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This is the verbatim text of the qwindowdefs.h include file. It is provided only for illustration; the copyright remains with Trolltech.

** $Id: qt/qwindowdefs.h   3.3.8   edited Jan 11 14:38 $
** Definition of general window system dependent functions, types and
** constants
** Created : 931029
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
** This file is part of the kernel module of the Qt GUI Toolkit.
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Alternatively you may (at your option) use any
** later version of the GNU General Public License if such license has
** been publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** If you are unsure which license is appropriate for your use, please
** review the following information:
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** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file.  Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
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** herein.


#ifndef QT_H
#include "qobjectdefs.h"
#include "qstring.h"
#include "qnamespace.h"
#endif // QT_H

// Class forward definitions

class QPaintDevice;
class QPaintDeviceMetrics;
class QWidget;
class QWidgetMapper;
class QDialog;
class QColor;
class QColorGroup;
class QPalette;
class QCursor;
class QPoint;
class QSize;
class QRect;
class QPointArray;
class QPainter;
class QRegion;
class QFont;
class QFontMetrics;
class QFontInfo;
class QPen;
class QBrush;
class QWMatrix;
class QPixmap;
class QBitmap;
class QMovie;
class QImage;
class QImageIO;
class QPicture;
class QPrinter;
class QAccel;
class QTimer;
class QTime;
class QClipboard;

// Widget list (defined in qwidgetlist.h)

class QWidgetList;
class QWidgetListIt;

// Window system dependent definitions

#if defined(Q_WS_MAC)
#if QT_MACOSX_VERSION < 0x1020
typedef struct OpaqueEventLoopTimerRef* EventLoopTimerRef;
typedef struct OpaqueMenuHandle *MenuRef;
typedef struct __EventLoopTimer*        EventLoopTimerRef;
typedef struct OpaqueMenuRef*        MenuRef;

#ifndef Q_WS_MACX
typedef struct CGContext *CGContextRef;
typedef struct OpaqueWindowGroupRef *WindowGroupRef;
typedef struct OpaqueGrafPtr *CGrafPtr;
typedef struct OpaquePMPrintSession *PMPrintSession;
typedef struct OpaquePMPrintSettings *PMPrintSettings;
typedef struct OpaquePMPageFormat *PMPageFormat;
typedef struct Point Point;
typedef struct OpaqueEventHandlerRef*   EventHandlerRef;
typedef struct OpaqueEventHandlerCallRef*  EventHandlerCallRef;
typedef struct OpaqueEventRef*          EventRef;
typedef long int OSStatus;
typedef struct OpaqueScrapRef *ScrapRef;
typedef struct OpaqueRgnHandle *RgnHandle;
typedef struct OpaqueWindowPtr *WindowPtr;
typedef WindowPtr WindowRef;
typedef struct OpaqueGrafPtr *GWorldPtr;
typedef GWorldPtr GrafPtr;
typedef struct GDevice **GDHandle;
typedef struct ColorTable ColorTable;
typedef struct BitMap BitMap;
typedef struct EventRecord EventRecord;
typedef void * MSG;
typedef int WId;
typedef struct AEDesc AppleEvent;

#endif // Q_WS_MAC

#if defined(Q_WS_WIN)
#include "qwindowdefs_win.h"
#endif // Q_WS_WIN

#if defined(Q_OS_TEMP)
#include "qwinfunctions_wce.h"
#endif // Q_OS_TEMP

#if defined(Q_WS_X11)

typedef struct _XDisplay Display;
typedef union  _XEvent XEvent;
typedef struct _XGC *GC;
typedef struct _XRegion *Region;
typedef unsigned long  WId;

Q_EXPORT Display *qt_xdisplay();
Q_EXPORT int	 qt_xscreen();
Q_EXPORT WId	 qt_xrootwin(); // ### REMOVE 4.0
Q_EXPORT WId	 qt_xrootwin( int scrn ); // ### 4.0 add default arg of -1
Q_EXPORT GC	 qt_xget_readonly_gc( int scrn, bool monochrome );
Q_EXPORT GC	 qt_xget_temp_gc( int scrn, bool monochrome );

Q_EXPORT const char *qAppClass();		// get application class

#endif // Q_WS_X11

#if defined(Q_WS_QWS)

typedef unsigned long  WId;
struct QWSEvent;
class QGfx;

#endif // Q_WS_QWS

class QApplication;

#if defined(NEEDS_QMAIN)
#define main qMain

// Global platform-independent types and functions

typedef Q_INT32 QCOORD;				// coordinate type
const QCOORD QCOORD_MAX =  2147483647;

typedef unsigned int QRgb;			// RGB triplet

Q_EXPORT const char *qAppName();		// get application name

// Misc functions

typedef void (*QtCleanUpFunction)();
Q_EXPORT void qAddPostRoutine( QtCleanUpFunction );
Q_EXPORT void qRemovePostRoutine( QtCleanUpFunction );

#if !defined(QT_CLEAN_NAMESPACE)
// source compatibility with Qt 2.x
typedef QtCleanUpFunction Q_CleanUpFunction;


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Qt 3.3.8