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qwhatsthis.h

这里是qwhatsthis.h包含文件的所有文本，一字不差。它仅仅用来说明，版权由Trolltech保留。

/****************************************************************************
** $Id:  qt/qwhatsthis.h   3.0.5   edited Oct 12 2001 $
**
** Definition of QWhatsThis class
**
** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
**
** This file is part of the widgets module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef QWHATSTHIS_H
#define QWHATSTHIS_H

#ifndef QT_H
#include "qobject.h"
#endif // QT_H

#ifndef QT_NO_WHATSTHIS

#include "qcursor.h"

class QToolButton;
class QPopupMenu;
class QStyleSheet;

class Q_EXPORT QWhatsThis: public Qt
{
public:
    QWhatsThis( QWidget *);
    virtual ~QWhatsThis();

    virtual QString text( const QPoint & );
    virtual bool clicked( const QString& href );

    // the common static functions
    static void add( QWidget *, const QString &);
    static void remove( QWidget * );
    static QString textFor( QWidget *, const QPoint & pos = QPoint(), bool includeParents = FALSE );

    static QToolButton * whatsThisButton( QWidget * parent );

    static void enterWhatsThisMode();
    static bool inWhatsThisMode();
    static void leaveWhatsThisMode( const QString& = QString::null, const QPoint& pos = QCursor::pos(), QWidget* w = 0 );

    static void display( const QString& text, const QPoint& pos = QCursor::pos(), QWidget* w = 0 );
};

#endif // QT_NO_WHATSTHIS

#endif // QWHATSTHIS_H