reactos/base/shell/shell32/CEnumIDListBase.h

   1 /*
   2  * This library is free software; you can redistribute it and/or
   3  * modify it under the terms of the GNU Lesser General Public
   4  * License as published by the Free Software Foundation; either
   5  * version 2.1 of the License, or (at your option) any later version.
   6  *
   7  * This library is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  10  * Lesser General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU Lesser General Public
  13  * License along with this library; if not, write to the Free Software
  14  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  15  */
  16
  17 #ifndef __ENUMIDLIST_H__
  18 #define __ENUMIDLIST_H__
  19
  20 struct ENUMLIST
  21 {
  22         ENUMLIST                                *pNext;
  23         LPITEMIDLIST                    pidl;
  24 };
  25
  26 class CEnumIDListBase :
  27         public CComObjectRootEx<CComMultiThreadModelNoCS>,
  28         public IEnumIDList
  29 {
  30 private:
  31         ENUMLIST                                *mpFirst;
  32         ENUMLIST                                *mpLast;
  33         ENUMLIST                                *mpCurrent;
  34 public:
  35         CEnumIDListBase();
  36         ~CEnumIDListBase();
  37         BOOL AddToEnumList(LPITEMIDLIST pidl);
  38         BOOL DeleteList();
  39         BOOL HasItemWithCLSID(LPITEMIDLIST pidl);
  40         BOOL CreateFolderEnumList(LPCWSTR lpszPath, DWORD dwFlags);
  41
  42         // *** IEnumIDList methods ***
  43         virtual HRESULT STDMETHODCALLTYPE Next(ULONG celt, LPITEMIDLIST *rgelt, ULONG *pceltFetched);
  44         virtual HRESULT STDMETHODCALLTYPE Skip(ULONG celt);
  45         virtual HRESULT STDMETHODCALLTYPE Reset();
  46         virtual HRESULT STDMETHODCALLTYPE Clone(IEnumIDList **ppenum);
  47
  48 BEGIN_COM_MAP(CEnumIDListBase)
  49         COM_INTERFACE_ENTRY_IID(IID_IEnumIDList, IEnumIDList)
  50 END_COM_MAP()
  51 };
  52
  53 #endif /* __ENUMIDLIST_H__ */