|  | Home · Overviews · Examples

# Wrapper Example (ActiveQt)

The Wrapper example demonstrates how to export existing QWidget classes as ActiveX controls, and the use of QAxFactory together with the `QAXFACTORY_EXPORT()` macro. ActiveX controls in this example are the standard button classes QPushButton, QCheckBox and QRadioButton as provided by Qt.
The following code example is written in c++.

    class ActiveQtFactory : public QAxFactory
    {
    public:
        ActiveQtFactory( const QUuid &lib, const QUuid &app )
    	: QAxFactory( lib, app )
        {}
        QStringList featureList() const
        {
    	QStringList list;
    	list << "QCheckBox";
    	list << "QRadioButton";
    	list << "QPushButton";
    	list << "QToolButton";
    	return list;
        }
        QObject *createObject(const QString &key)
        {
    	if ( key == "QCheckBox" )
    	    return new QCheckBox(0);
    	if ( key == "QRadioButton" )
    	    return new QRadioButton(0);
    	if ( key == "QPushButton" )
    	    return new QPushButton(0 );
    	if ( key == "QToolButton" ) {
    	    QToolButton *tb = new QToolButton(0);
    //	    tb->setIcon( QPixmap(fileopen) );
    	    return tb;
    	}

    	return 0;
        }
        const QMetaObject *metaObject( const QString &key ) const
        {
    	if ( key == "QCheckBox" )
    	    return &QCheckBox::staticMetaObject;
    	if ( key == "QRadioButton" )
    	    return &QRadioButton::staticMetaObject;
    	if ( key == "QPushButton" )
    	    return &QPushButton::staticMetaObject;
    	if ( key == "QToolButton" )
    	    return &QToolButton::staticMetaObject;

    	return 0;
        }
        QUuid classID( const QString &key ) const
        {
    	if ( key == "QCheckBox" )
    	    return "{6E795DE9-872D-43CF-A831-496EF9D86C68}";
    	if ( key == "QRadioButton" )
    	    return "{AFCF78C8-446C-409A-93B3-BA2959039189}";
    	if ( key == "QPushButton" )
    	    return "{2B262458-A4B6-468B-B7D4-CF5FEE0A7092}";
    	if ( key == "QToolButton" )
    	    return "{7c0ffe7a-60c3-4666-bde2-5cf2b54390a1}";

    	return QUuid();
        }
        QUuid interfaceID( const QString &key ) const
        {
    	if ( key == "QCheckBox" )
    	    return "{4FD39DD7-2DE0-43C1-A8C2-27C51A052810}";
    	if ( key == "QRadioButton" )
    	    return "{7CC8AE30-206C-48A3-A009-B0A088026C2F}";
    	if ( key == "QPushButton" )
    	    return "{06831CC9-59B6-436A-9578-6D53E5AD03D3}";
    	if ( key == "QToolButton" )
    	    return "{6726080f-d63d-4950-a366-9bf33e5cdf84}";

    	return QUuid();
        }
        QUuid eventsID( const QString &key ) const
        {
    	if ( key == "QCheckBox" )
    	    return "{FDB6FFBE-56A3-4E90-8F4D-198488418B3A}";
    	if ( key == "QRadioButton" )
    	    return "{73EE4860-684C-4A66-BF63-9B9EFFA0CBE5}";
    	if ( key == "QPushButton" )
    	    return "{3CC3F17F-EA59-4B58-BBD3-842D467131DD}";
    	if ( key == "QToolButton" )
    	    return "{f4d421fd-4ead-4fd9-8a25-440766939639}";

    	return QUuid();
        }
    };

The factory implementation returns the list of supported controls, creates controls on request and provides information about the unique IDs of the COM classes and interfaces for each control.
The following code example is written in c++.

    QAXFACTORY_EXPORT( ActiveQtFactory, "{3B756301-0075-4E40-8BE8-5A81DE2426B7}", "{AB068077-4924-406a-BBAF-42D91C8727DD}" )

The factory is exported using the QAXFACTORY_EXPORT macro.

To build the example you must first build the QAxServer library. Then run `qmake` and your make tool in `examples/activeqt/wrapper`.

The demonstration requires a web browser that supports ActiveX controls, and scripting to be enabled.

    <SCRIPT LANGUAGE="VBScript">
    Sub ToolButton_Clicked()
        RadioButton.text = InputBox( "Enter something", "Wrapper Demo" )
    End Sub

    Sub PushButton_clicked()
        MsgBox( "Thank you!" )
    End Sub

    Sub CheckBox_toggled( state )
        if state = 0 then
            CheckBox.text = "Check me!"
        else
            CheckBox.text = "Uncheck me!"
        end if
    End Sub
    </SCRIPT>
    <p />
    A QPushButton:<br />
    <object ID="PushButton" CLASSID="CLSID:2B262458-A4B6-468B-B7D4-CF5FEE0A7092"
    CODEBASE="http://www.trolltech.com/demos/wrapperax.cab">
        <PARAM NAME="text" VALUE="Click me!" />
    [Object not available! Did you forget to build and register the server?]
    </object><br />

    <p />
    A QCheckBox:<br />
    <object ID="CheckBox" CLASSID="CLSID:6E795de9-872d-43cf-a831-496ef9d86c68"
    CODEBASE="http://www.trolltech.com/demos/wrapperax.cab">
        <PARAM NAME="text" VALUE="Check me!" />
    [Object not available! Did you forget to build and register the server?]
    </object><br />

    <p />
    A QToolButton:<br />
    <object ID="ToolButton" CLASSID="CLSID:7c0ffe7a-60c3-4666-bde2-5cf2b54390a1"
    CODEBASE="http://www.trolltech.com/demos/wrapperax.cab">
    [Object not available! Did you forget to build and register the server?]
    </object><br />

    <p />
    A QRadioButton:<br />
    <object ID="RadioButton" CLASSID="CLSID:afcf78c8-446c-409a-93b3-ba2959039189"
    CODEBASE="http://www.trolltech.com/demos/wrapperax.cab">
        <PARAM NAME="text" VALUE="Tune me!" />
    [Object not available! Did you forget to build and register the server?]
    </object><br />