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ExtractIcon.h
Package: adfview_src.zip　[view]
Upload User: hy_wanghao
Upload Date: 2007-01-08
Package Size: 279k
Code Size: 2k
Category:

Shell api

Development Platform:

Visual C++

ExtractIcon.h：Code Content
  1. #if !defined(AFX_EXTRACTICON_H__20001226_57EC_56A4_0219_0080AD509054__INCLUDED_)
  2. #define AFX_EXTRACTICON_H__20001226_57EC_56A4_0219_0080AD509054__INCLUDED_
  4. #pragma once
  7. //////////////////////////////////////////////////////////////////////////////
  8. // CExtractIcon
  10. template< class T >
  11. class ATL_NO_VTABLE CExtractIcon : 
  12.    public CComObjectRootEx<CComSingleThreadModel>,
  13.    public IExtractIcon
  14. {
  15. public:
  17. DECLARE_NOT_AGGREGATABLE(CExtractIcon)
  19. BEGIN_COM_MAP(CExtractIcon)
  20.    COM_INTERFACE_ENTRY_IID(IID_IExtractIcon,IExtractIcon)
  21. END_COM_MAP()
  23.    CPidl m_pPidl;
  25.    HRESULT _Init(LPCITEMIDLIST pidl)
  26.    {
  27.       m_pPidl.Copy(CPidl::_GetLastItem(pidl));
  28.       return S_OK;
  29.    }
  31.    // IExtractIcon
  33.    STDMETHOD(GetIconLocation)(UINT uFlags, 
  34.                               LPTSTR /*szIconFile*/, 
  35.                               UINT /*cchMax*/, 
  36.                               LPINT piIndex, 
  37.                               LPUINT puFlags)
  38.    {
  39.       ATLASSERT(piIndex);
  40.       ATLASSERT(puFlags);
  41.       if( m_pPidl.IsEmpty() ) return E_FAIL;
  42.       T *pData = reinterpret_cast<T *>((LPITEMIDLIST)m_pPidl);
  43.       if( pData!=NULL ) {
  44.          switch( pData->type ) {
  45.          case PT_FOLDER:
  46.             *piIndex = (uFlags & GIL_OPENICON)==0 ? ICON_INDEX_FOLDER : ICON_INDEX_FOLDER_OPEN;
  47.             *puFlags = GIL_NOTFILENAME;
  48.             break;
  49.          default:
  50.             *piIndex = ICON_INDEX_FILE;
  51.             *puFlags = GIL_NOTFILENAME;
  52.             break;
  53.          }
  54.       }
  55.       return S_OK;
  56.    }
  58.    STDMETHOD(Extract)(LPCTSTR /*pstrName*/, 
  59.                       UINT nIconIndex, 
  60.                       HICON *phiconLarge, 
  61.                       HICON *phiconSmall, 
  62.                       UINT /*nIconSize*/)
  63.    {
  64.       ATLASSERT(phiconLarge);
  65.       ATLASSERT(phiconSmall);
  66.       *phiconLarge = ImageList_GetIcon(_Module.m_ImageLists.m_hImageListLarge, nIconIndex, ILD_TRANSPARENT);
  67.       *phiconSmall = ImageList_GetIcon(_Module.m_ImageLists.m_hImageListSmall, nIconIndex, ILD_TRANSPARENT);
  68.       return S_OK;
  69.    };
  71. };
  73. #endif // !defined(AFX_EXTRACTICON_H__20001226_57EC_56A4_0219_0080AD509054__INCLUDED_)