HRESULT CreatePointCmd::GetCurrentPartInformation(CATIGSMFactory_var &ospGSMFactory)
//写一个获取当前部件信息的方法，函数输出了ospGSMFactory
{
HRESULT rc = E_FAIL;//声明一个RC

//用这个方法得到当前编辑器
//定义个pEditor来判断是否获得当前编译对象
//类：CATFrmEditor 方法：GetCurrentEditor

CATFrmEditor * pEditor = CATFrmEditor::GetCurrentEditor();
if (pEditor == NULL)
{
return E_FAIL;
}
//当pEditor获得到了编译器，定义一个pDoc来判断获得当前对象文档
//类：CATDocument 方法：GetDocument 接口：CATIContainerOfDocument

CATDocument *pDoc = pEditor ->GetDocument();
if (pDoc == NULL)
{
return E_FAIL;
}

CATIContainerOfDocument_var spConODocs = pDoc;
if (spConODocs == NULL_var)
{
return E_FAIL;
}
//获取特征容器
//类：CATIContainer 方法：GetSpecContainer

CATIContainer * pSpecContainer = NULL;
rc = spConODocs ->GetSpecContainer(pSpecContainer);
if (pSpecContainer == NULL || FAILED(rc))
{
return E_FAIL;
}
//获取曲面工厂
//类：
rc = pSpecContainer->QueryInterface(IID_CATIGSMFactory,(void**)&ospGSMFactory);
if (ospGSMFactory == NULL_var)
{
return E_FAIL;
}

return rc;
}

//更简便的写法

CATFrmEditor* pEditor = CATFrmEditor::GetCurrentEditor();

CATDocument *pDoc = pEditor->GetDocument();

CATIContainerOfDocument_var spConODocs = pDoc;

CATIContainer * _pContainer = NULL;

HRESULT rc = spConODocs ->GetSpecContainer(_pContainer);

CATIGSMFactory_var spGSMFactory = NULL_var;

spGSMFactory = _pContainer;