include/wx/msw/wrapshl.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/wrapshl.h
   3 // Purpose:     wrapper class for stuff from shell32.dll
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     2004-10-19
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2004 Vadim Zeitlin <vadim@wxwindows.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_MSW_WRAPSHL_H_
  13 #define _WX_MSW_WRAPSHL_H_
  14
  15 #ifdef __WXWINCE__
  16     #include <winreg.h>
  17     #include <objbase.h>
  18     #include <shlguid.h>
  19 #endif
  20
  21 #include <shlobj.h>
  22
  23 // ----------------------------------------------------------------------------
  24 // wxItemIdList implements RAII on top of ITEMIDLIST
  25 // ----------------------------------------------------------------------------
  26
  27 class wxItemIdList
  28 {
  29 public:
  30     // ctor takes ownership of the item and will free it
  31     wxItemIdList(LPITEMIDLIST pidl)
  32     {
  33         m_pidl = pidl;
  34     }
  35
  36     static void Free(LPITEMIDLIST pidl)
  37     {
  38         if ( pidl )
  39         {
  40             LPMALLOC pMalloc;
  41             SHGetMalloc(&pMalloc);
  42             if ( pMalloc )
  43             {
  44                 pMalloc->Free(pidl);
  45                 pMalloc->Release();
  46             }
  47             else
  48             {
  49                 wxLogLastError(wxT("SHGetMalloc"));
  50             }
  51         }
  52     }
  53
  54     ~wxItemIdList()
  55     {
  56         Free(m_pidl);
  57     }
  58
  59     // implicit conversion to LPITEMIDLIST
  60     operator LPITEMIDLIST() const { return m_pidl; }
  61
  62     // get the corresponding path, returns empty string on error
  63     wxString GetPath() const
  64     {
  65         wxString path;
  66         if ( !SHGetPathFromIDList(m_pidl, wxStringBuffer(path, MAX_PATH)) )
  67         {
  68             wxLogLastError(_T("SHGetPathFromIDList"));
  69         }
  70
  71         return path;
  72     }
  73
  74 private:
  75     LPITEMIDLIST m_pidl;
  76
  77     DECLARE_NO_COPY_CLASS(wxItemIdList)
  78 };
  79
  80 #endif // _WX_MSW_WRAPSHL_H_
  81