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windows-server-2003/admin/snapin/filemgmt/dataobj.cpp

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// DataObj.cpp : Implementation of data object classes
#include "stdafx.h"
#include "compdata.h"
#include "safetemp.h"
#include "macros.h"
USE_HANDLE_MACROS("FILEMGMT(dataobj.cpp)")
#include "FileSvc.h" // FileServiceProvider
#include "dataobj.h"
#include "smb.h"
#include "sfm.h"
#include "cmponent.h" // for COLNUM_SESSIONS_COMPUTERNAME
#define DONT_WANT_SHELLDEBUG
#include "shlobjp.h" // ILFree, ILGetSize, ILClone, etc.
#include <comstrm.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#include "stddtobj.cpp"
// IDataObject interface implementation
HRESULT CFileMgmtDataObject::GetDataHere(
FORMATETC __RPC_FAR *pFormatEtcIn,
STGMEDIUM __RPC_FAR *pMedium)
{
MFC_TRY;
const CLIPFORMAT cf=pFormatEtcIn->cfFormat;
if (cf == m_CFInternal)
{
CFileMgmtDataObject *pThis = this;
stream_ptr s(pMedium);
return s.Write(&pThis, sizeof(CFileMgmtDataObject*));
}
else if (cf == m_CFSnapInCLSID)
{
stream_ptr s(pMedium);
return s.Write(&m_SnapInCLSID, sizeof(GUID));
}
if (!m_MultiSelectObjList.empty())
{
//
// this is the multiselect data object, we don't support other clipformats in GetDataHere().
//
return DV_E_FORMATETC;
}
if (cf == m_CFNodeType)
{
const GUID* pguid = GetObjectTypeGUID( m_objecttype );
stream_ptr s(pMedium);
return s.Write(pguid, sizeof(GUID));
}
else if (cf == m_CFNodeTypeString)
{
const BSTR strGUID = GetObjectTypeString( m_objecttype );
stream_ptr s(pMedium);
return s.Write(strGUID);
}
else if (cf == m_CFDisplayName)
{
return PutDisplayName(pMedium);
}
else if (cf == m_CFDataObjectType)
{
stream_ptr s(pMedium);
return s.Write(&m_dataobjecttype, sizeof(m_dataobjecttype));
}
else if (cf == m_CFMachineName)
{
stream_ptr s(pMedium);
return s.Write(m_strMachineName);
}
else if (cf == m_CFTransport)
{
FILEMGMT_TRANSPORT transport = FILEMGMT_OTHER;
HRESULT hr = m_pcookie->GetTransport( &transport );
if ( FAILED(hr) )
return hr;
stream_ptr s(pMedium);
return s.Write(&transport, sizeof(DWORD));
}
else if (cf == m_CFShareName)
{
ASSERT( NULL != m_pcookie );
CString strShareName;
HRESULT hr = m_pcookie->GetShareName( strShareName );
if ( FAILED(hr) )
return hr;
stream_ptr s(pMedium);
return s.Write(strShareName);
}
else if (cf == m_CFSessionClientName)
{
ASSERT( NULL != m_pcookie );
CString strSessionClientName;
HRESULT hr = m_pcookie->GetSessionClientName( strSessionClientName );
if ( FAILED(hr) )
return hr;
stream_ptr s(pMedium);
return s.Write(strSessionClientName);
}
else if (cf == m_CFSessionUserName)
{
ASSERT( NULL != m_pcookie );
CString strSessionUserName;
HRESULT hr = m_pcookie->GetSessionUserName( strSessionUserName );
if ( FAILED(hr) )
return hr;
stream_ptr s(pMedium);
return s.Write(strSessionUserName);
}
else if (cf == m_CFSessionID)
{
DWORD dwSessionID = 0;
HRESULT hr = m_pcookie->GetSessionID( &dwSessionID );
if ( FAILED(hr) )
return hr;
stream_ptr s(pMedium);
return s.Write(&dwSessionID, sizeof(DWORD));
}
else if (cf == m_CFFileID)
{
DWORD dwFileID = 0;
HRESULT hr = m_pcookie->GetFileID( &dwFileID );
if ( FAILED(hr) )
return hr;
stream_ptr s(pMedium);
return s.Write(&dwFileID, sizeof(DWORD));
}
else if (cf == m_CFServiceName)
{
ASSERT( NULL != m_pcookie );
CString strServiceName;
HRESULT hr = m_pcookie->GetServiceName( strServiceName );
if ( FAILED(hr) )
return hr;
stream_ptr s(pMedium);
return s.Write(strServiceName);
}
else if (cf == m_CFServiceDisplayName)
{
ASSERT( NULL != m_pcookie );
CString strServiceDisplayName;
HRESULT hr = m_pcookie->GetServiceDisplayName( strServiceDisplayName );
if ( FAILED(hr) )
return hr;
stream_ptr s(pMedium);
return s.Write(strServiceDisplayName);
}
else if (cf == m_CFRawCookie)
{
stream_ptr s(pMedium);
return s.Write((PBYTE)&m_pcookie, sizeof(m_pcookie));
}
else if (cf == m_CFSnapinPreloads) // added JonN 01/19/00
{
stream_ptr s(pMedium);
BOOL bPreload = TRUE;
return s.Write((PBYTE)&bPreload, sizeof(BOOL));
}
return DV_E_FORMATETC;
MFC_CATCH;
}
HRESULT CFileMgmtDataObject::Initialize( CFileMgmtCookie* pcookie,
CFileMgmtComponentData& refComponentData,
DATA_OBJECT_TYPES type )
{
if (NULL == pcookie)
{
ASSERT(FALSE);
return E_UNEXPECTED;
}
m_pComponentData = &refComponentData;
((IComponentData*) m_pComponentData)->AddRef ();
m_objecttype = pcookie->QueryObjectType();
m_fAllowOverrideMachineName = refComponentData.m_fAllowOverrideMachineName;
#ifdef SNAPIN_PROTOTYPER
if (m_objecttype != FILEMGMT_PROTOTYPER_LEAF)
m_strMachineName = pcookie->QueryTargetServer();
#else
m_strMachineName = pcookie->QueryTargetServer();
#endif
m_dataobjecttype = type;
m_pcookie = pcookie;
m_pcookie->AddRefCookie();
VERIFY( SUCCEEDED(refComponentData.GetClassID(&m_SnapInCLSID)) );
return S_OK;
}
CFileMgmtDataObject::~CFileMgmtDataObject()
{
FreeMultiSelectObjList();
if (NULL != m_pcookie)
{
m_pcookie->ReleaseCookie();
}
if ( m_pComponentData )
((IComponentData*) m_pComponentData)->Release ();
}
/////////////////////////////////////////////////////////////////////
// CFileMgmtDataObject::IDataObject::GetData()
//
// Write data into the storage medium.
// The data will be retrieved by the Send Console Message snapin.
//
//
HRESULT CFileMgmtDataObject::GetData(
FORMATETC __RPC_FAR * pFormatEtcIn,
STGMEDIUM __RPC_FAR * pMedium)
{
ASSERT(pFormatEtcIn != NULL);
ASSERT(pMedium != NULL);
HRESULT hResult = S_OK;
const CLIPFORMAT cf = pFormatEtcIn->cfFormat;
if (!m_MultiSelectObjList.empty())
{
//
// This is the multiselect dataobject.
//
if (cf == m_CFObjectTypesInMultiSelect)
{
//
// We will provide the list of object types of all the currently selected items here.
// MMC will use this format to determine extensions snapins
//
UINT nMultiSelectedObjects = m_MultiSelectObjList.size();
// Calculate the size of SMMCObjectTypes.
int cb = sizeof(DWORD) + sizeof(SMMCObjectTypes) * nMultiSelectedObjects;
//Fill out parameters
pMedium->tymed = TYMED_HGLOBAL;
pMedium->hGlobal = ::GlobalAlloc(GMEM_SHARE|GMEM_MOVEABLE, cb);
if (pMedium->hGlobal == NULL)
return STG_E_MEDIUMFULL;
SMMCObjectTypes* pMMCDO = reinterpret_cast<SMMCObjectTypes*>(::GlobalLock(pMedium->hGlobal));
pMMCDO->count = 0;
GUID *pMMCDOGuid = pMMCDO->guid;
for (CDataObjectList::iterator i = m_MultiSelectObjList.begin(); i != m_MultiSelectObjList.end(); i++)
{
CCookie* pbasecookie = NULL;
hResult = ExtractData(*i, CFileMgmtDataObject::m_CFRawCookie, &pbasecookie, sizeof(pbasecookie));
if (FAILED(hResult))
break;
pbasecookie = m_pComponentData->ActiveBaseCookie( pbasecookie );
CFileMgmtCookie* pUseThisCookie = dynamic_cast<CFileMgmtCookie*>(pbasecookie);
FileMgmtObjectType objecttype = pUseThisCookie->QueryObjectType();
const GUID* pguid = GetObjectTypeGUID(objecttype);
memcpy(pMMCDOGuid++, pguid, sizeof(GUID));
pMMCDO->count++;
}
::GlobalUnlock(pMedium->hGlobal);
if (FAILED(hResult))
{
::GlobalFree(pMedium->hGlobal);
pMedium->hGlobal = NULL;
}
} else
hResult = DV_E_FORMATETC;
return hResult;
}
if (cf == m_cfSendConsoleMessageRecipients)
{
ASSERT (m_pComponentData);
if ( m_pComponentData )
{
// I suppose it doesn't matter what type this cookie is because we
// are just using to hang enumerated session cookies off of, as long
// as it's not an abstract class.
BOOL fContinue = TRUE;
HRESULT hr = S_OK;
CSmbSessionCookie* pCookie = new CSmbSessionCookie[1];
if ( pCookie )
{
CSmbCookieBlock cookieBlock (pCookie, 1, (LPCTSTR) m_strMachineName, 0);
CBaseCookieBlock* pCookieBlock = 0;
//
// JonN 6/28/01 426224
// Shared Folder: Send Message access denied error title needs to be changed for localization
//
AFX_MANAGE_STATE(AfxGetStaticModuleState()); // required for CWaitCursor
// Enumerate all the session cookies
for (INT iTransport = FILEMGMT_FIRST_TRANSPORT;
fContinue && iTransport < FILEMGMT_NUM_TRANSPORTS;
iTransport++ )
{
hr = m_pComponentData->GetFileServiceProvider(iTransport)->EnumerateSessions(
NULL, &pCookie[0], false);
fContinue = SUCCEEDED(hr);
}
// Enumerate all the computer names from the session cookies and store them in
// the computerList
CStringList computerList;
size_t len = 0; // number of WCHARS
while ( !pCookie[0].m_listResultCookieBlocks.IsEmpty () )
{
pCookieBlock = pCookie[0].m_listResultCookieBlocks.RemoveHead ();
ASSERT (pCookieBlock);
if ( !pCookieBlock )
break;
int nCookies = pCookieBlock->QueryNumCookies ();
while (nCookies--)
{
CCookie* pBaseCookie = pCookieBlock->QueryBaseCookie (nCookies);
ASSERT (pBaseCookie);
if ( pBaseCookie )
{
CFileMgmtCookie* pFMCookie = dynamic_cast <CFileMgmtCookie*> (pBaseCookie);
ASSERT (pFMCookie);
if ( pFMCookie )
{
computerList.AddHead (pFMCookie->QueryResultColumnText (
COLNUM_SESSIONS_COMPUTERNAME, *m_pComponentData));
len += computerList.GetHead ().GetLength () + 1; // to account for NULL
}
}
}
pCookieBlock->Release ();
}
if ( !m_strMachineName.IsEmpty () )
{
computerList.AddHead (m_strMachineName);
len += computerList.GetHead ().GetLength () + 1; // to account for NULL
}
// Run through all the computer names in computerList and add them to the output buffer
//
// Write the list of recipients to the storage medium.
// - The list of recipients is a group of UNICODE strings
// terminated by TWO null characters.c
// - Allocated memory must include BOTH null characters.
//
len += 1; // to account for extra NULL at end.
WCHAR* pgrszRecipients = new WCHAR[len];
WCHAR* ptr = pgrszRecipients;
CString computerName;
if ( pgrszRecipients )
{
::ZeroMemory (pgrszRecipients, len * sizeof (WCHAR));
while ( !computerList.IsEmpty () )
{
computerName = computerList.RemoveHead ();
// append computer name
wcscpy (ptr, (LPCTSTR) computerName);
// skip past computer name and terminating NULL
ptr += computerName.GetLength () + 1;
}
// Add the name of this computer
HGLOBAL hGlobal = ::GlobalAlloc (GMEM_FIXED, len * sizeof (WCHAR));
if ( hGlobal )
{
memcpy (OUT hGlobal, pgrszRecipients, len * sizeof (WCHAR));
pMedium->hGlobal = hGlobal;
}
else
hResult = E_OUTOFMEMORY;
delete [] pgrszRecipients;
}
else
hResult = E_OUTOFMEMORY;
// pCookie deleted in destructor of cookieBlock
}
else
hResult = E_OUTOFMEMORY;
}
else
hResult = E_UNEXPECTED;
}
else if (cf == m_CFIDList)
{
LPITEMIDLIST pidl = NULL, pidlR = NULL;
hResult = m_pcookie->GetSharePIDList( &pidl );
if (SUCCEEDED(hResult))
{
pidlR = ILClone(ILFindLastID(pidl)); // relative IDList
ILRemoveLastID(pidl); // folder IDList
int cidl = 1;
UINT offset = sizeof(CIDA) + sizeof(UINT)*cidl;
UINT cbFolder = ILGetSize(pidl);
UINT cbRelative = ILGetSize(pidlR);
UINT cbTotal = offset + cbFolder + cbRelative;
HGLOBAL hGlobal = ::GlobalAlloc (GPTR, cbTotal);
if ( hGlobal )
{
LPIDA pida = (LPIDA)hGlobal;
pida->cidl = cidl;
pida->aoffset[0] = offset;
MoveMemory(((LPBYTE)hGlobal+offset), pidl, cbFolder);
offset += cbFolder;
pida->aoffset[1] = offset;
MoveMemory(((LPBYTE)hGlobal+offset), pidlR, cbRelative);
pMedium->hGlobal = hGlobal;
}
else
hResult = E_OUTOFMEMORY;
// free pidl & pidlR
if (pidl)
ILFree(pidl);
if (pidlR)
ILFree(pidlR);
} else
hResult = DV_E_FORMATETC;
} else if (cf == m_CFNodeID2)
{
if (m_objecttype != FILEMGMT_ROOT &&
m_objecttype != FILEMGMT_SHARES &&
m_objecttype != FILEMGMT_SESSIONS &&
m_objecttype != FILEMGMT_RESOURCES &&
m_objecttype != FILEMGMT_SERVICES)
{
hResult = DV_E_FORMATETC;
} else
{
const BSTR strGUID = GetObjectTypeString( m_objecttype );
// JonN 12/11/01 502856
int cbString = (lstrlen(strGUID) + 1) * sizeof(TCHAR);
pMedium->tymed = TYMED_HGLOBAL;
pMedium->hGlobal = ::GlobalAlloc(GMEM_SHARE|GMEM_MOVEABLE,
sizeof(SNodeID2) + cbString);
if (!(pMedium->hGlobal))
{
hResult = E_OUTOFMEMORY;
} else
{
SNodeID2 *pNodeID = (SNodeID2 *)GlobalLock(pMedium->hGlobal);
if (!pNodeID)
{
hResult = HRESULT_FROM_WIN32(GetLastError());
GlobalFree(pMedium->hGlobal);
pMedium->hGlobal = NULL;
} else
{
pNodeID->dwFlags = 0;
pNodeID->cBytes = cbString;
CopyMemory(pNodeID->id, strGUID, cbString);
GlobalUnlock(pMedium->hGlobal);
}
}
}
} else
hResult = DV_E_FORMATETC; // Invalid/unknown clipboard format
return hResult;
} // CMyComputerDataObject::GetData()
HRESULT CFileMgmtDataObject::PutDisplayName(STGMEDIUM* pMedium)
// Writes the "friendly name" to the provided storage medium
// Returns the result of the write operation
{
if ( !IsAutonomousObjectType(m_objecttype) )
{
ASSERT(FALSE);
return DV_E_FORMATETC;
}
CString strDisplayName;
BOOL fStaticNode = ( NULL != m_pComponentData
&& !m_pComponentData->IsExtensionSnapin()
&& m_pComponentData->QueryRootCookie().QueryObjectType()
== m_objecttype);
// will only succeed for scope cookies
m_pcookie->GetDisplayName( strDisplayName, fStaticNode );
// LoadStringPrintf(nStringId, OUT &strDisplayName, (LPCTSTR)m_strMachineName);
stream_ptr s(pMedium);
return s.Write(strDisplayName);
}
void CFileMgmtDataObject::FreeMultiSelectObjList()
{
if (!m_MultiSelectObjList.empty())
{
for (CDataObjectList::iterator i = m_MultiSelectObjList.begin(); i != m_MultiSelectObjList.end(); i++)
{
CComObject<CFileMgmtDataObject>* pDataObject = reinterpret_cast<CComObject<CFileMgmtDataObject>*>(*i);
delete pDataObject;
}
m_MultiSelectObjList.clear();
}
}
HRESULT CFileMgmtDataObject::InitMultiSelectDataObjects(CFileMgmtComponentData& refComponentData)
{
FreeMultiSelectObjList();
ASSERT(!m_pComponentData);
m_pComponentData = &refComponentData;
((IComponentData*) m_pComponentData)->AddRef ();
VERIFY( SUCCEEDED(refComponentData.GetClassID(&m_SnapInCLSID)) );
return S_OK;
}
HRESULT CFileMgmtDataObject::AddMultiSelectDataObjects(CFileMgmtCookie* pCookie, DATA_OBJECT_TYPES type)
{
HRESULT hr = S_OK;
CComObject<CFileMgmtDataObject>* pDataObject = NULL;
hr = CComObject<CFileMgmtDataObject>::CreateInstance(&pDataObject);
if (SUCCEEDED(hr))
hr = pDataObject->Initialize(pCookie, *m_pComponentData, type );
IDataObject *piDataObject = NULL;
if (SUCCEEDED(hr))
hr = pDataObject->QueryInterface(IID_IDataObject, reinterpret_cast<void**>(&piDataObject));
if (SUCCEEDED(hr))
{
m_MultiSelectObjList.push_back(piDataObject);
} else
{
delete pDataObject;
}
return hr;
}
// Register the clipboard formats
CLIPFORMAT CFileMgmtDataObject::m_CFSnapinPreloads =
(CLIPFORMAT)RegisterClipboardFormat(CCF_SNAPIN_PRELOADS);
CLIPFORMAT CFileMgmtDataObject::m_CFDisplayName =
(CLIPFORMAT)RegisterClipboardFormat(CCF_DISPLAY_NAME);
CLIPFORMAT CFileMgmtDataObject::m_CFNodeID2 =
(CLIPFORMAT)RegisterClipboardFormat(CCF_NODEID2);
CLIPFORMAT CFileMgmtDataObject::m_CFTransport =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_TRANSPORT");
CLIPFORMAT CFileMgmtDataObject::m_CFMachineName =
(CLIPFORMAT)RegisterClipboardFormat(L"MMC_SNAPIN_MACHINE_NAME");
CLIPFORMAT CFileMgmtDataObject::m_CFShareName =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_SNAPIN_SHARE_NAME");
CLIPFORMAT CFileMgmtDataObject::m_CFSessionClientName =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_SNAPIN_SESSION_CLIENT_NAME");
CLIPFORMAT CFileMgmtDataObject::m_CFSessionUserName =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_SNAPIN_SESSION_USER_NAME");
CLIPFORMAT CFileMgmtDataObject::m_CFSessionID =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_SNAPIN_SESSION_ID");
CLIPFORMAT CFileMgmtDataObject::m_CFFileID =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_SNAPIN_FILE_ID");
CLIPFORMAT CFileMgmtDataObject::m_CFServiceName =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_SNAPIN_SERVICE_NAME");
CLIPFORMAT CFileMgmtDataObject::m_CFServiceDisplayName =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_SNAPIN_SERVICE_DISPLAYNAME");
CLIPFORMAT CDataObject::m_CFRawCookie =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_SNAPIN_RAW_COOKIE");
// Additional clipboard formats for the Send Console Message snapin
CLIPFORMAT CFileMgmtDataObject::m_cfSendConsoleMessageRecipients =
(CLIPFORMAT)RegisterClipboardFormat(_T("mmc.sendcmsg.MessageRecipients"));
// Additional clipboard formats for the Security Page
CLIPFORMAT CFileMgmtDataObject::m_CFIDList =
(CLIPFORMAT)RegisterClipboardFormat(CFSTR_SHELLIDLIST);
CLIPFORMAT CFileMgmtDataObject::m_CFObjectTypesInMultiSelect =
(CLIPFORMAT)RegisterClipboardFormat(CCF_OBJECT_TYPES_IN_MULTI_SELECT);
CLIPFORMAT CFileMgmtDataObject::m_CFMultiSelectDataObject =
(CLIPFORMAT)RegisterClipboardFormat(CCF_MMC_MULTISELECT_DATAOBJECT);
CLIPFORMAT CFileMgmtDataObject::m_CFMultiSelectSnapins =
(CLIPFORMAT)RegisterClipboardFormat(CCF_MULTI_SELECT_SNAPINS);
CLIPFORMAT CFileMgmtDataObject::m_CFInternal =
(CLIPFORMAT)RegisterClipboardFormat(L"FILEMGMT_SNAPIN_INTERNAL");
STDMETHODIMP CFileMgmtComponentData::QueryDataObject(MMC_COOKIE cookie, DATA_OBJECT_TYPES type, LPDATAOBJECT* ppDataObject)
{
MFC_TRY;
// WARNING cookie cast
CCookie* pbasecookie = reinterpret_cast<CCookie*>(cookie);
CFileMgmtCookie* pUseThisCookie = ActiveCookie((CFileMgmtCookie*)pbasecookie);
ASSERT( IsValidObjectType(pUseThisCookie->QueryObjectType()) );
CComObject<CFileMgmtDataObject>* pDataObject = NULL;
HRESULT hRes = CComObject<CFileMgmtDataObject>::CreateInstance(&pDataObject);
if ( FAILED(hRes) )
return hRes;
HRESULT hr = pDataObject->Initialize( pUseThisCookie, *this, type );
if ( SUCCEEDED(hr) )
{
hr = pDataObject->QueryInterface(IID_IDataObject,
reinterpret_cast<void**>(ppDataObject));
}
if ( FAILED(hr) )
{
delete pDataObject;
return hr;
}
return hr;
MFC_CATCH;
}
/////////////////////////////////////////////////////////////////////
// FileMgmtObjectTypeFromIDataObject()
//
// Find the objecttype of a IDataObject pointer. The purpose
// of this routine is to combine ExtractObjectTypeGUID() and
// CheckObjectTypeGUID() into a single function.
//
// Return the FILEMGMT_* node type (enum FileMgmtObjectType).
//
// HISTORY
// 30-Jul-97 t-danm Creation.
//
FileMgmtObjectType
FileMgmtObjectTypeFromIDataObject(IN LPDATAOBJECT lpDataObject)
{
ASSERT(lpDataObject != NULL);
GUID guidObjectType = GUID_NULL; // JonN 11/21/00 PREFIX 226042
HRESULT hr = ExtractObjectTypeGUID( IN lpDataObject, OUT &guidObjectType );
ASSERT( SUCCEEDED(hr) );
return (FileMgmtObjectType)CheckObjectTypeGUID(IN &guidObjectType );
} // FileMgmtObjectTypeFromIDataObject()
HRESULT ExtractBaseCookie(
IN LPDATAOBJECT piDataObject,
OUT CCookie** ppcookie,
OUT FileMgmtObjectType* pobjecttype )
{
HRESULT hr = ExtractData( piDataObject,
CFileMgmtDataObject::m_CFRawCookie,
(PBYTE)ppcookie,
sizeof(CCookie*) );
if ( SUCCEEDED(hr) && NULL != pobjecttype )
{
*pobjecttype = FileMgmtObjectTypeFromIDataObject(piDataObject);
}
return hr;
}
BOOL IsMultiSelectObject(LPDATAOBJECT piDataObject)
{
BOOL bMultiSelectObject = FALSE;
if (piDataObject)
{
//
// return TRUE if piDataObject is the composite data object (MMC_MS_DO) created by MMC.
//
STGMEDIUM stgmedium = {TYMED_HGLOBAL, NULL, NULL};
FORMATETC formatetc = {CFileMgmtDataObject::m_CFMultiSelectDataObject,
NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
HRESULT hr = piDataObject->GetData(&formatetc, &stgmedium);
if (S_OK == hr && stgmedium.hGlobal)
{
DWORD* pdwData = reinterpret_cast<DWORD*>(::GlobalLock(stgmedium.hGlobal));
bMultiSelectObject = (1 == *pdwData);
::GlobalUnlock(stgmedium.hGlobal);
::GlobalFree(stgmedium.hGlobal);
}
}
return bMultiSelectObject;
}