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      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)
     68