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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the ActiveQt framework of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qaxaggregated.h"
#ifdef QT_WIDGETS_LIB
# include <QtWidgets/QWidget>
#endif
QT_BEGIN_NAMESPACE
/*!
\class QAxAggregated
\brief The QAxAggregated class is an abstract base class for implementations of
additional COM interfaces.
\inmodule QAxServer
Create a subclass of QAxAggregated and reimplement
queryInterface() to support additional COM interfaces. Use
multiple inheritance from those COM interfaces. Implement the
IUnknown interface of those COM interfaces by delegating the
calls to \c QueryInterface(), \c AddRef() and \c Release() to the
interface provided by controllingUnknown().
Use the widget() method if you need to make calls to the QWidget
implementing the ActiveX control. You must not store that pointer
in your subclass (unless you use QPointer), as the QWidget can
be destroyed by the ActiveQt framework at any time.
\sa QAxBindable, QAxFactory, {Active Qt}
*/
/*!
\fn QAxAggregated::~QAxAggregated()
The destructor is called internally by Qt.
*/
/*!
\fn long QAxAggregated::queryInterface(const QUuid &iid, void **iface)
Reimplement this pure virtual function to support additional COM
interfaces. Set the value of \a iface to point to this object to
support the interface \a iid. Note that you must cast the \c
this pointer to the appropriate superclass.
\snippet src_activeqt_control_qaxbindable.cpp 2
Return the standard COM results \c S_OK (interface is supported)
or \c E_NOINTERFACE (requested interface is not supported).
\warning
Even though you must implement the \c IUnknown interface if you
implement any COM interface you must not support the \c IUnknown
interface in your queryInterface() implementation.
*/
/*!
\fn IUnknown *QAxAggregated::controllingUnknown() const
Returns the \c IUnknown interface of the ActiveX control. Implement
the \c IUnknown interface in your QAxAggregated subclass to
delegate calls to \c QueryInterface(), \c AddRef(), and \c
Release() to the interface provided by this function.
\snippet src_activeqt_control_qaxbindable.cpp 3
Instead of declaring and implementing these three functions
manually, you can use the \c QAXAGG_IUNKNOWN macro in the class
declaration of your subclass.
*/
/*!
\fn QObject *QAxAggregated::object() const
Returns a pointer to the QObject subclass implementing the COM object.
This function might return 0.
\warning
You must not store the returned pointer, unless you use a
QPointer, since the QObject can be destroyed by ActiveQt at any
time.
*/
/*!
Returns a pointer to the QWidget subclass implementing the ActiveX control.
This function might return 0.
\warning
You must not store the returned pointer, unless you use a
QPointer, since the QWidget can be destroyed by ActiveQt at any
time.
*/
QWidget *QAxAggregated::widget() const
{
#ifdef QT_WIDGETS_LIB
return qobject_cast<QWidget*>(the_object);
#else
return 0;
#endif
}
QT_END_NAMESPACE
|
