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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the ActiveQt framework of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:BSD$

    10 ** You may use this file under the terms of the BSD license as follows:

    11 **

    12 ** "Redistribution and use in source and binary forms, with or without

    13 ** modification, are permitted provided that the following conditions are

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    37 ** $QT_END_LICENSE$

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    39 ****************************************************************************/

    40 

    41 #ifndef QAXAGGREGATED_H

    42 #define QAXAGGREGATED_H

    43 

    44 #include <QtCore/qobject.h>

    45 

    46 struct IUnknown;

    47 

    48 QT_BEGIN_HEADER

    49 

    50 QT_BEGIN_NAMESPACE

    51 

    52 QT_MODULE(ActiveQt)

    53 

    54 #ifndef QT_NO_WIN_ACTIVEQT

    55 

    56 struct QUuid;

    57 

    58 class QAxAggregated

    59 {

    60     friend class QAxServerBase;

    61     friend class QAxClientSite;

    62 public:

    63     virtual long queryInterface(const QUuid &iid, void **iface) = 0;

    64 

    65 protected:

    66     virtual ~QAxAggregated()

    67     {}

    68 

    69     inline IUnknown *controllingUnknown() const

    70     { return controlling_unknown; }

    71     inline QWidget *widget() const 

    72     {

    73         return qobject_cast<QWidget*>(the_object);

    74     }

    75     inline QObject *object() const { return the_object; }

    76 

    77 private:

    78     IUnknown *controlling_unknown;

    79     QObject *the_object;

    80 };

    81 

    82 #define QAXAGG_IUNKNOWN \

    83     HRESULT WINAPI QueryInterface(REFIID iid, LPVOID *iface) { \

    84     return controllingUnknown()->QueryInterface(iid, iface); } \

    85     ULONG WINAPI AddRef() {return controllingUnknown()->AddRef(); } \

    86     ULONG WINAPI Release() {return controllingUnknown()->Release(); } \

    87 

    88 #endif // QT_NO_WIN_ACTIVEQT

    89 

    90 QT_END_NAMESPACE

    91 

    92 QT_END_HEADER

    93 

    94 #endif // QAXAGGREGATED_H