c++/src

/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
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**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#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 "qlibrary.h"
#include "qpainter.h"
#include "qstack.h"
#include "qt_windows.h"
#include "qwidget.h"
#include "qwidget_p.h"
#include "private/qbackingstore_p.h"
#include "private/qwindowsurface_raster_p.h"

#include "qscrollbar.h"
#include "qabstractscrollarea.h"
#include <private/qabstractscrollarea_p.h>

#include <qdebug.h>

#include <private/qapplication_p.h>
#include <private/qwininputcontext_p.h>
#include <private/qpaintengine_raster_p.h>

#if defined(Q_WS_WINCE)
#include "qguifunctions_wince.h"
QT_USE_NAMESPACE
extern void qt_wince_maximize(QWidget *widget);                          //defined in qguifunctions_wince.cpp
extern void qt_wince_unmaximize(QWidget *widget);                        //defined in qguifunctions_wince.cpp
extern void qt_wince_minimize(HWND hwnd);                                //defined in qguifunctions_wince.cpp
extern void qt_wince_full_screen(HWND hwnd, bool fullScreen, UINT swpf); //defined in qguifunctions_wince.cpp
extern bool qt_wince_is_mobile();                                        //defined in qguifunctions_wince.cpp
#endif

typedef BOOL    (WINAPI *PtrSetLayeredWindowAttributes)(HWND hwnd, COLORREF crKey, BYTE bAlpha, DWORD dwFlags);
static PtrSetLayeredWindowAttributes ptrSetLayeredWindowAttributes = 0;

#ifndef QT_NO_DIRECTDRAW
#include <ddraw.h>
#include <private/qimage_p.h>
static IDirectDraw *qt_ddraw_object;
static IDirectDrawSurface *qt_ddraw_primary;
#endif


#if defined(QT_NON_COMMERCIAL)
#include "qnc_win.h"
#endif

#if !defined(WS_EX_TOOLWINDOW)
#define WS_EX_TOOLWINDOW 0x00000080
#endif

#if !defined(GWLP_WNDPROC)
#define GWLP_WNDPROC GWL_WNDPROC
#endif

//#define TABLET_DEBUG
#define PACKETDATA  (PK_X | PK_Y | PK_BUTTONS | PK_NORMAL_PRESSURE | PK_TANGENT_PRESSURE \
                     | PK_ORIENTATION | PK_CURSOR | PK_Z)
#define PACKETMODE  0
#include <wintab.h>
#include <pktdef.h>

QT_BEGIN_NAMESPACE

typedef HCTX        (API *PtrWTOpen)(HWND, LPLOGCONTEXT, BOOL);
typedef BOOL        (API *PtrWTClose)(HCTX);
typedef UINT        (API *PtrWTInfo)(UINT, UINT, LPVOID);
typedef BOOL        (API *PtrWTEnable)(HCTX, BOOL);
typedef BOOL        (API *PtrWTOverlap)(HCTX, BOOL);
typedef int        (API *PtrWTPacketsGet)(HCTX, int, LPVOID);
typedef BOOL        (API *PtrWTGet)(HCTX, LPLOGCONTEXT);
typedef int     (API *PtrWTQueueSizeGet)(HCTX);
typedef BOOL    (API *PtrWTQueueSizeSet)(HCTX, int);

static PtrWTOpen ptrWTOpen = 0;
static PtrWTClose ptrWTClose = 0;
static PtrWTInfo ptrWTInfo = 0;
static PtrWTQueueSizeGet ptrWTQueueSizeGet = 0;
static PtrWTQueueSizeSet ptrWTQueueSizeSet = 0;
#ifndef QT_NO_TABLETEVENT
static void init_wintab_functions();
static void qt_tablet_init();
static void qt_tablet_cleanup();
#endif // QT_NO_TABLETEVENT
extern HCTX qt_tablet_context;
extern bool qt_tablet_tilt_support;

static QWidget *qt_tablet_widget = 0;
QWidget* qt_get_tablet_widget()
{
    return qt_tablet_widget;
}

extern bool qt_is_gui_used;

#ifndef QT_NO_TABLETEVENT
static void init_wintab_functions()
{
#if defined(Q_OS_WINCE)
    return;
#else
    if (!qt_is_gui_used)
        return;
    QLibrary library(QLatin1String("wintab32"));
    ptrWTOpen = (PtrWTOpen)library.resolve("WTOpenW");
    ptrWTInfo = (PtrWTInfo)library.resolve("WTInfoW");
    ptrWTClose = (PtrWTClose)library.resolve("WTClose");
    ptrWTQueueSizeGet = (PtrWTQueueSizeGet)library.resolve("WTQueueSizeGet");
    ptrWTQueueSizeSet = (PtrWTQueueSizeSet)library.resolve("WTQueueSizeSet");
#endif // Q_OS_WINCE
}

static void qt_tablet_init()
{
    static bool firstTime = true;
    if (!firstTime)
        return;
    firstTime = false;
    qt_tablet_widget = new QWidget(0);
    qt_tablet_widget->createWinId();
    qt_tablet_widget->setObjectName(QLatin1String("Qt internal tablet widget"));
    // We don't need this internal widget to appear in QApplication::topLevelWidgets()
    if (QWidgetPrivate::allWidgets)
        QWidgetPrivate::allWidgets->remove(qt_tablet_widget);
    LOGCONTEXT lcMine;
    qAddPostRoutine(qt_tablet_cleanup);
    struct tagAXIS tpOri[3];
    init_wintab_functions();
    if (ptrWTInfo && ptrWTOpen && ptrWTQueueSizeGet && ptrWTQueueSizeSet) {
        // make sure we have WinTab
        if (!ptrWTInfo(0, 0, NULL)) {
#ifdef TABLET_DEBUG
            qWarning("QWidget: Wintab services not available");
#endif
            return;
        }

        // some tablets don't support tilt, check if it is possible,
        qt_tablet_tilt_support = ptrWTInfo(WTI_DEVICES, DVC_ORIENTATION, &tpOri);
        if (qt_tablet_tilt_support) {
            // check for azimuth and altitude
            qt_tablet_tilt_support = tpOri[0].axResolution && tpOri[1].axResolution;
        }
        // build our context from the default context
        ptrWTInfo(WTI_DEFSYSCTX, 0, &lcMine);
        // Go for the raw coordinates, the tablet event will return good stuff
        lcMine.lcOptions |= CXO_MESSAGES | CXO_CSRMESSAGES;
        lcMine.lcPktData = PACKETDATA;
        lcMine.lcPktMode = PACKETMODE;
        lcMine.lcMoveMask = PACKETDATA;
        lcMine.lcOutOrgX = 0;
        lcMine.lcOutExtX = lcMine.lcInExtX;
        lcMine.lcOutOrgY = 0;
        lcMine.lcOutExtY = -lcMine.lcInExtY;
        qt_tablet_context = ptrWTOpen(qt_tablet_widget->winId(), &lcMine, true);
#ifdef TABLET_DEBUG
        qDebug("Tablet is %p", qt_tablet_context);
#endif
        if (!qt_tablet_context) {
#ifdef TABLET_DEBUG
            qWarning("QWidget: Failed to open the tablet");
#endif
            return;
        }
        // Set the size of the Packet Queue to the correct size...
        int currSize = ptrWTQueueSizeGet(qt_tablet_context);
        if (!ptrWTQueueSizeSet(qt_tablet_context, QT_TABLET_NPACKETQSIZE)) {
            // Ideally one might want to use a smaller
            // multiple, but for now, since we managed to destroy
            // the existing Q with the previous call, set it back
            // to the other size, which should work.  If not,
            // there will be trouble.
            if (!ptrWTQueueSizeSet(qt_tablet_context, currSize)) {
                Q_ASSERT_X(0, "Qt::Internal", "There is no packet queue for"
                         " the tablet. The tablet will not work");
            }
        }
    }
}

static void qt_tablet_cleanup()
{
    if (ptrWTClose)
        ptrWTClose(qt_tablet_context);
    delete qt_tablet_widget;
    qt_tablet_widget = 0;
}
#endif // QT_NO_TABLETEVENT

const QString qt_reg_winclass(QWidget *w);                // defined in qapplication_win.cpp

#ifndef QT_NO_DRAGANDDROP
void            qt_olednd_unregister(QWidget* widget, QOleDropTarget *dst); // dnd_win
QOleDropTarget* qt_olednd_register(QWidget* widget);
#endif

extern bool qt_nograb();
extern HRGN qt_win_bitmapToRegion(const QBitmap& bitmap);

static QWidget *mouseGrb    = 0;
static QCursor *mouseGrbCur = 0;
static QWidget *keyboardGrb = 0;
static HHOOK   journalRec  = 0;

extern "C" LRESULT QT_WIN_CALLBACK QtWndProc(HWND, UINT, WPARAM, LPARAM);

#define XCOORD_MAX 16383
#define WRECT_MAX 16383

/*****************************************************************************
  QWidget member functions
 *****************************************************************************/

#ifndef Q_WS_WINCE
void QWidgetPrivate::create_sys(WId window, bool initializeWindow, bool destroyOldWindow)
{
    Q_Q(QWidget);
    static int sw = -1, sh = -1;

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

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

    HINSTANCE appinst  = qWinAppInst();
    HWND parentw, destroyw = 0;
    WId id = 0;

    QString windowClassName = qt_reg_winclass(q);

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

    if (popup)
        flags |= Qt::WindowStaysOnTopHint; // a popup stays on top

    if (sw < 0) {                                // get the (primary) screen size
        sw = GetSystemMetrics(SM_CXSCREEN);
        sh = GetSystemMetrics(SM_CYSCREEN);
    }

    if (desktop && !q->testAttribute(Qt::WA_DontShowOnScreen)) {                                // desktop widget
        popup = false;                                // force this flags off
        data.crect.setRect(GetSystemMetrics(76 /* SM_XVIRTUALSCREEN  */), GetSystemMetrics(77 /* SM_YVIRTUALSCREEN  */),
                           GetSystemMetrics(78 /* SM_CXVIRTUALSCREEN */), GetSystemMetrics(79 /* SM_CYVIRTUALSCREEN */));
    }

    parentw = q->parentWidget() ? q->parentWidget()->effectiveWinId() : 0;

    QString title;
    int style = WS_CHILD;
    int exsty = 0;

    if (window) {
        style = GetWindowLong(window, GWL_STYLE);
        if (!style)
            qErrnoWarning("QWidget::create: GetWindowLong failed");
        topLevel = false; // #### needed for some IE plugins??
    } else if (popup || (type == Qt::ToolTip) || (type == Qt::SplashScreen)) {
        style = WS_POPUP;
    } else if (topLevel && !desktop) {
        if (flags & Qt::FramelessWindowHint)
            style = WS_POPUP;                // no border
        else if (flags & Qt::WindowTitleHint)
            style = WS_OVERLAPPED;
        else
            style = 0;
    }
    if (!desktop) {
        // if (!testAttribute(Qt::WA_PaintUnclipped))
        // ### Commented out for now as it causes some problems, but
        // this should be correct anyway, so dig some more into this
#ifndef Q_FLATTEN_EXPOSE
        style |= WS_CLIPSIBLINGS | WS_CLIPCHILDREN ;
#endif
        if (topLevel) {
            if ((type == Qt::Window || dialog || tool)) {
                if (!(flags & Qt::FramelessWindowHint)) {
                    if (!(flags & Qt::MSWindowsFixedSizeDialogHint)) {
                        style |= WS_THICKFRAME;
                        if(!(flags &
                            ( Qt::WindowSystemMenuHint
                            | Qt::WindowTitleHint
                            | Qt::WindowMinMaxButtonsHint
                            | Qt::WindowCloseButtonHint
                            | Qt::WindowContextHelpButtonHint)))
                            style |= WS_POPUP;
                    } else {
                        style |= WS_POPUP | WS_DLGFRAME;
                    }
                }
                if (flags & Qt::WindowTitleHint)
                    style |= WS_CAPTION;
                if (flags & Qt::WindowSystemMenuHint)
                    style |= WS_SYSMENU;
                if (flags & Qt::WindowMinimizeButtonHint)
                    style |= WS_MINIMIZEBOX;
                if (shouldShowMaximizeButton())
                    style |= WS_MAXIMIZEBOX;
                if (tool)
                    exsty |= WS_EX_TOOLWINDOW;
                if (flags & Qt::WindowContextHelpButtonHint)
                    exsty |= WS_EX_CONTEXTHELP;
            } else {
                 exsty |= WS_EX_TOOLWINDOW;
            }
        }
    }

    if (flags & Qt::WindowTitleHint) {
        title = q->isWindow() ? qAppName() : q->objectName();
    }

    // The Qt::WA_WState_Created flag is checked by translateConfigEvent() in
    // qapplication_win.cpp. We switch it off temporarily to avoid move
    // and resize events during creationt
    q->setAttribute(Qt::WA_WState_Created, false);

    if (window) {                                // override the old window
        if (destroyOldWindow)
            destroyw = data.winid;
        id = window;
        setWinId(window);
        LONG res = SetWindowLong(window, GWL_STYLE, style);
        if (!res)
            qErrnoWarning("QWidget::create: Failed to set window style");
#ifdef _WIN64
        res = SetWindowLongPtr( window, GWLP_WNDPROC, (LONG_PTR)QtWndProc );
#else
        res = SetWindowLong( window, GWL_WNDPROC, (LONG)QtWndProc );
#endif
        if (!res)
            qErrnoWarning("QWidget::create: Failed to set window procedure");
    } else if (desktop) {                        // desktop widget
        id = GetDesktopWindow();
//         QWidget *otherDesktop = QWidget::find(id);        // is there another desktop?
//         if (otherDesktop && otherDesktop->testWFlags(Qt::WPaintDesktop)) {
//             otherDesktop->d_func()->setWinId(0);        // remove id from widget mapper
//             d->setWinId(id);                     // make sure otherDesktop is
//             otherDesktop->d_func()->setWinId(id);       //   found first
//         } else {
            setWinId(id);
//         }
    } else if (topLevel) {                       // create top-level widget
        if (popup)
            parentw = 0;

        const bool wasMoved = q->testAttribute(Qt::WA_Moved);
        int x = wasMoved ? data.crect.left() : CW_USEDEFAULT;
        int y = wasMoved ? data.crect.top() : CW_USEDEFAULT;
        int w = CW_USEDEFAULT;
        int h = CW_USEDEFAULT;

        // Adjust for framestrut when needed
        RECT rect = {0,0,0,0};
        bool isVisibleOnScreen = !q->testAttribute(Qt::WA_DontShowOnScreen);
        if (isVisibleOnScreen && AdjustWindowRectEx(&rect, style & ~WS_OVERLAPPED, FALSE, exsty)) {
            QTLWExtra *td = maybeTopData();
            if (wasMoved && (td && !td->posFromMove)) {
                x = data.crect.x() + rect.left;
                y = data.crect.y() + rect.top;
            }

            if (q->testAttribute(Qt::WA_Resized)) {
                w = data.crect.width() + (rect.right - rect.left);
                h = data.crect.height() + (rect.bottom - rect.top);
            }
        }
        //update position & initial size of POPUP window
        if (isVisibleOnScreen && topLevel && initializeWindow && (style & WS_POPUP)) {
            if (!q->testAttribute(Qt::WA_Resized)) {
                w = sw/2;
                h = 4*sh/10;
            }
            if (!wasMoved) {
                x = sw/2 - w/2;
                y = sh/2 - h/2;
            }
        }

        id = CreateWindowEx(exsty, reinterpret_cast<const wchar_t *>(windowClassName.utf16()),
                            reinterpret_cast<const wchar_t *>(title.utf16()), style,
                            x, y, w, h,
                            parentw, NULL, appinst, NULL);
        if (!id)
            qErrnoWarning("QWidget::create: Failed to create window");
        setWinId(id);
        if ((flags & Qt::WindowStaysOnTopHint) || (type == Qt::ToolTip)) {
            SetWindowPos(id, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
            if (flags & Qt::WindowStaysOnBottomHint)
                qWarning() << "QWidget: Incompatible window flags: the window can't be on top and on bottom at the same time";
        } else if (flags & Qt::WindowStaysOnBottomHint)
            SetWindowPos(id, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
        winUpdateIsOpaque();
    } else if (q->testAttribute(Qt::WA_NativeWindow) || paintOnScreen()) { // create child widget
        id = CreateWindowEx(exsty, reinterpret_cast<const wchar_t *>(windowClassName.utf16()),
                            reinterpret_cast<const wchar_t *>(title.utf16()), style,
                            data.crect.left(), data.crect.top(), data.crect.width(), data.crect.height(),
                            parentw, NULL, appinst, NULL);
        if (!id)
            qErrnoWarning("QWidget::create: Failed to create window");
        SetWindowPos(id, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
        setWinId(id);
    }

    if (desktop) {
        q->setAttribute(Qt::WA_WState_Visible);
    } else if (topLevel && !q->testAttribute(Qt::WA_DontShowOnScreen)) {
        RECT  cr;
        GetClientRect(id, &cr);
        // one cannot trust cr.left and cr.top, use a correction POINT instead
        POINT pt;
        pt.x = 0;
        pt.y = 0;
        ClientToScreen(id, &pt);

        if (data.crect.width() == 0 || data.crect.height() == 0) {
            data.crect = QRect(pt.x, pt.y, data.crect.width(), data.crect.height());
        } else {
            data.crect = QRect(QPoint(pt.x, pt.y),
                               QPoint(pt.x + cr.right - 1, pt.y + cr.bottom - 1));
        }

        if (data.fstrut_dirty) {
            // be nice to activeqt
            updateFrameStrut();
        }
    }

    if (topLevel) {
        if (data.window_flags & Qt::CustomizeWindowHint
            && data.window_flags & Qt::WindowTitleHint) {
            HMENU systemMenu = GetSystemMenu((HWND)q->internalWinId(), FALSE);
            if (data.window_flags & Qt::WindowCloseButtonHint)
                EnableMenuItem(systemMenu, SC_CLOSE, MF_BYCOMMAND|MF_ENABLED);
            else
                EnableMenuItem(systemMenu, SC_CLOSE, MF_BYCOMMAND|MF_GRAYED);
        }
    }

    q->setAttribute(Qt::WA_WState_Created);                // accept move/resize events
    hd = 0;                                        // no display context

    if (q->testAttribute(Qt::WA_AcceptTouchEvents))
        registerTouchWindow();

    if (window) {                                // got window from outside
        if (IsWindowVisible(window))
            q->setAttribute(Qt::WA_WState_Visible);
        else
            q->setAttribute(Qt::WA_WState_Visible, false);
    }

    if (extra && !extra->mask.isEmpty())
        setMask_sys(extra->mask);

#if defined(QT_NON_COMMERCIAL)
    QT_NC_WIDGET_CREATE
#endif

    if (q->hasFocus() && q->testAttribute(Qt::WA_InputMethodEnabled))
        q->inputContext()->setFocusWidget(q);

    if (destroyw) {
        DestroyWindow(destroyw);
    }

#ifndef QT_NO_TABLETEVENT
    if (q != qt_tablet_widget && QWidgetPrivate::mapper)
        qt_tablet_init();
#endif // QT_NO_TABLETEVENT

    if (q->testAttribute(Qt::WA_DropSiteRegistered))
        registerDropSite(true);

    if (maybeTopData() && maybeTopData()->opacity != 255)
        q->setWindowOpacity(maybeTopData()->opacity/255.);

    if (topLevel && (data.crect.width() == 0 || data.crect.height() == 0)) {
        q->setAttribute(Qt::WA_OutsideWSRange, true);
    }

    if (!topLevel && q->testAttribute(Qt::WA_NativeWindow) && q->testAttribute(Qt::WA_Mapped)) {
        Q_ASSERT(q->internalWinId());
        ShowWindow(q->internalWinId(), SW_SHOW);
    }
}

#endif //Q_WS_WINCE


void QWidget::destroy(bool destroyWindow, bool destroySubWindows)
{
    Q_D(QWidget);
    d->aboutToDestroy();
    if (!isWindow() && parentWidget())
        parentWidget()->d_func()->invalidateBuffer(d->effectiveRectFor(geometry()));
    d->deactivateWidgetCleanup();
    if (testAttribute(Qt::WA_WState_Created)) {
        setAttribute(Qt::WA_WState_Created, false);
        for(int i = 0; i < d->children.size(); ++i) { // destroy all widget children
            register QObject *obj = d->children.at(i);
            if (obj->isWidgetType())
                ((QWidget*)obj)->destroy(destroySubWindows,
                                         destroySubWindows);
        }
        if (mouseGrb == this)
            releaseMouse();
        if (keyboardGrb == this)
            releaseKeyboard();
        if (testAttribute(Qt::WA_ShowModal))                // just be sure we leave modal
            QApplicationPrivate::leaveModal(this);
        else if ((windowType() == Qt::Popup))
            qApp->d_func()->closePopup(this);
        if (destroyWindow && !(windowType() == Qt::Desktop) && internalWinId()) {
            DestroyWindow(internalWinId());
        }
#ifdef Q_WS_WINCE
        if (destroyWindow && (windowType() == Qt::Desktop) && !GetDesktopWindow()) {
            DestroyWindow(internalWinId());
        }

#endif
        QT_TRY {
            d->setWinId(0);
        } QT_CATCH (const std::bad_alloc &) {
            // swallow - destructors must not throw
        }
    }
}

void QWidgetPrivate::reparentChildren()
{
    Q_Q(QWidget);
    QObjectList chlist = q->children();
    for(int i = 0; i < chlist.size(); ++i) { // reparent children
        QObject *obj = chlist.at(i);
        if (obj->isWidgetType()) {
            QWidget *w = (QWidget *)obj;
            if ((w->windowType() == Qt::Popup)) {
                ;
            } else if (w->isWindow()) {
                bool showIt = w->isVisible();
                QPoint old_pos = w->pos();
                w->setParent(q, w->windowFlags());
                w->move(old_pos);
                if (showIt)
                    w->show();
            } else {
                w->d_func()->invalidateBuffer(w->rect());
                SetParent(w->effectiveWinId(), q->effectiveWinId());
                w->d_func()->reparentChildren();
            }
        }
    }
}

void QWidgetPrivate::setParent_sys(QWidget *parent, Qt::WindowFlags f)
{
    Q_Q(QWidget);
    bool wasCreated = q->testAttribute(Qt::WA_WState_Created);
    if (q->isVisible() && q->parentWidget() && parent != q->parentWidget())
        q->parentWidget()->d_func()->invalidateBuffer(effectiveRectFor(q->geometry()));

    WId old_winid = data.winid;
    // hide and reparent our own window away. Otherwise we might get
    // destroyed when emitting the child remove event below. See QWorkspace.
    if (q->isVisible() && data.winid) {
        ShowWindow(data.winid, SW_HIDE);
        SetParent(data.winid, 0);
    }
    bool dropSiteWasRegistered = false;
    if (q->testAttribute(Qt::WA_DropSiteRegistered)) {
        dropSiteWasRegistered = true;
        q->setAttribute(Qt::WA_DropSiteRegistered, false); // ole dnd unregister (we will register again below)
    }

    if ((q->windowType() == Qt::Desktop))
        old_winid = 0;
    setWinId(0);

    QObjectPrivate::setParent_helper(parent);
    bool explicitlyHidden = q->testAttribute(Qt::WA_WState_Hidden) && q->testAttribute(Qt::WA_WState_ExplicitShowHide);

    data.window_flags = f;
    data.fstrut_dirty = true;
    q->setAttribute(Qt::WA_WState_Created, false);
    q->setAttribute(Qt::WA_WState_Visible, false);
    q->setAttribute(Qt::WA_WState_Hidden, false);
    adjustFlags(data.window_flags, q);
    // keep compatibility with previous versions, we need to preserve the created state
    // (but we recreate the winId for the widget being reparented, again for compatibility)
    if (wasCreated || (!q->isWindow() && parent->testAttribute(Qt::WA_WState_Created)))
        createWinId();
    if (q->isWindow() || (!parent || parent->isVisible()) || explicitlyHidden)
        q->setAttribute(Qt::WA_WState_Hidden);
    q->setAttribute(Qt::WA_WState_ExplicitShowHide, explicitlyHidden);

    if (wasCreated) {
        reparentChildren();
    }

    if (extra && !extra->mask.isEmpty()) {
        QRegion r = extra->mask;
        extra->mask = QRegion();
        q->setMask(r);
    }
    if (extra && extra->topextra && !extra->topextra->caption.isEmpty()) {
        setWindowIcon_sys(true);
        setWindowTitle_helper(extra->topextra->caption);
    }
    if (old_winid)
        DestroyWindow(old_winid);

    if (q->testAttribute(Qt::WA_AcceptDrops) || dropSiteWasRegistered
        || (!q->isWindow() && q->parentWidget() && q->parentWidget()->testAttribute(Qt::WA_DropSiteRegistered)))
        q->setAttribute(Qt::WA_DropSiteRegistered, true);

#ifdef Q_WS_WINCE
    // Show borderless toplevel windows in tasklist & NavBar
    if (!parent) {
        QString txt = q->windowTitle().isEmpty()?qAppName():q->windowTitle();
        SetWindowText(q->internalWinId(), (wchar_t*)txt.utf16());
    }
#endif
    invalidateBuffer(q->rect());
}


QPoint QWidget::mapToGlobal(const QPoint &pos) const
{
    Q_D(const QWidget);
    QWidget *parentWindow = window();
    QWExtra *extra = parentWindow->d_func()->extra;
    if (!isVisible() || parentWindow->isMinimized() || !testAttribute(Qt::WA_WState_Created) || !internalWinId()
        || (extra
#ifndef QT_NO_GRAPHICSVIEW
            && extra->proxyWidget
#endif //QT_NO_GRAPHICSVIEW
            )) {
        if (extra && extra->topextra && extra->topextra->embedded) {
            QPoint pt = mapTo(parentWindow, pos);
            POINT p = {pt.x(), pt.y()};
            ClientToScreen(parentWindow->effectiveWinId(), &p);
            return QPoint(p.x, p.y);
        } else {
            QPoint toGlobal = mapTo(parentWindow, pos) + parentWindow->pos();
            // Adjust for window decorations
            toGlobal += parentWindow->geometry().topLeft() - parentWindow->frameGeometry().topLeft();
            return toGlobal;
        }
    }
    POINT p;
    QPoint tmp = d->mapToWS(pos);
    p.x = tmp.x();
    p.y = tmp.y();
    ClientToScreen(internalWinId(), &p);
    return QPoint(p.x, p.y);
}

QPoint QWidget::mapFromGlobal(const QPoint &pos) const
{
    Q_D(const QWidget);
    QWidget *parentWindow = window();
    QWExtra *extra = parentWindow->d_func()->extra;
    if (!isVisible() || parentWindow->isMinimized() || !testAttribute(Qt::WA_WState_Created) || !internalWinId()
        || (extra
#ifndef QT_NO_GRAPHICSVIEW
            && extra->proxyWidget
#endif //QT_NO_GRAPHICSVIEW
            )) {
        if (extra && extra->topextra && extra->topextra->embedded) {
            POINT p = {pos.x(), pos.y()};
            ScreenToClient(parentWindow->effectiveWinId(), &p);
            return mapFrom(parentWindow, QPoint(p.x, p.y));
        } else {
            QPoint fromGlobal = mapFrom(parentWindow, pos - parentWindow->pos());
            // Adjust for window decorations
            fromGlobal -= parentWindow->geometry().topLeft() - parentWindow->frameGeometry().topLeft();
            return fromGlobal;
        }
    }
    POINT p;
    p.x = pos.x();
    p.y = pos.y();
    ScreenToClient(internalWinId(), &p);
    return d->mapFromWS(QPoint(p.x, p.y));
}

void QWidgetPrivate::updateSystemBackground() {}

#ifndef QT_NO_CURSOR
void QWidgetPrivate::setCursor_sys(const QCursor &cursor)
{
    Q_UNUSED(cursor);
    Q_Q(QWidget);
    qt_win_set_cursor(q, false);
}

void QWidgetPrivate::unsetCursor_sys()
{
    Q_Q(QWidget);
    qt_win_set_cursor(q, false);
}
#endif

void QWidgetPrivate::setWindowTitle_sys(const QString &caption)
{
    Q_Q(QWidget);
    if (!q->isWindow())
        return;

    Q_ASSERT(q->testAttribute(Qt::WA_WState_Created));
    SetWindowText(q->internalWinId(), (wchar_t*)caption.utf16());
}

HICON qt_createIcon(QIcon icon, int xSize, int ySize, QPixmap **cache)
{
    HICON result = 0;
    if (!icon.isNull()) { // valid icon
        QSize size = icon.actualSize(QSize(xSize, ySize));
        QPixmap pm = icon.pixmap(size);
        if (pm.isNull())
            return 0;

        result = pm.toWinHICON();

        if (cache) {
            delete *cache;
            *cache = new QPixmap(pm);;
        }
    }
    return result;
}

void QWidgetPrivate::setWindowIcon_sys(bool forceReset)
{
    Q_Q(QWidget);
    if (!q->testAttribute(Qt::WA_WState_Created) || !q->isWindow())
        return;
    QTLWExtra* x = topData();
    if (x->iconPixmap && !forceReset)
        // already been set
        return;

    if (x->winIconBig) {
        DestroyIcon(x->winIconBig);
        x->winIconBig = 0;
    }
    if (x->winIconSmall) {
        DestroyIcon(x->winIconSmall);
        x->winIconSmall = 0;
    }

    x->winIconSmall = qt_createIcon(q->windowIcon(),
                                    GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON),
                                    &(x->iconPixmap));
    x->winIconBig = qt_createIcon(q->windowIcon(),
                                  GetSystemMetrics(SM_CXICON), GetSystemMetrics(SM_CYICON),
                                  &(x->iconPixmap));
    if (x->winIconBig) {
        SendMessage(q->internalWinId(), WM_SETICON, 0 /* ICON_SMALL */, (LPARAM)x->winIconSmall);
        SendMessage(q->internalWinId(), WM_SETICON, 1 /* ICON_BIG */, (LPARAM)x->winIconBig);
    } else {
        SendMessage(q->internalWinId(), WM_SETICON, 0 /* ICON_SMALL */, (LPARAM)x->winIconSmall);
        SendMessage(q->internalWinId(), WM_SETICON, 1 /* ICON_BIG */, (LPARAM)x->winIconSmall);
    }
}


void QWidgetPrivate::setWindowIconText_sys(const QString &iconText)
{
    Q_UNUSED(iconText);
}


QCursor *qt_grab_cursor()
{
    return mouseGrbCur;
}

// The procedure does nothing, but is required for mousegrabbing to work
#ifndef Q_WS_WINCE
LRESULT QT_WIN_CALLBACK qJournalRecordProc(int nCode, WPARAM wParam, LPARAM lParam)
{
    return CallNextHookEx(journalRec, nCode, wParam, lParam);
}
#endif //Q_WS_WINCE

/* Works only as long as pointer is inside the application's window,
   which is good enough for QDockWidget.

   Doesn't call SetWindowsHookEx() - this function causes a system-wide
   freeze if any other app on the system installs a hook and fails to
   process events. */
void QWidgetPrivate::grabMouseWhileInWindow()
{
    Q_Q(QWidget);
    if (!qt_nograb()) {
        if (mouseGrb)
            mouseGrb->releaseMouse();
        Q_ASSERT(q->testAttribute(Qt::WA_WState_Created));
        SetCapture(q->effectiveWinId());
        mouseGrb = q;
#ifndef QT_NO_CURSOR
        mouseGrbCur = new QCursor(mouseGrb->cursor());
#endif
    }
}

#ifndef Q_WS_WINCE
void QWidget::grabMouse()
{
    if (!qt_nograb()) {
        if (mouseGrb)
            mouseGrb->releaseMouse();
        journalRec = SetWindowsHookEx(WH_JOURNALRECORD, (HOOKPROC)qJournalRecordProc, GetModuleHandle(0), 0);
        Q_ASSERT(testAttribute(Qt::WA_WState_Created));
        SetCapture(effectiveWinId());
        mouseGrb = this;
#ifndef QT_NO_CURSOR
        mouseGrbCur = new QCursor(mouseGrb->cursor());
#endif
    }
}

#ifndef QT_NO_CURSOR
void QWidget::grabMouse(const QCursor &cursor)
{
    if (!qt_nograb()) {
        if (mouseGrb)
            mouseGrb->releaseMouse();
        journalRec = SetWindowsHookEx(WH_JOURNALRECORD, (HOOKPROC)qJournalRecordProc, GetModuleHandle(0), 0);
        Q_ASSERT(testAttribute(Qt::WA_WState_Created));
        SetCapture(effectiveWinId());
        mouseGrbCur = new QCursor(cursor);
        SetCursor(mouseGrbCur->handle());
        mouseGrb = this;
    }
}
#endif

void QWidget::releaseMouse()
{
    if (!qt_nograb() && mouseGrb == this) {
        ReleaseCapture();
        if (journalRec) {
            UnhookWindowsHookEx(journalRec);
            journalRec = 0;
        }
        if (mouseGrbCur) {
            delete mouseGrbCur;
            mouseGrbCur = 0;
        }
        mouseGrb = 0;
    }
}
#endif

void QWidget::grabKeyboard()
{
    if (!qt_nograb()) {
        if (keyboardGrb)
            keyboardGrb->releaseKeyboard();
        keyboardGrb = this;
    }
}

void QWidget::releaseKeyboard()
{
    if (!qt_nograb() && keyboardGrb == this)
        keyboardGrb = 0;
}


QWidget *QWidget::mouseGrabber()
{
    return mouseGrb;
}

QWidget *QWidget::keyboardGrabber()
{
    return keyboardGrb;
}

void QWidget::activateWindow()
{
    window()->createWinId();
    SetForegroundWindow(window()->internalWinId());
}

#ifndef Q_WS_WINCE
void QWidget::setWindowState(Qt::WindowStates newstate)
{
    Q_D(QWidget);
    Qt::WindowStates oldstate = windowState();
    if (oldstate == newstate)
        return;

    int max = SW_MAXIMIZE;
    int min = SW_MINIMIZE;

    int normal = SW_SHOWNOACTIVATE;
    if (newstate & Qt::WindowActive) {
        max = SW_SHOWMAXIMIZED;
        min = SW_SHOWMINIMIZED;
        normal = SW_SHOWNORMAL;
    }

    if (isWindow()) {
        createWinId();
        Q_ASSERT(testAttribute(Qt::WA_WState_Created));

        // Ensure the initial size is valid, since we store it as normalGeometry below.
        if (!testAttribute(Qt::WA_Resized) && !isVisible())
            adjustSize();

        if ((oldstate & Qt::WindowMaximized) != (newstate & Qt::WindowMaximized)) {
            if (newstate & Qt::WindowMaximized && !(oldstate & Qt::WindowFullScreen))
                d->topData()->normalGeometry = geometry();
            if (isVisible() && !(newstate & Qt::WindowMinimized)) {
                ShowWindow(internalWinId(), (newstate & Qt::WindowMaximized) ? max : normal);
                if (!(newstate & Qt::WindowFullScreen)) {
                    QRect r = d->topData()->normalGeometry;
                    if (!(newstate & Qt::WindowMaximized) && r.width() >= 0) {
                        if (pos() != r.topLeft() || size() !=r.size()) {
                            d->topData()->normalGeometry = QRect(0,0,-1,-1);
                            setGeometry(r);
                        }
                    }
                } else {
                    d->updateFrameStrut();
                }
            }
        }

        if ((oldstate & Qt::WindowFullScreen) != (newstate & Qt::WindowFullScreen)) {
            if (newstate & Qt::WindowFullScreen) {
                if (d->topData()->normalGeometry.width() < 0 && !(oldstate & Qt::WindowMaximized))
                    d->topData()->normalGeometry = geometry();
                d->topData()->savedFlags = Qt::WindowFlags(GetWindowLong(internalWinId(), GWL_STYLE));
#ifndef Q_FLATTEN_EXPOSE
                UINT style = WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_POPUP;
#else
                UINT style = WS_POPUP;
#endif
		if (ulong(d->topData()->savedFlags) & WS_SYSMENU)
		    style |= WS_SYSMENU;
                if (isVisible())
                    style |= WS_VISIBLE;
                SetWindowLong(internalWinId(), GWL_STYLE, style);
                QRect r = QApplication::desktop()->screenGeometry(this);
                UINT swpf = SWP_FRAMECHANGED;
                if (newstate & Qt::WindowActive)
                    swpf |= SWP_NOACTIVATE;

                SetWindowPos(internalWinId(), HWND_TOP, r.left(), r.top(), r.width(), r.height(), swpf);
                d->updateFrameStrut();
            } else {
                UINT style = d->topData()->savedFlags;
                if (isVisible())
                    style |= WS_VISIBLE;
                SetWindowLong(internalWinId(), GWL_STYLE, style);

                UINT swpf = SWP_FRAMECHANGED | SWP_NOZORDER | SWP_NOSIZE | SWP_NOMOVE;
                if (newstate & Qt::WindowActive)
                    swpf |= SWP_NOACTIVATE;
                SetWindowPos(internalWinId(), 0, 0, 0, 0, 0, swpf);
                d->updateFrameStrut();

                // preserve maximized state
                if (isVisible())
                    ShowWindow(internalWinId(), (newstate & Qt::WindowMaximized) ? max : normal);

                if (!(newstate & Qt::WindowMaximized)) {
                    QRect r = d->topData()->normalGeometry;
                    d->topData()->normalGeometry = QRect(0,0,-1,-1);
                    if (r.isValid())
                        setGeometry(r);
                }
            }
        }

        if ((oldstate & Qt::WindowMinimized) != (newstate & Qt::WindowMinimized)) {
            if (isVisible())
                ShowWindow(internalWinId(), (newstate & Qt::WindowMinimized) ? min :
                                    (newstate & Qt::WindowMaximized) ? max : normal);
        }
    }
    data->window_state = newstate;
    QWindowStateChangeEvent e(oldstate);
    QApplication::sendEvent(this, &e);
}
#endif //Q_WS_WINCE


/*
  \internal
  Platform-specific part of QWidget::hide().
*/

void QWidgetPrivate::hide_sys()
{
    Q_Q(QWidget);
    deactivateWidgetCleanup();
    Q_ASSERT(q->testAttribute(Qt::WA_WState_Created));
#ifdef Q_WS_WINCE
    if (!qt_wince_is_mobile() && q->isFullScreen()) {
        HWND handle = FindWindow(L"HHTaskBar", L"");
        if (handle) {
            ShowWindow(handle, 1);
            EnableWindow(handle, true);
        }
    }
#endif
    if (q->windowFlags() != Qt::Desktop) {
        if ((q->windowFlags() & Qt::Popup) && q->internalWinId())
            ShowWindow(q->internalWinId(), SW_HIDE);
        else if (q->internalWinId())
            SetWindowPos(q->internalWinId(),0, 0,0,0,0, SWP_HIDEWINDOW|SWP_NOSIZE|SWP_NOMOVE|SWP_NOZORDER);
    }
    if (q->isWindow()) {
        if (QWidgetBackingStore *bs = maybeBackingStore())
            bs->releaseBuffer();
    } else {
        invalidateBuffer(q->rect());
    }
    q->setAttribute(Qt::WA_Mapped, false);
}


/*
  \internal
  Platform-specific part of QWidget::show().
*/
#ifndef Q_WS_WINCE
void QWidgetPrivate::show_sys()
{
    Q_Q(QWidget);
#if defined(QT_NON_COMMERCIAL)
    QT_NC_SHOW_WINDOW
#endif
    if (q->testAttribute(Qt::WA_OutsideWSRange))
        return;
    q->setAttribute(Qt::WA_Mapped);
    Q_ASSERT(q->testAttribute(Qt::WA_WState_Created));

    if (q->testAttribute(Qt::WA_DontShowOnScreen)) {
        invalidateBuffer(q->rect());
        return;
    }

    if (data.window_flags & Qt::Window) {
        QTLWExtra *extra = topData();
        if (!extra->hotkeyRegistered) {
            // Try to set the hotkey using information from STARTUPINFO
            STARTUPINFO startupInfo;
            GetStartupInfo(&startupInfo);
            // If STARTF_USEHOTKEY is set, hStdInput is the virtual keycode
            if (startupInfo.dwFlags & 0x00000200) {
                WPARAM hotKey = (WPARAM)startupInfo.hStdInput;
                SendMessage(data.winid, WM_SETHOTKEY, hotKey, 0);
            }
            extra->hotkeyRegistered = 1;
        }
    }

    int sm = SW_SHOWNORMAL;
    bool fakedMaximize = false;
    if (q->isWindow()) {
        if (q->isMinimized()) {
            sm = SW_SHOWMINIMIZED;
            if (!IsWindowVisible(q->internalWinId()))
                sm = SW_SHOWMINNOACTIVE;
        } else if (q->isMaximized()) {
            sm = SW_SHOWMAXIMIZED;
            // Windows will not behave correctly when we try to maximize a window which does not
            // have minimize nor maximize buttons in the window frame. Windows would then ignore
            // non-available geometry, and rather maximize the widget to the full screen, minus the
            // window frame (caption). So, we do a trick here, by adding a maximize button before
            // maximizing the widget, and then remove the maximize button afterwards.
            Qt::WindowFlags &flags = data.window_flags;
            if (flags & Qt::WindowTitleHint &&
                !(flags & (Qt::WindowMinMaxButtonsHint | Qt::FramelessWindowHint))) {
                fakedMaximize = TRUE;
                int style = GetWindowLong(q->internalWinId(), GWL_STYLE);
                SetWindowLong(q->internalWinId(), GWL_STYLE, style | WS_MAXIMIZEBOX);
            }
        }
    }
    if (q->testAttribute(Qt::WA_ShowWithoutActivating)
        || (q->windowType() == Qt::Popup)
        || (q->windowType() == Qt::ToolTip)
        || (q->windowType() == Qt::Tool)) {
        sm = SW_SHOWNOACTIVATE;
    }


    if (q->internalWinId())
        ShowWindow(q->internalWinId(), sm);

    if (fakedMaximize) {
        int style = GetWindowLong(q->internalWinId(), GWL_STYLE);
        SetWindowLong(q->internalWinId(), GWL_STYLE, style & ~WS_MAXIMIZEBOX);
        SetWindowPos(q->internalWinId(), 0, 0, 0, 0, 0,
                     SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER
                     | SWP_FRAMECHANGED);
    }

    if (q->internalWinId()) {
        if (IsIconic(q->internalWinId()))
            data.window_state |= Qt::WindowMinimized;
        if (IsZoomed(q->internalWinId()))
            data.window_state |= Qt::WindowMaximized;
Mode	Name	Size
-rw-r--r--	Dependencies	95	log stats plain
-rw-r--r--	H5AbstractDs.cpp	4788	log stats plain
-rw-r--r--	H5AbstractDs.h	2891	log stats plain
-rw-r--r--	H5Alltypes.h	1419	log stats plain
-rw-r--r--	H5AtomType.cpp	5411	log stats plain
-rw-r--r--	H5AtomType.h	2848	log stats plain
-rw-r--r--	H5Attribute.cpp	5900	log stats plain
-rw-r--r--	H5Attribute.h	2534	log stats plain
-rw-r--r--	H5Classes.h	1722	log stats plain
-rw-r--r--	H5CommonFG.cpp	12859	log stats plain
-rw-r--r--	H5CommonFG.h	5882	log stats plain
-rw-r--r--	H5CompType.cpp	9502	log stats plain
-rw-r--r--	H5CompType.h	3907	log stats plain
-rw-r--r--	H5Cpp.h	1767	log stats plain
-rw-r--r--	H5DataSet.cpp	10422	log stats plain
-rw-r--r--	H5DataSet.h	4275	log stats plain
-rw-r--r--	H5DataSpace.cpp	11708	log stats plain
-rw-r--r--	H5DataSpace.h	4481	log stats plain
-rw-r--r--	H5DataType.cpp	11384	log stats plain
-rw-r--r--	H5DataType.h	4259	log stats plain
-rw-r--r--	H5DcreatProp.cpp	6546	log stats plain
-rw-r--r--	H5DcreatProp.h	3460	log stats plain
-rw-r--r--	H5DxferProp.cpp	6013	log stats plain
-rw-r--r--	H5DxferProp.h	3300	log stats plain
-rw-r--r--	H5EnumType.cpp	5911	log stats plain
-rw-r--r--	H5EnumType.h	2711	log stats plain
-rw-r--r--	H5Exception.cpp	9102	log stats plain
-rw-r--r--	H5Exception.h	6073	log stats plain
-rw-r--r--	H5FaccProp.cpp	7917	log stats plain
-rw-r--r--	H5FaccProp.h	4789	log stats plain
-rw-r--r--	H5FcreatProp.cpp	4092	log stats plain
-rw-r--r--	H5FcreatProp.h	2970	log stats plain
-rw-r--r--	H5File.cpp	7184	log stats plain
-rw-r--r--	H5File.h	2735	log stats plain
-rw-r--r--	H5FloatType.cpp	5589	log stats plain
-rw-r--r--	H5FloatType.h	2734	log stats plain
-rw-r--r--	H5Group.cpp	5190	log stats plain
-rw-r--r--	H5Group.h	2591	log stats plain
-rw-r--r--	H5IdComponent.cpp	5100	log stats plain
-rw-r--r--	H5IdComponent.h	3904	log stats plain
-rw-r--r--	H5Idtemplates.h	1899	log stats plain
-rw-r--r--	H5Include.h	1397	log stats plain
-rw-r--r--	H5IntType.cpp	3228	log stats plain
-rw-r--r--	H5IntType.h	2006	log stats plain
-rw-r--r--	H5Library.cpp	2686	log stats plain
-rw-r--r--	H5Library.h	2260	log stats plain
-rw-r--r--	H5Object.cpp	6185	log stats plain
-rw-r--r--	H5Object.h	3846	log stats plain
-rw-r--r--	H5PredType.cpp	16605	log stats plain
-rw-r--r--	H5PredType.h	9374	log stats plain
-rw-r--r--	H5PropList.cpp	5001	log stats plain
-rw-r--r--	H5PropList.h	2383	log stats plain
-rw-r--r--	H5RefCounter.cpp	1959	log stats plain
-rw-r--r--	H5RefCounter.h	2003	log stats plain
-rw-r--r--	H5StrType.cpp	4056	log stats plain
-rw-r--r--	H5StrType.h	2198	log stats plain
-rw-r--r--	Makefile.in	2207	log stats plain
-rwxr-xr-x	h5c++.in	6566	log stats plain