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Код: Выделить всё

struct CGlobalLock
{
	CGlobalLock(HGLOBAL hMem)
		: m_hMem(hMem)
	{
		m_pMem = ::GlobalLock(m_hMem);
	}

	~CGlobalLock()
	{
		if (m_hMem != NULL)
		{
			::GlobalUnlock(m_hMem);
		}
	}

	HGLOBAL m_hMem;
	LPVOID m_pMem;
};

struct CStgMedium : public STGMEDIUM
{
	CStgMedium()
	{
		tymed = 0;
		hGlobal = NULL;
		pUnkForRelease = NULL;
	}

	~CStgMedium()
	{
		::ReleaseStgMedium(this);
	}
};

PIDLWrapper GetSelectedItem(IShellView* pShellView, UINT uItem)
{
	HRESULT hr = S_OK;

	IDataObjectPtr spDataItem;		
	hr = pShellView->GetItemObject(uItem, IID_IDataObject, (void**)&spDataItem);
	if (FAILED(hr) || spDataItem == NULL)
	{
		return NULL;
	}

	FORMATETC fetc;
	fetc.cfFormat = CF_IDLIST;
	fetc.dwAspect = DVASPECT_CONTENT;
	fetc.ptd = NULL;
	fetc.lindex = -1;
	fetc.tymed = TYMED_HGLOBAL;

	hr = spDataItem->QueryGetData(&fetc);
	ATLASSERT(SUCCEEDED(hr));

	CStgMedium stgmed;

	hr = spDataItem->GetData(&fetc, &stgmed);
	ATLASSERT(SUCCEEDED(hr));

	CGlobalLock gl(stgmed.hGlobal);

	CIDA* pData = (CIDA*)gl.m_pMem;

	ATLASSERT(pData != NULL);
	if (pData == NULL || pData->cidl < 1)
	{
		return NULL;
	}

	UINT offset = pData->aoffset[1];
	char* pcData = reinterpret_cast<char*>(pData) + offset;
	LPITEMIDLIST pidlSource = (LPITEMIDLIST)pcData;

	return PIDLWrapper(pidlSource); // copy pidlSource
}

Код: Выделить всё

PIDLWrapper pidl = GetSelectedItem(m_spShellView, SVGIO_SELECTION);

Код: Выделить всё

CF_IDLIST = ::RegisterClipboardFormat(CFSTR_SHELLIDLIST);