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 IDropTargetImpl::IDropTargetImpl( DropTarget& pTarget): m_nRefCount( 0),
  23                                     m_rDropTarget( pTarget)
  24 {
  25 }
  26
  27 IDropTargetImpl::~IDropTargetImpl()
  28 {
  29 }
  30
  31 //IDropTarget
  32 HRESULT STDMETHODCALLTYPE IDropTargetImpl::QueryInterface( REFIID riid, void  **ppvObject)
  33 {
  34     if( !ppvObject)
  35         return E_POINTER;
  36     *ppvObject= nullptr;
  37
  38     if( riid == __uuidof( IUnknown))
  39         *ppvObject= static_cast<IUnknown*>( this);
  40     else if (  riid == __uuidof( IDropTarget))
  41         *ppvObject= static_cast<IDropTarget*>( this);
  42
  43     if(*ppvObject)
  44     {
  45         AddRef();
  46         return S_OK;
  47     }
  48     else
  49         return E_NOINTERFACE;
  50
  51 }
  52
  53 ULONG STDMETHODCALLTYPE IDropTargetImpl::AddRef()
  54 {
  55     return InterlockedIncrement( &m_nRefCount);
  56 }
  57
  58 ULONG STDMETHODCALLTYPE IDropTargetImpl::Release()
  59 {
  60     LONG count= InterlockedDecrement( &m_nRefCount);
  61     if( m_nRefCount == 0 )
  62         delete this;
  63     return count;
  64 }
  65
  66 STDMETHODIMP IDropTargetImpl::DragEnter( IDataObject __RPC_FAR *pDataObj,
  67                                     DWORD grfKeyState,
  68                                     POINTL pt,
  69                                     DWORD  *pdwEffect)
  70 {
  71     return m_rDropTarget.DragEnter( pDataObj, grfKeyState,
  72                                   pt, pdwEffect);
  73 }
  74
  75 STDMETHODIMP IDropTargetImpl::DragOver( DWORD grfKeyState,
  76                                    POINTL pt,
  77                                    DWORD  *pdwEffect)
  78 {
  79     return m_rDropTarget.DragOver( grfKeyState, pt, pdwEffect);
  80 }
  81
  82 STDMETHODIMP IDropTargetImpl::DragLeave()
  83 {
  84     return m_rDropTarget.DragLeave();
  85 }
  86
  87 STDMETHODIMP IDropTargetImpl::Drop( IDataObject  *pDataObj,
  88                    DWORD grfKeyState,
  89                    POINTL pt,
  90                    DWORD __RPC_FAR *pdwEffect)
  91 {
  92     return m_rDropTarget.Drop( pDataObj, grfKeyState,
  93                                    pt, pdwEffect);
  94 }
  95
  96 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */