1 /*

     2  * Copyright (C) 2007 Apple Inc.  All rights reserved.

     3  *

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

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  *

     8  * 1.  Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer. 

    10  * 2.  Redistributions in binary form must reproduce the above copyright

    11  *     notice, this list of conditions and the following disclaimer in the

    12  *     documentation and/or other materials provided with the distribution. 

    13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

    14  *     its contributors may be used to endorse or promote products derived

    15  *     from this software without specific prior written permission. 

    16  *

    17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

    18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

    19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

    20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

    21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

    22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

    23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

    24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

    26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    27  */

    28 

    29 #ifndef DraggingInfo_h

    30 #define DraggingInfo_h

    31 

    32 #include <objidl.h>

    33 

    34 class DraggingInfo {

    35 public:

    36     DraggingInfo(IDataObject* object, IDropSource* source)

    37         : m_object(object)

    38         , m_source(source)

    39         , m_performedDropEffect(DROPEFFECT_NONE)

    40     {

    41         m_object->AddRef();

    42         m_source->AddRef();

    43     }

    44 

    45     ~DraggingInfo()

    46     {

    47         if (m_object)

    48             m_object->Release();

    49         m_object = 0;

    50         if (m_source)

    51             m_source->Release();

    52         m_source = 0;

    53     }

    54 

    55     IDataObject* dataObject() const { return m_object; }

    56     IDropSource* dropSource() const { return m_source; }

    57 

    58     DWORD performedDropEffect() const { return m_performedDropEffect; }

    59     void setPerformedDropEffect(DWORD effect) { m_performedDropEffect = effect; }

    60 

    61 private:

    62     IDataObject* m_object;

    63     IDropSource* m_source;

    64     DWORD m_performedDropEffect;

    65 };

    66 

    67 #endif // !defined(DraggingInfo_h)