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    <title>Qt 4.0: main.cpp Example File (activeqt/simple/main.cpp)</title>
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<td align="right" valign="top" width="230"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></td></tr></table><h1 align="center">main.cpp Example File<br /><small><small>activeqt/simple/main.cpp</small></small></h1>
<pre>&nbsp;   /****************************************************************************
    **
    ** Copyright (C) 1992-2005 Trolltech AS. All rights reserved.
    **
    ** This file is part of the documentation of the Qt 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.
**
** 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.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ****************************************************************************/

    #include &lt;qapplication.h&gt;
    #include &lt;qlayout.h&gt;
    #include &lt;qslider.h&gt;
    #include &lt;qlcdnumber.h&gt;
    #include &lt;qlineedit.h&gt;
    #include &lt;qmessagebox.h&gt;

    #include &lt;qaxbindable.h&gt;
    #include &lt;qaxfactory.h&gt;

    class QSimpleAX : public QWidget, public QAxBindable
    {
        Q_OBJECT
        Q_PROPERTY( QString text READ text WRITE setText )
        Q_PROPERTY( int value READ value WRITE setValue )
    public:
        QSimpleAX(QWidget *parent = 0)
        : QWidget(parent)
        {
            QVBoxLayout *vbox = new QVBoxLayout( this );

            slider = new QSlider( Qt::Horizontal, this );
            LCD = new QLCDNumber( 3, this );
            edit = new QLineEdit( this );

            connect( slider, SIGNAL( valueChanged( int ) ), this, SLOT( setValue(int) ) );
            connect( edit, SIGNAL(textChanged(const QString&amp;)), this, SLOT(setText(const QString&amp;)) );

            vbox-&gt;addWidget( slider );
            vbox-&gt;addWidget( LCD );
            vbox-&gt;addWidget( edit );
        }

        QString text() const
        {
            return edit-&gt;text();
        }
        int value() const
        {
            return slider-&gt;value();
        }

    signals:
        void someSignal();
        void valueChanged(int);
        void textChanged(const QString&amp;);

    public slots:
        void setText( const QString &amp;string )
        {
            if ( !requestPropertyChange( &quot;text&quot; ) )
                return;

            edit-&gt;blockSignals( TRUE );
            edit-&gt;setText( string );
            edit-&gt;blockSignals( FALSE );
            emit someSignal();
            emit textChanged( string );

            propertyChanged( &quot;text&quot; );
        }
        void about()
        {
            QMessageBox::information( this, &quot;About QSimpleAX&quot;, &quot;This is a Qt widget, and this slot has been\n&quot;
                                                              &quot;called through ActiveX/OLE automation!&quot; );
        }
        void setValue( int i )
        {
            if ( !requestPropertyChange( &quot;value&quot; ) )
                return;
            slider-&gt;blockSignals( TRUE );
            slider-&gt;setValue( i );
            slider-&gt;blockSignals( FALSE );
            LCD-&gt;display( i );
            emit valueChanged( i );

            propertyChanged( &quot;value&quot; );
        }

    private:
        QSlider *slider;
        QLCDNumber *LCD;
        QLineEdit *edit;
    };

    #include &quot;main.moc&quot;

    QAXFACTORY_DEFAULT(QSimpleAX,
               &quot;{DF16845C-92CD-4AAB-A982-EB9840E74669}&quot;,
               &quot;{616F620B-91C5-4410-A74E-6B81C76FFFE0}&quot;,
               &quot;{E1816BBA-BF5D-4A31-9855-D6BA432055FF}&quot;,
               &quot;{EC08F8FC-2754-47AB-8EFE-56A54057F34E}&quot;,
               &quot;{A095BA0C-224F-4933-A458-2DD7F6B85D8F}&quot;)</pre>
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<td width="40%" align="center"><a href="trademarks.html">Trademarks</a></td>
<td width="30%" align="right"><div align="right">Qt 4.0.0</div></td>
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