用拷贝钩子实现对文件夹的监控
作者 佚名技术
来源 程序设计
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发布时间 2012-06-30
| nLocks--; delete this; } return nNewCnt; } //--------------------------------------------------------------------------- HRESULT __stdcall TCopyHook::QueryInterface(REFIID dwIID, void **ppvObject) { if(dwIID == IID_IUnknown) *ppvObject = static_cast<IUnknown*>(this); else if(dwIID == IID_IShellCopyHook) *ppvObject = static_cast<ICopyHook*>(this); else return E_NOINTERFACE; reinterpret_cast<IUnknown*>(*ppvObject)->AddRef(); return S_OK; } //--------------------------------------------------------------------------- // 这就是CopyCallback方法，拷贝钩子的所有功能由它实现。参数的具体值参看MSDN UINT __stdcall TCopyHook::CopyCallback(HWND hwnd, UINT wFunc, UINT wFlags, LPCTSTR pszSrcFile, DWORD dwSrcAttribs, LPCTSTR pszDestFile, DWORD dwDestAttribs) { char szMessage[MAX_PATH+14]; sprintf(szMessage, "对%s进行的操作，是否继续？", pszSrcFile); return MessageBox(NULL, szMessage, "确认", MB_YESNO | MB_ICONEXCLAMATION); } //--------------------------------------------------------------------------- ULONG __stdcall TClassFactory::AddRef() { if(m_refcnt==0) nLocks++; m_refcnt++; return m_refcnt; } //--------------------------------------------------------------------------- ULONG __stdcall TClassFactory::Release() { int nNewCnt = --m_refcnt; if(nNewCnt <= 0) { nLocks--; delete this; } return nNewCnt; } //--------------------------------------------------------------------------- HRESULT __stdcall TClassFactory::QueryInterface(REFIID dwIID, void **ppvObject) { if(dwIID == IID_IUnknown) *ppvObject = static_cast<IUnknown*>(this); else if(dwIID == IID_IClassFactory) *ppvObject = static_cast<IClassFactory*>(this); else return E_NOINTERFACE; reinterpret_cast<IUnknown*>(*ppvObject)->AddRef(); return S_OK; } //--------------------------------------------------------------------------- HRESULT __stdcall TClassFactory::CreateInstance(IUnknown* pUnkownOuter, REFIID riid, void** ppvObj) { if(pUnkownOuter != NULL) return CLASS_E_NOAGGREGATION; TCopyHook *pObj = new TCopyHook; pObj->AddRef(); HRESULT hr = pObj->QueryInterface(riid, ppvObj); pObj->Release(); return hr; } //--------------------------------------------------------------------------- HRESULT __stdcall TClassFactory::LockServer(BOOL fLock) { if(fLock) nLocks++; else nLocks--; return S_OK; } 2. 在BCB中New-->ActiveX-->ActiveX Library，然后添加相应代码。 以下是修改后的Project1.cpp，大家可以直接copy过去。:
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