[C++ CE]放置参数化单元时修改参数值

//ElmentHandler eh;(参数化单元)

FindInstancesScopePtr scope = FindInstancesScope::CreateScope(eh, FindInstancesScopeOption(DgnECHostType::All));
ECQueryPtr query = ECQuery::CreateQuery(ECQUERY_PROCESS_SearchAllClasses);
DgnECInstanceIterable iterable = Bentley::DgnPlatform::DgnECManager::GetManager().FindInstances(*scope, *query);
for (DgnECInstanceIterable::const_iterator it = iterable.begin(); it != iterable.end(); ++it)
{
    DgnECInstancePtr instance = *it;
    ECN::ECClassCR instanceClass = instance->GetClass();
    WString classDisplayName = instanceClass.GetDisplayLabel();

    ECPropertyIterable properties = instanceClass.GetProperties();
   for (ECPropertyIterable::const_iterator it = properties.begin(); it != properties.end(); ++it)
   {
     ECValue v;
     ECPropertyCP pProp = (*it);
     if (pProp->GetName().find(L"ParameterValuesContainer"))
        continue;

      ECValue v1;

      WCharCP propertyAccessString = pProp->GetName().c_str();
     ECObjectsStatus status = instance->GetValue(v1, propertyAccessString, 0);
     if (ECOBJECTS_STATUS_Success != status)
                 continue;

   }

}

现在我能获取ECValue v1,调试看到其如下形式:

看了下帮助文档没发现读取struct里面的值的函数,希望得到大家的帮助!

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  • 您是想在复制参数化单元时修改参数的值吗?这一块底层相当复杂,我给你一个样例供你参考:

    private static DgnModel LocateCellModel(string name)
            {
                var opts = CellLibraryOptions.Include3d | CellLibraryOptions.IncludeAllLibraries | CellLibraryOptions.IncludeParametric;
                var libs = new CellLibraryCollection(opts);
                DgnModel cellModel = null;
                foreach (var lib in libs)
                {
                    MessageCenter.Instance.ShowInfoMessage(lib.Name, lib.Name, false);
                    if (name.Equals(lib.Name))
                    {
                        StatusInt status;
                        cellModel = lib.File.LoadRootModelById(out status, lib.File.FindModelIdByName(lib.Name), true, false, true);
                        break;
                    }
                }
                return cellModel;
            }
            public static void CreateParametricCell(string pcName)
            {
                const string setName = "Standard";
                var dgnFile = Session.Instance.GetActiveDgnFile();
                var dgnModel = Session.Instance.GetActiveDgnModel();
                var pcDef = ParametricCellDefinitionElement.FindByName(pcName, dgnFile);
                if (null == pcDef)  //Not find cell def in active design file
                {
                    var cellModel = LocateCellModel(pcName);
                    if (null == cellModel)
                    {
                        MessageCenter.Instance.ShowErrorMessage("Not found cell", null, true);
                        return;
                    }
                    var hdlr = DgnComponentDefinitionHandler.GetForModel(cellModel);
                    var status = hdlr.DefinitionModelHandler.CreateCellDefinition(dgnFile);
                    if (ParameterStatus.Success == status)
                        pcDef = ParametricCellDefinitionElement.FindByName(pcName, dgnFile);
                    else
                    {
                        MessageCenter.Instance.ShowErrorMessage("Error Creating cellDef", null, true);
                        return;
                    }
                }
                //IECStructArrayValue, IECArrayValue, IECStructValue, IECPropertyValue
    
                var pc = ParametricCellElement.Create(pcDef, setName, dgnModel);
                IDgnECInstance inst = pc.Parameters as IDgnECInstance;
                IECArrayValue arr = inst.GetPropertyValue("ParameterValuesContainer") as IECArrayValue;
                IECStructValue structVal = arr[1] as IECStructValue;  // .Adhoc_Name = _LOCAL_Cabinet_W
                structVal.SetValue("Adhoc_Value", 2.0);
    
                inst.ScheduleChanges(pc);
    
                DTransform3d trans = DTransform3d.Identity;
                trans.Translation = new DVector3d(1000, 2000, 3000);  //UOR unit
                TransformInfo transInfo = new TransformInfo(trans);
                pc.ApplyTransform(transInfo);
    
                pc.AddToModel();
            }



  • 老师,您上面的  inst.ScheduleChanges(pc);  应该是刷新保存修改吧 。在c++里怎么实现啊。我下面问了郑岗老师还没回我。  我用他的方法能修改并打印出来参数值,但是并没有应用到我当前模型上。

  • 我用了好像还是改不了。

    void changeParametricCell(EditElementHandleCR eeh)
    	{
    		FindInstancesScopePtr scope = FindInstancesScope::CreateScope(eeh, FindInstancesScopeOption(DgnECHostType::All));
    		ECQueryPtr query = ECQuery::CreateQuery(ECQUERY_PROCESS_SearchAllClasses);
    		DgnECInstanceIterable iterable = Bentley::DgnPlatform::DgnECManager::GetManager().FindInstances(*scope, *query);
    		DgnECInstancePtr instance = *(++(iterable.begin()));
    		WString filename;
    
    		ECN::ECClassCR instanceClass = instance->GetClass();
    		ECPropertyIterable properties = instanceClass.GetProperties();
    		
    		for (ECPropertyIterable::const_iterator it0 = properties.begin(); it0 != properties.end(); ++it0)
    		{
    			ECValue v;
    			ECPropertyCP pProp = (*it0);
    			if (pProp->GetName().Equals(L"ParameterValuesContainer")) {
    				if (pProp->GetIsArray())
    				{
    					ArrayECPropertyCP aep = pProp->GetAsArrayProperty();
    					ECN::ECClassCP _instanceClass = aep->GetStructElementType();
    					ECPropertyIterable _properties = _instanceClass->GetProperties(false);
    
    					//获取数组个数					
    					instance->GetValue(v, pProp->GetName().data());
    					ArrayInfo ai = v.GetArrayInfo();
    					int count = ai.GetCount();
    
    					for (int index = 0; index < count; index++)
    					{
    						instance->GetValue(v, pProp->GetName().data(), index);
    						IECInstancePtr _intance = v.GetStruct();
    						for (ECPropertyIterable::const_iterator it1 = _properties.begin(); it1 != _properties.end(); ++it1)
    						{
    							if ((*it1)->GetName().Equals(L"Adhoc_Label") || (*it1)->GetName().Equals(L"Adhoc_Value") || (*it1)->GetName().Equals(L"Adhoc_Type"))
    							{
    
    								ECValue _v;
    								_intance->GetValue(_v, (*it1)->GetName().data());
    								if (wcscmp(_v.GetString(), L"网格长") == 0)
    								{
    
    									ECValue value1(L"1.23");
    									_intance->SetValue(L"Adhoc_Value", value1);
    									//	_intance->ChangeValue(L"Adhoc_Value", value1);
    									break;
    								}
    							}
    
    						}
    					}
    
    				}
    			}
    		}
    
    		filename.Sprintf(L"D:\\1.xml");
    		instance->WriteToXmlFile(filename.data(), true, true);
    		instance->WriteChanges();
    	}
    	void changeParametricCell0(EditElementHandleCR eeh)
    	{
    		FindInstancesScopePtr scope = FindInstancesScope::CreateScope(eeh, FindInstancesScopeOption(DgnECHostType::All));
    		ECQueryPtr query = ECQuery::CreateQuery(ECQUERY_PROCESS_SearchAllClasses);
    		DgnECInstanceIterable iterable = Bentley::DgnPlatform::DgnECManager::GetManager().FindInstances(*scope, *query);
    		DgnECInstancePtr instance = *(++(iterable.begin()));
    
    		WString filename;
    
    		ECN::ECClassCR instanceClass = instance->GetClass();
    		ECPropertyIterable properties = instanceClass.GetProperties();
    
    		
    
    		filename.Sprintf(L"D:\\2.xml");
    		instance->WriteToXmlFile(filename.data(), true, true);
    
    	}
    	
    	
    	
    	ParametricCellHandler& pcHandler = ParametricCellHandler::GetInstance();
    		EditElementHandle eeh;
    		if (ParameterStatus::Success != pcHandler.CreateCellElement(eeh, *pcInfo))
    			return;
    		
    		changeParametricCell(eeh);
    		changeParametricCell0(eeh);
    		eeh.AddToModel();
    	
    	
    	
    我先修改了其中的 网格长 的值为1.23,保存写入1.xml   然后再读参数化单元不修改参数写入2.xml,网格长还是原来的4

  • 我用instance->ScheduleWriteChanges(eeh);可以保存在模型上了,但是好像参数类型不对,我写进去的Adhoc_Value的类型是字符串,但是它实际的类型是double类型的,我写进去好像只是单纯的显示文本变了,里面的double值没变,模型的参数值虽然是1m,但是实际还是4m。而且修改后的那个参数我在CE上直接手动修改并没有应用到模型上,好像失效了。

  • 你先用Mstn自带的参数化单元试试(C:\ProgramData\Bentley\MicroStation CONNECT Edition\Configuration\WorkSpaces\Example\WorkSets\MetroStation\DGN\Parametric Models\Double Door Cabinet.dgn),修改参数成功了再用你自己的 参数化单元。

  • 好了 谢谢老师,我刚刚换了个参数化单元好了,是我参数化单元的问题

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