Method Initialize

src/TortoiseShell/ContextMenu.cpp:52–352

static int g_syncSeq = 0;

STDMETHODIMP CShellExt::Initialize(LPCITEMIDLIST pIDFolder, LPDATAOBJECT pDataObj, HKEY /* hRegKey */)
{
	CTraceToOutputDebugString::Instance()(__FUNCTION__ ": Shell :: Initialize\n");
	PreserveChdir preserveChdir;
	files_.clear();
	folder_.clear();
	uuidSource.clear();
	uuidTarget.clear();
	itemStates = 0;
	itemStatesFolder = 0;
	std::wstring statuspath;
	git_wc_status_kind fetchedstatus = git_wc_status_none;
	// get selected files/folders
	if (pDataObj)
	{
		STGMEDIUM medium;
		FORMATETC fmte = { static_cast<CLIPFORMAT>(g_shellidlist),
			nullptr,
			DVASPECT_CONTENT,
			-1,
			TYMED_HGLOBAL};
		HRESULT hres = pDataObj->GetData(&fmte, &medium);

		if (SUCCEEDED(hres) && medium.hGlobal)
		{
			SCOPE_EXIT
			{
				ReleaseStgMedium(&medium);
				if (medium.pUnkForRelease)
				{
					IUnknown* relInterface = medium.pUnkForRelease;
					relInterface->Release();
				}
			};
			if (m_State == FileStateDropHandler)
			{
				if (!CRegStdDWORD(L"Software\\TortoiseGit\\EnableDragContextMenu", TRUE, false, HKEY_CURRENT_USER, KEY_WOW64_64KEY))
					return S_OK;

				FORMATETC etc = { CF_HDROP, nullptr, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
				STGMEDIUM stg = { TYMED_HGLOBAL };
				if ( FAILED( pDataObj->GetData ( &etc, &stg )))
					return E_INVALIDARG;
				SCOPE_EXIT { ReleaseStgMedium(&stg); };

				auto drop = static_cast<HDROP>(GlobalLock(stg.hGlobal));
				if (!drop)
					return E_INVALIDARG;
				SCOPE_EXIT { GlobalUnlock(drop); };

				const int count = DragQueryFile(drop, UINT(-1), nullptr, 0);
				if (count == 1)
					itemStates |= ITEMIS_ONLYONE;
				for (int i = 0; i < count; i++)
				{
					// find the path length in chars
					const UINT len = DragQueryFile(drop, i, nullptr, 0);
					if (len == 0 || len >= INT_MAX)