dtrans/source/win32/dnd/idroptarget.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include "idroptarget.hxx"
  21
  22 #ifdef __MINGW32__
  23 #if defined __uuidof
  24 #undef __uuidof
  25 #endif
  26 #define __uuidof(I) IID_##I
  27 #endif
  28
  29 IDropTargetImpl::IDropTargetImpl( DropTarget& pTarget): m_nRefCount( 0),
  30                                     m_rDropTarget( pTarget)
  31 {
  32 }
  33
  34 IDropTargetImpl::~IDropTargetImpl()
  35 {
  36 }
  37
  38 //IDropTarget
  39 HRESULT STDMETHODCALLTYPE IDropTargetImpl::QueryInterface( REFIID riid, void  **ppvObject)
  40 {
  41     if( !ppvObject)
  42         return E_POINTER;
  43     *ppvObject= NULL;
  44
  45     if( riid == __uuidof( IUnknown))
  46         *ppvObject= static_cast<IUnknown*>( this);
  47     else if (  riid == __uuidof( IDropTarget))
  48         *ppvObject= static_cast<IDropTarget*>( this);
  49
  50     if(*ppvObject)
  51     {
  52         AddRef();
  53         return S_OK;
  54     }
  55     else
  56         return E_NOINTERFACE;
  57
  58 }
  59
  60 ULONG STDMETHODCALLTYPE IDropTargetImpl::AddRef()
  61 {
  62     return InterlockedIncrement( &m_nRefCount);
  63 }
  64
  65 ULONG STDMETHODCALLTYPE IDropTargetImpl::Release()
  66 {
  67     LONG count= InterlockedDecrement( &m_nRefCount);
  68     if( m_nRefCount == 0 )
  69         delete this;
  70     return count;
  71 }
  72
  73 STDMETHODIMP IDropTargetImpl::DragEnter( IDataObject __RPC_FAR *pDataObj,
  74                                     DWORD grfKeyState,
  75                                     POINTL pt,
  76                                     DWORD  *pdwEffect)
  77 {
  78     return m_rDropTarget.DragEnter( pDataObj, grfKeyState,
  79                                   pt, pdwEffect);
  80 }
  81
  82 STDMETHODIMP IDropTargetImpl::DragOver( DWORD grfKeyState,
  83                                    POINTL pt,
  84                                    DWORD  *pdwEffect)
  85 {
  86     return m_rDropTarget.DragOver( grfKeyState, pt, pdwEffect);
  87 }
  88
  89 STDMETHODIMP IDropTargetImpl::DragLeave()
  90 {
  91     return m_rDropTarget.DragLeave();
  92 }
  93
  94 STDMETHODIMP IDropTargetImpl::Drop( IDataObject  *pDataObj,
  95                    DWORD grfKeyState,
  96                    POINTL pt,
  97                    DWORD __RPC_FAR *pdwEffect)
  98 {
  99     return m_rDropTarget.Drop( pDataObj, grfKeyState,
 100                                    pt, pdwEffect);
 101 }
 102
 103 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */