[MSCE C++]获取元素属性的问题

/*--------------------------------------------------------
| getAllInstances
+-------------------------------------------------------*/
WCharCP getCategoryName(ECPropertyP ecProp)
{
	IECInstancePtr categoryInstance = ecProp->GetCustomAttribute(WString(L"Category"));
	if (categoryInstance.IsValid())
	{
		ECValue ecVal1, ecVal2;
		categoryInstance->GetValue(ecVal1, L"Standard");
		categoryInstance->GetValue(ecVal2, L"DisplayLabel");
		WString result =ecVal1.ToString() + WString(L" | ") + ecVal2.ToString();
		return result.GetWCharCP();
	}
	else
		return L"No Category";
}
void getAllInstances(WCharCP  unparsed)
    {
	ElementHandle   eh(2013L, ACTIVEMODEL);

    DgnECManagerR ecMgr = DgnECManager::GetManager();
	FindInstancesScopePtr scope = FindInstancesScope::CreateScope(eh, FindInstancesScopeOption(DgnECHostType::Element));
    ECQueryPtr            ecQuery = ECQuery::CreateQuery (ECQUERY_PROCESS_SearchAllClasses); 
										//ECQUERY_PROCESS_SearchAllExtrinsic will only search ECXAttr
    ecQuery->SetSelectProperties(true);

    for (DgnECInstancePtr instance : ecMgr.FindInstances(*scope, *ecQuery))
        {
        DgnElementECInstanceP elemInst = instance->GetAsElementInstance();
        WPrintfString outStr(L"--------- className = %s, instanceId = %s ---------------",
                             elemInst->GetClass().GetName().GetWCharCP(),
                             elemInst->GetInstanceId().GetWCharCP());
        mdlDialog_dmsgsPrint(outStr);
        for (ECPropertyP ecProp : elemInst->GetClass().GetProperties())
            {
			WString valStr;
			ECValue ecVal;
			elemInst->GetValue(ecVal, ecProp->GetName().GetWCharCP());
			IDgnECTypeAdapterR typeAdapter = IDgnECTypeAdapter::GetForProperty(*ecProp);
			IDgnECTypeAdapterContextPtr typeContext = IDgnECTypeAdapterContext::Create(*ecProp, *elemInst, ecProp->GetName().GetWCharCP());
			typeAdapter.ConvertToString(valStr, ecVal, *typeContext);

			WPrintfString outStr2(L"\t%s[%s] = %s (categoryName=%s)",
				ecProp->GetDisplayLabel().GetWCharCP(), ecProp->GetTypeName().GetWCharCP(), valStr.GetWCharCP(), getCategoryName(ecProp));
            mdlDialog_dmsgsPrint(outStr2);
            }
        }
    }

/*--------------------------------------------------------
| getAllInstances
+-------------------------------------------------------*/
WCharCP getCategoryName(ECPropertyP ecProp)
{
	IECInstancePtr categoryInstance = ecProp->GetCustomAttribute(WString(L"Category"));
	if (categoryInstance.IsValid())
	{
		ECValue ecVal1, ecVal2;
		categoryInstance->GetValue(ecVal1, L"Standard");
		categoryInstance->GetValue(ecVal2, L"DisplayLabel");
		WString result =ecVal1.ToString() + WString(L" | ") + ecVal2.ToString();
		return result.GetWCharCP();
	}
	else
		return L"No Category";
}
void getAllInstances(WCharCP  unparsed)
    {
	ElementHandle   eh(2013L, ACTIVEMODEL);

    DgnECManagerR ecMgr = DgnECManager::GetManager();
	FindInstancesScopePtr scope = FindInstancesScope::CreateScope(eh, FindInstancesScopeOption(DgnECHostType::Element));
    ECQueryPtr            ecQuery = ECQuery::CreateQuery (ECQUERY_PROCESS_SearchAllClasses); 
										//ECQUERY_PROCESS_SearchAllExtrinsic will only search ECXAttr
    ecQuery->SetSelectProperties(true);

    for (DgnECInstancePtr instance : ecMgr.FindInstances(*scope, *ecQuery))
        {
        DgnElementECInstanceP elemInst = instance->GetAsElementInstance();
        WPrintfString outStr(L"--------- className = %s, instanceId = %s ---------------",
                             elemInst->GetClass().GetName().GetWCharCP(),
                             elemInst->GetInstanceId().GetWCharCP());
        mdlDialog_dmsgsPrint(outStr);
        for (ECPropertyP ecProp : elemInst->GetClass().GetProperties())
            {
			WString valStr;
			ECValue ecVal;
			elemInst->GetValue(ecVal, ecProp->GetName().GetWCharCP());
			IDgnECTypeAdapterR typeAdapter = IDgnECTypeAdapter::GetForProperty(*ecProp);
			IDgnECTypeAdapterContextPtr typeContext = IDgnECTypeAdapterContext::Create(*ecProp, *elemInst, ecProp->GetName().GetWCharCP());
			typeAdapter.ConvertToString(valStr, ecVal, *typeContext);

			WPrintfString outStr2(L"\t%s[%s] = %s (categoryName=%s)",
				ecProp->GetDisplayLabel().GetWCharCP(), ecProp->GetTypeName().GetWCharCP(), valStr.GetWCharCP(), getCategoryName(ecProp));
            mdlDialog_dmsgsPrint(outStr2);
            }
        }
    }

DisplayHandler* pdh = eeh.GetDisplayHandler();
RotMatrix rm;
Transform tr;
dhT.GetOrientation(eeh, rm);
dhT.GetBasisTransform(eeh, tr);

这个方法 是否可行？有什么区别吗？

不建议调用单个函数去获得元素属性，因为这么多属性你得一个个去找对应的函数。而我们提供给您的是通过EC编程一次性获得元素所有的属性的。

老师你好，我想问一下还有其他的获取属性的方法吗？因为我测试发现获取属性所耗费的时间占整个程序的一大半，所以想看看有没有更快的方法。

如果您仅想获得某个或某几个特定的属性，可以考虑调用特定的函数。如果是所有属性都要获取的话，还是需要沿用现在的这个EC的方法。

好的，谢谢