activex/supporterrorinfo.h

   1 /*****************************************************************************
   2  * supporterrorinfo.h: ActiveX control for VLC
   3  *****************************************************************************
   4  * Copyright (C) 2006 the VideoLAN team
   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 __SUPPORTERRORINFO_H__
  24 #define __SUPPORTERRORINFO_H__
  25
  26 #include <oaidl.h>
  27
  28 class VLCSupportErrorInfo : public ISupportErrorInfo
  29 {
  30
  31 public:
  32
  33     VLCSupportErrorInfo(VLCPlugin *p_instance) :
  34         _p_instance(p_instance)
  35     {};
  36     virtual ~VLCSupportErrorInfo()
  37     {};
  38
  39     // IUnknown methods
  40     STDMETHODIMP QueryInterface(REFIID riid, void **ppv)
  41     {
  42         if( NULL == ppv )
  43             return E_POINTER;
  44         if( (IID_IUnknown == riid)
  45          || (IID_ISupportErrorInfo == riid) )
  46         {
  47             AddRef();
  48             *ppv = reinterpret_cast<LPVOID>(this);
  49             return NOERROR;
  50         }
  51         return _p_instance->pUnkOuter->QueryInterface(riid, ppv);
  52     };
  53
  54     STDMETHODIMP_(ULONG) AddRef(void) { return _p_instance->pUnkOuter->AddRef(); };
  55     STDMETHODIMP_(ULONG) Release(void) { return _p_instance->pUnkOuter->Release(); };
  56
  57     // ISupportErrorInfo methods
  58     STDMETHODIMP InterfaceSupportsErrorInfo(REFIID  riid);
  59
  60     // VLCSupportErrorInfo methods
  61     void setErrorInfo(LPCOLESTR progid, REFIID riid, const char *description);
  62
  63 private:
  64     VLCPlugin *_p_instance;
  65 };
  66
  67 #endif
  68