HIObjectUnregisterClass(widget_class);
    widget_class = 0;
#endif
}

void QWidgetPrivate::toggleDrawers(bool visible)
{
    for (int i = 0; i < children.size(); ++i) {
        register QObject *object = children.at(i);
        if (!object->isWidgetType())
            continue;
        QWidget *widget = static_cast<QWidget*>(object);
        if(qt_mac_is_macdrawer(widget)) {
            if(visible) {
                if (!widget->testAttribute(Qt::WA_WState_ExplicitShowHide))
                    widget->show();
            } else {
                widget->hide();
                widget->setAttribute(Qt::WA_WState_ExplicitShowHide, false);
            }
        }
    }
}

/*****************************************************************************
  QWidgetPrivate member functions
 *****************************************************************************/
bool QWidgetPrivate::qt_mac_update_sizer(QWidget *w, int up)
{
    if(!w || !w->isWindow())
        return false;

    QTLWExtra *topData = w->d_func()->topData();
    QWExtra *extraData = w->d_func()->extraData();
    topData->resizer += up;
    OSWindowRef windowRef = qt_mac_window_for(OSViewRef(w->winId()));
    {
#ifndef QT_MAC_USE_COCOA
        WindowClass wclass;
        GetWindowClass(windowRef, &wclass);
        if(!(GetAvailableWindowAttributes(wclass) & kWindowResizableAttribute))
            return true;
#endif
    }
    bool remove_grip = (topData->resizer || (w->windowFlags() & Qt::FramelessWindowHint)
                        || (extraData->maxw && extraData->maxh &&
                            extraData->maxw == extraData->minw && extraData->maxh == extraData->minh));

#ifndef QT_MAC_USE_COCOA
    WindowAttributes attr;
    GetWindowAttributes(windowRef, &attr);
    if(remove_grip) {
        if(attr & kWindowResizableAttribute) {
            ChangeWindowAttributes(qt_mac_window_for(w), kWindowNoAttributes,
                                   kWindowResizableAttribute);
            ReshapeCustomWindow(qt_mac_window_for(w));
        }
    } else if(!(attr & kWindowResizableAttribute)) {
        ChangeWindowAttributes(windowRef, kWindowResizableAttribute,
                               kWindowNoAttributes);
        ReshapeCustomWindow(windowRef);
    }
#else
    [windowRef setShowsResizeIndicator:!remove_grip];
#endif
    return true;
}

void QWidgetPrivate::qt_clean_root_win()
{
#ifdef QT_MAC_USE_COCOA
    [qt_root_win release];
#else
    if(!qt_root_win)
        return;
    CFRelease(qt_root_win);
#endif
    qt_root_win = 0;
}

bool QWidgetPrivate::qt_create_root_win()
{
    if(qt_root_win)
        return false;
    const QSize desktopSize = qt_mac_desktopSize();
    QRect desktopRect(QPoint(0, 0), desktopSize);
#ifdef QT_MAC_USE_COCOA
    qt_root_win = qt_mac_create_window(0, kOverlayWindowClass, NSBorderlessWindowMask, desktopRect);
#else
    WindowAttributes wattr = (kWindowCompositingAttribute | kWindowStandardHandlerAttribute);
    qt_root_win = qt_mac_create_window(0, kOverlayWindowClass, wattr, desktopRect);
#endif
    if(!qt_root_win)
        return false;
    qAddPostRoutine(qt_clean_root_win);
    return true;
}

bool QWidgetPrivate::qt_recreate_root_win()
{
    if(!qt_root_win) //sanity check
        return false;
    //store old
    OSWindowRef old_root_win = qt_root_win;
    //recreate
    qt_root_win = 0;
    qt_create_root_win();
    //cleanup old window
#ifdef QT_MAC_USE_COCOA
    [old_root_win release];
#else
    CFRelease(old_root_win);
#endif
    return true;
}

bool QWidgetPrivate::qt_widget_rgn(QWidget *widget, short wcode, RgnHandle rgn, bool force = false)
{
    bool ret = false;
#ifndef QT_MAC_USE_COCOA
    switch(wcode) {
    case kWindowStructureRgn: {
        if(widget) {
            if(widget->d_func()->extra && !widget->d_func()->extra->mask.isEmpty()) {
                QRegion rin = qt_mac_convert_mac_region(rgn);
                if(!rin.isEmpty()) {
                    QPoint rin_tl = rin.boundingRect().topLeft(); //in offset
                    rin.translate(-rin_tl.x(), -rin_tl.y()); //bring into same space as below
                    QRegion mask = widget->d_func()->extra->mask;
                    Qt::WindowFlags flags = widget->windowFlags();
                    if(widget->isWindow()
                       && !(flags & Qt::FramelessWindowHint
                            || (flags & Qt::CustomizeWindowHint && !(flags & Qt::WindowTitleHint)))) {
                        QRegion title;
                        {
                            QMacSmartQuickDrawRegion rgn(qt_mac_get_rgn());
                            GetWindowRegion(qt_mac_window_for(widget), kWindowTitleBarRgn, rgn);
                            title = qt_mac_convert_mac_region(rgn);
                        }
                        QRect br = title.boundingRect();
                        mask.translate(0, br.height()); //put the mask 'under' the title bar..
                        title.translate(-br.x(), -br.y());
                        mask += title;
                    }

                    QRegion cr = rin & mask;
                    cr.translate(rin_tl.x(), rin_tl.y()); //translate back to incoming space
                    CopyRgn(QMacSmartQuickDrawRegion(cr.toQDRgn()), rgn);
                }
                ret = true;
            } else if(force) {
                QRegion cr(widget->geometry());
                CopyRgn(QMacSmartQuickDrawRegion(cr.toQDRgn()), rgn);
                ret = true;
            }
        }
        break; }
    default: break;
    }
    //qDebug() << widget << ret << wcode << qt_mac_convert_mac_region(rgn);
#else
    Q_UNUSED(widget);
    Q_UNUSED(wcode);
    Q_UNUSED(rgn);
    Q_UNUSED(force);
#endif
    return ret;
}

/*****************************************************************************
  QWidget member functions
 *****************************************************************************/
void QWidgetPrivate::determineWindowClass()
{
    Q_Q(QWidget);
#ifndef QT_MAC_USE_COCOA
// ### COCOA:Interleave these better!

    const Qt::WindowType type = q->windowType();
    Qt::WindowFlags &flags = data.window_flags;
    const bool popup = (type == Qt::Popup);
    if (type == Qt::ToolTip || type == Qt::SplashScreen || popup)
        flags |= Qt::FramelessWindowHint;

    WindowClass wclass = kSheetWindowClass;
    if(qt_mac_is_macdrawer(q))
        wclass = kDrawerWindowClass;
    else if (q->testAttribute(Qt::WA_ShowModal) && flags & Qt::CustomizeWindowHint)
        wclass = kDocumentWindowClass;
    else if(popup || (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5 && type == Qt::SplashScreen))
        wclass = kModalWindowClass;
    else if(q->testAttribute(Qt::WA_ShowModal))
        wclass = kMovableModalWindowClass;
    else if(type == Qt::ToolTip)
        wclass = kHelpWindowClass;
    else if(type == Qt::Tool || (QSysInfo::MacintoshVersion < QSysInfo::MV_10_5
                                 && type == Qt::SplashScreen))
        wclass = kFloatingWindowClass;
    else
        wclass = kDocumentWindowClass;

    WindowGroupRef grp = 0;
    WindowAttributes wattr = (kWindowCompositingAttribute | kWindowStandardHandlerAttribute);
    if (q->testAttribute(Qt::WA_MacFrameworkScaled))
        wattr |= kWindowFrameworkScaledAttribute;
    if(qt_mac_is_macsheet(q)) {
        //grp = GetWindowGroupOfClass(kMovableModalWindowClass);
        wclass = kSheetWindowClass;
    } else {
        grp = GetWindowGroupOfClass(wclass);
        // Shift things around a bit to get the correct window class based on the presence
        // (or lack) of the border.
        bool customize = flags & Qt::CustomizeWindowHint;
        bool framelessWindow = (flags & Qt::FramelessWindowHint || (customize && !(flags & Qt::WindowTitleHint)));
        if (framelessWindow) {
            if(wclass == kDocumentWindowClass) {
                if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
                    wattr |= kWindowNoTitleBarAttribute;
                else
                    wclass = kPlainWindowClass;
            } else if(wclass == kFloatingWindowClass) {
                if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
                    wattr |= kWindowNoTitleBarAttribute;
                else
                    wclass = kToolbarWindowClass;
            } else if (wclass  == kMovableModalWindowClass) {
                    wclass = kModalWindowClass;
            }
        } else {
            if(wclass != kModalWindowClass)
                wattr |= kWindowResizableAttribute;
        }
        // Only add extra decorations (well, buttons) for widgets that can have them
        // and have an actual border we can put them on.
        if(wclass != kModalWindowClass && wclass != kMovableModalWindowClass
                && wclass != kSheetWindowClass && wclass != kPlainWindowClass
                && !framelessWindow && wclass != kDrawerWindowClass
                && wclass != kHelpWindowClass) {
            if (flags & Qt::WindowMaximizeButtonHint)
                wattr |= kWindowFullZoomAttribute;
            if (flags & Qt::WindowMinimizeButtonHint)
                wattr |= kWindowCollapseBoxAttribute;
            if (flags & Qt::WindowSystemMenuHint || flags & Qt::WindowCloseButtonHint)
                wattr |= kWindowCloseBoxAttribute;
            if (flags & Qt::MacWindowToolBarButtonHint)
                wattr |= kWindowToolbarButtonAttribute;
        } else {
            // Clear these hints so that we aren't call them on invalid windows
            flags &= ~(Qt::WindowMaximizeButtonHint | Qt::WindowMinimizeButtonHint
                       | Qt::WindowCloseButtonHint | Qt::WindowSystemMenuHint);
        }
    }
    if((popup || type == Qt::Tool) && !q->isModal())
        wattr |= kWindowHideOnSuspendAttribute;
    wattr |= kWindowLiveResizeAttribute;

#ifdef DEBUG_WINDOW_CREATE
#define ADD_DEBUG_WINDOW_NAME(x) { x, #x }
    struct {
        UInt32 tag;
        const char *name;
    } known_attribs[] = {
        ADD_DEBUG_WINDOW_NAME(kWindowCompositingAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowStandardHandlerAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowMetalAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowHideOnSuspendAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowStandardHandlerAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowCollapseBoxAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowHorizontalZoomAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowVerticalZoomAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowResizableAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowNoActivatesAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowNoUpdatesAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowOpaqueForEventsAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowLiveResizeAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowCloseBoxAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowHideOnSuspendAttribute),
        { 0, 0 }
    }, known_classes[] = {
        ADD_DEBUG_WINDOW_NAME(kHelpWindowClass),
        ADD_DEBUG_WINDOW_NAME(kPlainWindowClass),
        ADD_DEBUG_WINDOW_NAME(kDrawerWindowClass),
        ADD_DEBUG_WINDOW_NAME(kUtilityWindowClass),
        ADD_DEBUG_WINDOW_NAME(kToolbarWindowClass),
        ADD_DEBUG_WINDOW_NAME(kSheetWindowClass),
        ADD_DEBUG_WINDOW_NAME(kFloatingWindowClass),
        ADD_DEBUG_WINDOW_NAME(kUtilityWindowClass),
        ADD_DEBUG_WINDOW_NAME(kDocumentWindowClass),
        ADD_DEBUG_WINDOW_NAME(kToolbarWindowClass),
        ADD_DEBUG_WINDOW_NAME(kMovableModalWindowClass),
        ADD_DEBUG_WINDOW_NAME(kModalWindowClass),
        { 0, 0 }
    };
    qDebug("Qt: internal: ************* Creating new window %p (%s::%s)", q, q->metaObject()->className(),
            q->objectName().toLocal8Bit().constData());
    bool found_class = false;
    for(int i = 0; known_classes[i].name; i++) {
        if(wclass == known_classes[i].tag) {
            found_class = true;
            qDebug("Qt: internal: ** Class: %s", known_classes[i].name);
            break;
        }
    }
    if(!found_class)
        qDebug("Qt: internal: !! Class: Unknown! (%d)", (int)wclass);
    if(wattr) {
        WindowAttributes tmp_wattr = wattr;
        qDebug("Qt: internal: ** Attributes:");
        for(int i = 0; tmp_wattr && known_attribs[i].name; i++) {
            if((tmp_wattr & known_attribs[i].tag) == known_attribs[i].tag) {
                tmp_wattr ^= known_attribs[i].tag;
                qDebug("Qt: internal: * %s %s", known_attribs[i].name,
                        (GetAvailableWindowAttributes(wclass) & known_attribs[i].tag) ? "" : "(*)");
            }
        }
        if(tmp_wattr)
            qDebug("Qt: internal: !! Attributes: Unknown (%d)", (int)tmp_wattr);
    }
#endif

    /* Just to be extra careful we will change to the kUtilityWindowClass if the
       requested attributes cannot be used */
    if((GetAvailableWindowAttributes(wclass) & wattr) != wattr) {
        WindowClass tmp_class = wclass;
        if(wclass == kToolbarWindowClass || wclass == kUtilityWindowClass)
            wclass = kFloatingWindowClass;
        if(tmp_class != wclass) {
            if(!grp)
                grp = GetWindowGroupOfClass(wclass);
            wclass = tmp_class;
        }
    }
    topData()->wclass = wclass;
    topData()->wattr = wattr;
#else
    const Qt::WindowType type = q->windowType();
    Qt::WindowFlags &flags = data.window_flags;
    const bool popup = (type == Qt::Popup);
    if (type == Qt::ToolTip || type == Qt::SplashScreen || popup)
        flags |= Qt::FramelessWindowHint;

    WindowClass wclass = kSheetWindowClass;
    if(qt_mac_is_macdrawer(q))
        wclass = kDrawerWindowClass;
    else if (q->testAttribute(Qt::WA_ShowModal) && flags & Qt::CustomizeWindowHint)
        wclass = kDocumentWindowClass;
    else if(popup || (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5 && type == Qt::SplashScreen))
        wclass = kModalWindowClass;
    else if(q->testAttribute(Qt::WA_ShowModal) || type == Qt::Dialog)
        wclass = kMovableModalWindowClass;
    else if(type == Qt::ToolTip)
        wclass = kHelpWindowClass;
    else if(type == Qt::Tool || (QSysInfo::MacintoshVersion < QSysInfo::MV_10_5
                                 && type == Qt::SplashScreen))
        wclass = kFloatingWindowClass;
    else
        wclass = kDocumentWindowClass;

    WindowAttributes wattr = NSBorderlessWindowMask;
    if(qt_mac_is_macsheet(q)) {
        //grp = GetWindowGroupOfClass(kMovableModalWindowClass);
        wclass = kSheetWindowClass;
        wattr = NSTitledWindowMask | NSResizableWindowMask;
    } else {
#ifndef QT_MAC_USE_COCOA
        grp = GetWindowGroupOfClass(wclass);
#endif
        // Shift things around a bit to get the correct window class based on the presence
        // (or lack) of the border.
        bool customize = flags & Qt::CustomizeWindowHint;
        bool framelessWindow = (flags & Qt::FramelessWindowHint || (customize && !(flags & Qt::WindowTitleHint)));
        if (framelessWindow) {
            if (wclass == kDocumentWindowClass) {
                wclass = kSimpleWindowClass;
            } else if (wclass == kFloatingWindowClass) {
                wclass = kToolbarWindowClass;
            } else if (wclass  == kMovableModalWindowClass) {
                wclass  = kModalWindowClass;
            }
        } else {
            wattr |= NSTitledWindowMask;
            if (wclass != kModalWindowClass)
                wattr |= NSResizableWindowMask;
        }
        // Only add extra decorations (well, buttons) for widgets that can have them
        // and have an actual border we can put them on.
        if (wclass != kModalWindowClass
                && wclass != kSheetWindowClass && wclass != kPlainWindowClass
                && !framelessWindow && wclass != kDrawerWindowClass
                && wclass != kHelpWindowClass) {
            if (flags & Qt::WindowMinimizeButtonHint)
                wattr |= NSMiniaturizableWindowMask;
            if (flags & Qt::WindowSystemMenuHint || flags & Qt::WindowCloseButtonHint)
                wattr |= NSClosableWindowMask;
        } else {
            // Clear these hints so that we aren't call them on invalid windows
            flags &= ~(Qt::WindowMaximizeButtonHint | Qt::WindowMinimizeButtonHint
                       | Qt::WindowCloseButtonHint | Qt::WindowSystemMenuHint);
        }
    }
    if (q->testAttribute(Qt::WA_MacBrushedMetal))
        wattr |= NSTexturedBackgroundWindowMask;

#ifdef DEBUG_WINDOW_CREATE
#define ADD_DEBUG_WINDOW_NAME(x) { x, #x }
    struct {
        UInt32 tag;
        const char *name;
    } known_attribs[] = {
        ADD_DEBUG_WINDOW_NAME(kWindowCompositingAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowStandardHandlerAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowMetalAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowHideOnSuspendAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowStandardHandlerAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowCollapseBoxAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowHorizontalZoomAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowVerticalZoomAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowResizableAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowNoActivatesAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowNoUpdatesAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowOpaqueForEventsAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowLiveResizeAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowCloseBoxAttribute),
        ADD_DEBUG_WINDOW_NAME(kWindowHideOnSuspendAttribute),
        { 0, 0 }
    }, known_classes[] = {
        ADD_DEBUG_WINDOW_NAME(kHelpWindowClass),
        ADD_DEBUG_WINDOW_NAME(kPlainWindowClass),
        ADD_DEBUG_WINDOW_NAME(kDrawerWindowClass),
        ADD_DEBUG_WINDOW_NAME(kUtilityWindowClass),
        ADD_DEBUG_WINDOW_NAME(kToolbarWindowClass),
        ADD_DEBUG_WINDOW_NAME(kSheetWindowClass),
        ADD_DEBUG_WINDOW_NAME(kFloatingWindowClass),
        ADD_DEBUG_WINDOW_NAME(kUtilityWindowClass),
        ADD_DEBUG_WINDOW_NAME(kDocumentWindowClass),
        ADD_DEBUG_WINDOW_NAME(kToolbarWindowClass),
        ADD_DEBUG_WINDOW_NAME(kMovableModalWindowClass),
        ADD_DEBUG_WINDOW_NAME(kModalWindowClass),
        { 0, 0 }
    };
    qDebug("Qt: internal: ************* Creating new window %p (%s::%s)", q, q->metaObject()->className(),
            q->objectName().toLocal8Bit().constData());
    bool found_class = false;
    for(int i = 0; known_classes[i].name; i++) {
        if(wclass == known_classes[i].tag) {
            found_class = true;
            qDebug("Qt: internal: ** Class: %s", known_classes[i].name);
            break;
        }
    }
    if(!found_class)
        qDebug("Qt: internal: !! Class: Unknown! (%d)", (int)wclass);
    if(wattr) {
        WindowAttributes tmp_wattr = wattr;
        qDebug("Qt: internal: ** Attributes:");
        for(int i = 0; tmp_wattr && known_attribs[i].name; i++) {
            if((tmp_wattr & known_attribs[i].tag) == known_attribs[i].tag) {
                tmp_wattr ^= known_attribs[i].tag;
                qDebug("Qt: internal: * %s %s", known_attribs[i].name,
                        (GetAvailableWindowAttributes(wclass) & known_attribs[i].tag) ? "" : "(*)");
            }
        }
        if(tmp_wattr)
            qDebug("Qt: internal: !! Attributes: Unknown (%d)", (int)tmp_wattr);
    }
#endif

#ifndef QT_MAC_USE_COCOA
    /* Just to be extra careful we will change to the kUtilityWindowClass if the
       requested attributes cannot be used */
    if((GetAvailableWindowAttributes(wclass) & wattr) != wattr) {
        WindowClass tmp_class = wclass;
        if(wclass == kToolbarWindowClass || wclass == kUtilityWindowClass)
            wclass = kFloatingWindowClass;
        if(tmp_class != wclass) {
            if(!grp)
                grp = GetWindowGroupOfClass(wclass);
            wclass = tmp_class;
        }
    }
#endif
#endif
    topData()->wclass = wclass;
    topData()->wattr = wattr;
}

#ifndef QT_MAC_USE_COCOA  // This is handled in Cocoa via our category.
void QWidgetPrivate::initWindowPtr()
{
    Q_Q(QWidget);
    OSWindowRef windowRef = qt_mac_window_for(qt_mac_nativeview_for(q)); //do not create!
    if(!windowRef)
        return;
    QWidget *window = q->window(), *oldWindow = 0;
    if(GetWindowProperty(windowRef, kWidgetCreatorQt, kWidgetPropertyQWidget, sizeof(oldWindow), 0, &oldWindow) == noErr) {
        Q_ASSERT(window == oldWindow);
        return;
    }

    if(SetWindowProperty(windowRef, kWidgetCreatorQt, kWidgetPropertyQWidget, sizeof(window), &window) != noErr)
        qWarning("Qt:Internal error (%s:%d)", __FILE__, __LINE__); //no real way to recover
    if(!q->windowType() != Qt::Desktop) { //setup an event callback handler on the window
        InstallWindowEventHandler(windowRef, make_win_eventUPP(), GetEventTypeCount(window_events),
                window_events, static_cast<void *>(qApp), &window_event);
    }
}

void QWidgetPrivate::finishCreateWindow_sys_Carbon(OSWindowRef windowRef)
{
    Q_Q(QWidget);
    const Qt::WindowType type = q->windowType();
    Qt::WindowFlags &flags = data.window_flags;
    QWidget *parentWidget = q->parentWidget();

    const bool desktop = (type == Qt::Desktop);
    const bool dialog = (type == Qt::Dialog
                         || type == Qt::Sheet
                         || type == Qt::Drawer
                         || (flags & Qt::MSWindowsFixedSizeDialogHint));
    QTLWExtra *topExtra = topData();
    quint32 wattr = topExtra->wattr;
    if (!desktop)
        SetAutomaticControlDragTrackingEnabledForWindow(windowRef, true);
    HIWindowChangeFeatures(windowRef, kWindowCanCollapse, 0);
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
        if (wattr & kWindowHideOnSuspendAttribute)
            HIWindowChangeAvailability(windowRef, kHIWindowExposeHidden, 0);
        else
            HIWindowChangeAvailability(windowRef, 0, kHIWindowExposeHidden);
    }
#endif
    if ((flags & Qt::WindowStaysOnTopHint))
        ChangeWindowAttributes(windowRef, kWindowNoAttributes, kWindowHideOnSuspendAttribute);
    if (qt_mac_is_macdrawer(q) && parentWidget)
        SetDrawerParent(windowRef, qt_mac_window_for (parentWidget));
    if (topExtra->group) {
        qt_mac_release_window_group(topExtra->group);
        topExtra->group = 0;
    }
    if (type == Qt::ToolTip)
        qt_mac_set_window_group_to_tooltip(windowRef);
    else if (type == Qt::Popup && (flags & Qt::WindowStaysOnTopHint))
        qt_mac_set_window_group_to_popup(windowRef);
    else if (flags & Qt::WindowStaysOnTopHint)
        qt_mac_set_window_group_to_stays_on_top(windowRef, type);
    else if (dialog)
        SetWindowGroup(windowRef, GetWindowGroupOfClass(kMovableModalWindowClass));

#ifdef DEBUG_WINDOW_CREATE
    if (WindowGroupRef grpf = GetWindowGroup(windowRef)) {
        QCFString cfname;
        CopyWindowGroupName(grpf, &cfname);
        SInt32 lvl;
        GetWindowGroupLevel(grpf, &lvl);
        const char *from = "Default";
        if (topExtra && grpf == topData()->group)
            from = "Created";
        else if (grpf == grp)
            from = "Copied";
        qDebug("Qt: internal: With window group '%s' [%p] @ %d: %s",
                static_cast<QString>(cfname).toLatin1().constData(), grpf, (int)lvl, from);
    } else {
        qDebug("Qt: internal: No window group!!!");
    }
    HIWindowAvailability hi_avail = 0;
    if (HIWindowGetAvailability(windowRef, &hi_avail) == noErr) {
        struct {
            UInt32 tag;
            const char *name;
        } known_avail[] = {
            ADD_DEBUG_WINDOW_NAME(kHIWindowExposeHidden),
            { 0, 0 }
        };
        qDebug("Qt: internal: ** HIWindowAvailibility:");
        for (int i = 0; hi_avail && known_avail[i].name; i++) {
            if ((hi_avail & known_avail[i].tag) == known_avail[i].tag) {
                hi_avail ^= known_avail[i].tag;
                qDebug("Qt: internal: * %s", known_avail[i].name);
            }
        }
        if (hi_avail)
            qDebug("Qt: internal: !! Attributes: Unknown (%d)", (int)hi_avail);
    }
#undef ADD_DEBUG_WINDOW_NAME
#endif
    if (extra && !extra->mask.isEmpty())
        ReshapeCustomWindow(windowRef);
    SetWindowModality(windowRef, kWindowModalityNone, 0);
    if (qt_mac_is_macdrawer(q))
        SetDrawerOffsets(windowRef, 0.0, 25.0);
    data.fstrut_dirty = true; // when we create a toplevel widget, the frame strut should be dirty
    HIViewRef hiview = (HIViewRef)data.winid;
    HIViewRef window_hiview = qt_mac_get_contentview_for(windowRef);
    if(!hiview) {
        hiview = qt_mac_create_widget(q, this, window_hiview);
        setWinId((WId)hiview);
    } else {
        HIViewAddSubview(window_hiview, hiview);
    }
    if (hiview) {
        Rect win_rect;
        GetWindowBounds(qt_mac_window_for (window_hiview), kWindowContentRgn, &win_rect);
        HIRect bounds = CGRectMake(0, 0, win_rect.right-win_rect.left, win_rect.bottom-win_rect.top);
        HIViewSetFrame(hiview, &bounds);
        HIViewSetVisible(hiview, true);
        if (q->testAttribute(Qt::WA_DropSiteRegistered))
            registerDropSite(true);
        transferChildren();
    }
    initWindowPtr();

    if (topExtra->posFromMove) {
        updateFrameStrut();
        const QRect &fStrut = frameStrut();
        Rect r;
        SetRect(&r, data.crect.left(), data.crect.top(), data.crect.right() + 1, data.crect.bottom() + 1);
        SetRect(&r, r.left + fStrut.left(), r.top + fStrut.top(),
                    (r.left + fStrut.left() + data.crect.width()) - fStrut.right(),
                    (r.top + fStrut.top() + data.crect.height()) - fStrut.bottom());
        SetWindowBounds(windowRef, kWindowContentRgn, &r);
        topExtra->posFromMove = false;
    }

    if (q->testAttribute(Qt::WA_WState_WindowOpacitySet)){
        q->setWindowOpacity(topExtra->opacity / 255.0f);
    } else if (qt_mac_is_macsheet(q)){
        SetThemeWindowBackground(qt_mac_window_for(q), kThemeBrushSheetBackgroundTransparent, true);
        CGFloat alpha = 0;
        GetWindowAlpha(qt_mac_window_for(q), &alpha);
        if (alpha == 1){
            // For some reason the 'SetThemeWindowBackground' does not seem
            // to work. So we do this little hack until it hopefully starts to
            // work in newer versions of mac OS.
            q->setWindowOpacity(0.95f);
            q->setAttribute(Qt::WA_WState_WindowOpacitySet, false);
        }
    } else{
        // If the window has been recreated after beeing e.g. a sheet,
        // make sure that we don't report a faulty opacity:
        q->setWindowOpacity(1.0f);
        q->setAttribute(Qt::WA_WState_WindowOpacitySet, false);
    }

    // Since we only now have a window, sync our state.
    macUpdateHideOnSuspend();
    macUpdateOpaqueSizeGrip();
    macUpdateMetalAttribute();
    macUpdateIgnoreMouseEvents();
    setWindowTitle_helper(extra->topextra->caption);
    setWindowIconText_helper(extra->topextra->iconText);
    setWindowFilePath_helper(extra->topextra->filePath);
    setWindowModified_sys(q->isWindowModified());
    updateFrameStrut();
    qt_mac_update_sizer(q);
}
#else  // QT_MAC_USE_COCOA
void QWidgetPrivate::finishCreateWindow_sys_Cocoa(void * /*NSWindow * */ voidWindowRef)
{
    Q_Q(QWidget);
    QMacCocoaAutoReleasePool pool;
    NSWindow *windowRef = static_cast<NSWindow *>(voidWindowRef);
    const Qt::WindowType type = q->windowType();
    Qt::WindowFlags &flags = data.window_flags;
    QWidget *parentWidget = q->parentWidget();

    const bool popup = (type == Qt::Popup);
    const bool dialog = (type == Qt::Dialog
                         || type == Qt::Sheet
                         || type == Qt::Drawer
                         || (flags & Qt::MSWindowsFixedSizeDialogHint));
    QTLWExtra *topExtra = topData();

    if ((popup || type == Qt::Tool || type == Qt::ToolTip) && !q->isModal()) {
        [windowRef setHidesOnDeactivate:YES];
        [windowRef setHasShadow:YES];
    }
    Q_UNUSED(parentWidget);
    Q_UNUSED(dialog);

    data.fstrut_dirty = true; // when we create a toplevel widget, the frame strut should be dirty
    OSViewRef nsview = (OSViewRef)data.winid;
    OSViewRef window_contentview = qt_mac_get_contentview_for(windowRef);
    if (!nsview) {
        nsview = qt_mac_create_widget(q, this, window_contentview);
        setWinId(WId(nsview));
    } else {
        [window_contentview addSubview:nsview];
    }
    if (nsview) {
        NSRect bounds = [window_contentview bounds];
        [nsview setFrame:bounds];
        [nsview setHidden:NO];
        if (q->testAttribute(Qt::WA_DropSiteRegistered))
            registerDropSite(true);
        transferChildren();
    }

    if (topExtra->posFromMove) {
        updateFrameStrut();

        const QRect &fStrut = frameStrut();
        const QRect &crect = data.crect;
        const QRect frameRect(QPoint(crect.left(), crect.top()),
                              QSize(fStrut.left() + fStrut.right() + crect.width(),
                                    fStrut.top() + fStrut.bottom() + crect.height()));
        NSRect cocoaFrameRect = NSMakeRect(frameRect.x(), flipYCoordinate(frameRect.bottom() + 1),
                                           frameRect.width(), frameRect.height());
        [windowRef setFrame:cocoaFrameRect display:NO];
        topExtra->posFromMove = false;
    }

    if (q->testAttribute(Qt::WA_WState_WindowOpacitySet)){
        q->setWindowOpacity(topExtra->opacity / 255.0f);
    } else if (qt_mac_is_macsheet(q)){
        CGFloat alpha = [qt_mac_window_for(q) alphaValue];
        if (alpha >= 1.0) {
            q->setWindowOpacity(0.95f);
            q->setAttribute(Qt::WA_WState_WindowOpacitySet, false);
        }
    } else{
        // If the window has been recreated after beeing e.g. a sheet,
        // make sure that we don't report a faulty opacity:
        q->setWindowOpacity(1.0f);
        q->setAttribute(Qt::WA_WState_WindowOpacitySet, false);
    }

    macUpdateHideOnSuspend();
    macUpdateOpaqueSizeGrip();
    macUpdateIgnoreMouseEvents();
    setWindowTitle_helper(extra->topextra->caption);
    setWindowIconText_helper(extra->topextra->iconText);
    setWindowModified_sys(q->isWindowModified());
    updateFrameStrut();
    syncCocoaMask();
    macUpdateIsOpaque();
    qt_mac_update_sizer(q);
}

#endif // QT_MAC_USE_COCOA

/*
 Recreates widget window. Useful if immutable
 properties for it has changed.
 */
void QWidgetPrivate::recreateMacWindow()
{
    Q_Q(QWidget);
    OSViewRef myView = qt_mac_nativeview_for(q);
    OSWindowRef oldWindow = qt_mac_window_for(myView);
#ifndef QT_MAC_USE_COCOA
    HIViewRemoveFromSuperview(myView);
    determineWindowClass();
    createWindow_sys();
    if (QMainWindowLayout *mwl = qobject_cast<QMainWindowLayout *>(q->layout())) {
        mwl->updateHIToolBarStatus();
    }

    if (IsWindowVisible(oldWindow))
        show_sys();
#else
    QMacCocoaAutoReleasePool pool;
    [myView removeFromSuperview];
    determineWindowClass();
    createWindow_sys();
    if (NSToolbar *toolbar = [oldWindow toolbar]) {
        OSWindowRef newWindow = qt_mac_window_for(myView);
        [newWindow setToolbar:toolbar];
        [toolbar setVisible:[toolbar isVisible]];
    }
    if ([oldWindow isVisible]){
        if ([oldWindow isSheet])
            [NSApp endSheet:oldWindow];
        [oldWindow orderOut:oldWindow];
        show_sys();
    }
#endif // QT_MAC_USE_COCOA

    // Release the window after creating the new window, because releasing it early
    // may cause the app to quit ("close on last window closed attribute")
    qt_mac_destructWindow(oldWindow);
}

void QWidgetPrivate::createWindow_sys()
{
    Q_Q(QWidget);
    Qt::WindowFlags &flags = data.window_flags;
    QWidget *parentWidget = q->parentWidget();

    QTLWExtra *topExtra = topData();
    if (topExtra->embedded)
        return;  // Simply return because this view "is" the top window.
    quint32 wattr = topExtra->wattr;

    if(parentWidget && (parentWidget->window()->windowFlags() & Qt::WindowStaysOnTopHint)) // If our parent has Qt::WStyle_StaysOnTop, so must we
        flags |= Qt::WindowStaysOnTopHint;

    data.fstrut_dirty = true;

    OSWindowRef windowRef = qt_mac_create_window(q, topExtra->wclass, wattr, data.crect);
    if (windowRef == 0)
        qWarning("QWidget: Internal error: %s:%d: If you reach this error please contact Trolltech and include the\n"
                "      WidgetFlags used in creating the widget.", __FILE__, __LINE__);
#ifndef QT_MAC_USE_COCOA
    finishCreateWindow_sys_Carbon(windowRef);
#else
    finishCreateWindow_sys_Cocoa(windowRef);
#endif
}

void QWidgetPrivate::create_sys(WId window, bool initializeWindow, bool destroyOldWindow)
{
    Q_Q(QWidget);
    OSViewRef destroyid = 0;
#ifndef QT_MAC_USE_COCOA
    window_event = 0;
#endif

    Qt::WindowType type = q->windowType();
    Qt::WindowFlags flags = data.window_flags;
    QWidget *parentWidget = q->parentWidget();

    bool topLevel = (flags & Qt::Window);
    bool popup = (type == Qt::Popup);
    bool dialog = (type == Qt::Dialog
                   || type == Qt::Sheet
                   || type == Qt::Drawer
                   || (flags & Qt::MSWindowsFixedSizeDialogHint));
    bool desktop = (type == Qt::Desktop);

    // Determine this early for top-levels so, we can use it later.
    if (topLevel)
        determineWindowClass();

    if (desktop) {
        QSize desktopSize = qt_mac_desktopSize();
        q->setAttribute(Qt::WA_WState_Visible);
        data.crect.setRect(0, 0, desktopSize.width(), desktopSize.height());
        dialog = popup = false;                  // force these flags off
    } else {
        q->setAttribute(Qt::WA_WState_Visible, false);

        if (topLevel && (type != Qt::Drawer)) {
            if (QDesktopWidget *dsk = QApplication::desktop()) { // calc pos/size from screen
                const bool wasResized = q->testAttribute(Qt::WA_Resized);
                const bool wasMoved = q->testAttribute(Qt::WA_Moved);
                int deskn = dsk->primaryScreen();
                if (parentWidget && parentWidget->windowType() != Qt::Desktop)
                    deskn = dsk->screenNumber(parentWidget);
                QRect screenGeo = dsk->screenGeometry(deskn);
                if (!wasResized) {
#ifndef QT_MAC_USE_COCOA
                    data.crect.setSize(QSize(screenGeo.width()/2, 4*screenGeo.height()/10));
#else
                    NSRect newRect = [NSWindow frameRectForContentRect:NSMakeRect(0, 0,
                                                                  screenGeo.width() / 2.,
                                                                  4 * screenGeo.height() / 10.)
                                        styleMask:topData()->wattr];
                    data.crect.setSize(QSize(newRect.size.width, newRect.size.height));
#endif
                    // Constrain to minimums and maximums we've set
                    if (extra->minw > 0)
                        data.crect.setWidth(qMax(extra->minw, data.crect.width()));
                    if (extra->minh > 0)
                        data.crect.setHeight(qMax(extra->minh, data.crect.height()));
                    if (extra->maxw > 0)
                        data.crect.setWidth(qMin(extra->maxw, data.crect.width()));
                    if (extra->maxh > 0)
                        data.crect.setHeight(qMin(extra->maxh, data.crect.height()));
                }
                if (!wasMoved && !q->testAttribute(Qt::WA_DontShowOnScreen))
                    data.crect.moveTopLeft(QPoint(screenGeo.width()/4,
                                                  3 * screenGeo.height() / 10));
            }
        }
    }


    if(!window)                              // always initialize
        initializeWindow=true;

    hd = 0;
    if(window) {                                // override the old window (with a new NSView)
        OSViewRef nativeView = OSViewRef(window);
        OSViewRef parent = 0;
#ifndef QT_MAC_USE_COCOA
        CFRetain(nativeView);
#else
        [nativeView retain];
#endif
        if (destroyOldWindow)
            destroyid = qt_mac_nativeview_for(q);
        bool transfer = false;
        setWinId((WId)nativeView);
#ifndef QT_MAC_USE_COCOA
#ifndef HIViewInstallEventHandler
        // Macro taken from the CarbonEvents Header on Tiger
#define HIViewInstallEventHandler( target, handler, numTypes, list, userData, outHandlerRef ) \
               InstallEventHandler( HIObjectGetEventTarget( (HIObjectRef) (target) ), (handler), (numTypes), (list), (userData), (outHandlerRef) )
#endif
        HIViewInstallEventHandler(nativeView, make_widget_eventUPP(), GetEventTypeCount(widget_events), widget_events, 0, 0);
#endif
        if(topLevel) {
            for(int i = 0; i < 2; ++i) {
                if(i == 1) {
                    if(!initializeWindow)
                        break;
                    createWindow_sys();
                }
                if(OSWindowRef windowref = qt_mac_window_for(nativeView)) {
#ifndef QT_MAC_USE_COCOA
                    CFRetain(windowref);
#else
                    [windowref retain];
#endif
                    if (initializeWindow) {
                        parent = qt_mac_get_contentview_for(windowref);
                    } else {
#ifndef QT_MAC_USE_COCOA
                        parent = HIViewGetSuperview(nativeView);
#else
                        parent = [nativeView superview];
#endif
                    }
                    break;
                }
            }
            if(!parent)
                transfer = true;
        } else if (parentWidget) {
            // I need to be added to my parent, therefore my parent needs an NSView
            parentWidget->createWinId();
            parent = qt_mac_nativeview_for(parentWidget);
        }
        if(parent != nativeView && parent) {
#ifndef QT_MAC_USE_COCOA
            HIViewAddSubview(parent, nativeView);
#else