activex/dataobject.h

   1 /*****************************************************************************
   2  * persiststorage.h: ActiveX control for VLC
   3  *****************************************************************************
   4  * Copyright (C) 2005 VideoLAN
   5  *
   6  * Authors: Damien Fouilleul <Damien.Fouilleul@laposte.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 #ifndef __DATAOBJECT_H__
  24 #define __DATAOBJECT_H__
  25
  26 #include <objidl.h>
  27 #include <vector>
  28
  29 class VLCDataObject : public IDataObject
  30 {
  31
  32 public:
  33
  34     VLCDataObject(VLCPlugin *p_instance);
  35     virtual ~VLCDataObject();
  36
  37     // IUnknown methods
  38     STDMETHODIMP QueryInterface(REFIID riid, void **ppv)
  39     {
  40         if( NULL == ppv)
  41             return E_POINTER;
  42         if( (IID_IUnknown == riid)
  43          || (IID_IDataObject == riid) ) {
  44             AddRef();
  45             *ppv = reinterpret_cast<LPVOID>(this);
  46             return NOERROR;
  47         }
  48         return _p_instance->pUnkOuter->QueryInterface(riid, ppv);
  49     };
  50
  51     STDMETHODIMP_(ULONG) AddRef(void) { return _p_instance->pUnkOuter->AddRef(); };
  52     STDMETHODIMP_(ULONG) Release(void) { return _p_instance->pUnkOuter->Release(); };
  53
  54     // IDataObject methods
  55     STDMETHODIMP DAdvise(LPFORMATETC,DWORD,LPADVISESINK,LPDWORD);
  56     STDMETHODIMP DUnadvise(DWORD);
  57     STDMETHODIMP EnumDAdvise(IEnumSTATDATA**);
  58     STDMETHODIMP EnumFormatEtc(DWORD, IEnumFORMATETC**);
  59     STDMETHODIMP GetCanonicalFormatEtc(LPFORMATETC,LPFORMATETC);
  60     STDMETHODIMP GetData(LPFORMATETC,LPSTGMEDIUM);
  61     STDMETHODIMP GetDataHere(LPFORMATETC,LPSTGMEDIUM);
  62     STDMETHODIMP QueryGetData(LPFORMATETC);
  63     STDMETHODIMP SetData(LPFORMATETC,LPSTGMEDIUM,BOOL);
  64
  65     void onClose(void);
  66 private:
  67
  68     HRESULT getMetaFileData(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium);
  69     HRESULT getEnhMetaFileData(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium);
  70
  71     VLCPlugin *_p_instance;
  72     std::vector<FORMATETC> _v_formatEtc;
  73     IDataAdviseHolder *_p_adviseHolder;
  74 };
  75
  76 #endif
  77