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DropHandler.h
Package: adfview_src.zip　[view]
Upload User: hy_wanghao
Upload Date: 2007-01-08
Package Size: 279k
Code Size: 3k
Category:

Shell api

Development Platform:

Visual C++

DropHandler.h：Code Content
  1. #if !defined(AFX_DROPHANDLER_H__20010326_81A7_8573_71AC_0080AD509054__INCLUDED_)
  2. #define AFX_DROPHANDLER_H__20010326_81A7_8573_71AC_0080AD509054__INCLUDED_
  4. #pragma once
  6. #include "DropTargetImpl.h"
  9. /////////////////////////////////////////////////////////////////////////////
  10. // CDropHandler
  12. // We need a DropHandler Shell Extension to handle drops on the root
  13. // folder (or the ADF file itself) in Windows2000.
  14. //
  15. // A DropHandler Shell extension is a COM object, which supports
  16. // IDropTarget and IPersistFile. We reuse the implmentation
  17. // of the IDropTarget from the internal drag'n'drop stuff.
  18. class ATL_NO_VTABLE CDropHandler :
  19.    public CComObjectRootEx<CComSingleThreadModel>,
  20.    public CComCoClass<CDropHandler, &CLSID_DropHandler>,
  21.    public IPersistFile,
  22.    public IDropTargetImpl
  23. {
  24. public:
  26. DECLARE_PROTECT_FINAL_CONSTRUCT()
  28. BEGIN_COM_MAP(CDropHandler) 
  29.    COM_INTERFACE_ENTRY_IID(IID_IDropTarget,IDropTarget)
  30.    COM_INTERFACE_ENTRY_IID(IID_IPersistFile,IPersistFile)
  31. END_COM_MAP()
  33. // CDropHandler
  34. public:
  35.    static HRESULT WINAPI UpdateRegistry(BOOL bRegister)
  36.    {
  37.       CComBSTR bstrCLSID(CLSID_DropHandler);
  38.       CComBSTR bstrDescription;
  39.       CComBSTR bstrProject;
  40.       bstrDescription.LoadString(IDS_DESCRIPTION);
  41.       bstrProject.LoadString(IDS_PROJNAME);
  42.       _ATL_REGMAP_ENTRY rm[] = { 
  43.          { OLESTR("CLSID"), bstrCLSID },
  44.          { OLESTR("PROJECTNAME"), bstrProject },
  45.          { OLESTR("DESCRIPTION"), bstrDescription },
  46.          { NULL,NULL } };
  47.       return _Module.UpdateRegistryFromResource(IDR_DROPHANDLER, bRegister, rm);
  48.    }
  50.    HRESULT FinalConstruct()
  51.    {
  52.       HRESULT Hr;
  53.       CComObject<CFolder> *pFolder;
  54.       HR( CComObject<CFolder>::CreateInstance(&pFolder) );
  55.       // Initialize the IDropTarget code.
  56.       // The _Init() call will do AddRef() and Release() on the CFolder.
  57.       // The CFolder object will be initialized in the IPersistFile::Load() method
  58.       // called by the Shell later.
  59.       return _Init(pFolder, NULL);
  60.    }
  62.    // IPersist
  64.    STDMETHOD(GetClassID)(CLSID *pCLSID)
  65.    {
  66.       VALIDATE_POINTER(pCLSID);
  67.       *pCLSID = CLSID_DropHandler;
  68.       return S_OK;
  69.    }
  71.    // IPersistFile
  73.    STDMETHOD(IsDirty)(void)
  74.    {
  75.       ATLTRACENOTIMPL(_T("CDropHandler::IsDirty"));
  76.    }
  77.    
  78.    STDMETHOD(Load)(LPCOLESTR pwstrFileName, DWORD /*dwMode*/)
  79.    {
  80.       ATLASSERT(m_pFolder);
  81.       CPidl pidl;
  82.       pidl.Attach( ShellGetFileNamePidl(const_cast<LPOLESTR>(pwstrFileName)) );
  83.       return m_pFolder->Initialize(pidl);
  84.    }
  86.    STDMETHOD(Save)(LPCOLESTR, BOOL)
  87.    {
  88.       ATLTRACENOTIMPL(_T("CDropHandler::Save"));
  89.    }
  90.    
  91.    STDMETHOD(SaveCompleted)(LPCOLESTR)
  92.    {
  93.       ATLTRACENOTIMPL(_T("CDropHandler::SaveCompleted"));
  94.    }
  95.    
  96.    STDMETHOD(GetCurFile)(LPOLESTR *)
  97.    {
  98.       ATLTRACENOTIMPL(_T("CDropHandler::GetCurFile"));
  99.    }
  100.    
  101. };
  104. #endif // !defined(AFX_DROPHANDLER_H__20010326_81A7_8573_71AC_0080AD509054__INCLUDED_)