【OBD C++】扫描元素怎么区分OBD元素类型？

ScanCriteria是MS平台级的对象，不能认识OBD中的墙、梁柱等。你可以参考OBD SDK中的例子tfshowinfo，其中有如下写法用来判断一个元素描述符（MSElementDescr*）是哪种OBD中的对象的。

static StatusInt MSElementDescr_showInfo
(
MSElementDescr* pThis /* => */
)
    {
    int tfType = mdlTFElmdscr_getApplicationType (pThis);

    switch (tfType)
        {
        case TF_FREE_FORM_ELM:
        case TF_SMOOTH_FORM_ELM:
        case TF_LINEAR_FORM_ELM:
        case TF_ARC_FORM_ELM:
        case TF_LINE_STRING_FORM_ELM:
        case TF_SLAB_FORM_ELM:
        case TF_PATH_FORM_ELM:
        case TF_STRUCTURAL_ELM:
        case TF_STRUCTSMOOTH_ELM:
            {
            TFFormRecipeList* pRecipeNode = NULL;

            if (SUCCESS == mdlTFFormRecipeList_constructFromElmdscr (&pRecipeNode, pThis))
                {
                TFFormRecipe_showInfo (mdlTFFormRecipeList_getFormRecipe (pRecipeNode));

                mdlTFFormRecipeList_free (&pRecipeNode);
                }
            break;
            }

        case TF_COMPOUND_CELL_ELM:
        case TF_CC_INT_DOOR_ELM:
        case TF_CC_EXT_DOOR_ELM:
        case TF_CC_INT_WINDOW_ELM:
        case TF_CC_EXT_WINDOW_ELM:
        case TF_CC_INT_DOOR_AND_WINDOW_ELM:
        case TF_CC_EXT_DOOR_AND_WINDOW_ELM:
            {
            TFFrameList* pFrameNode = NULL;

            if (pFrameNode = mdlTFFrameList_constructFromElmdscr (pThis))
                {
                TFFrame_showInfo (mdlTFFrameList_getFrame (pFrameNode));

                mdlTFFrameList_free (&pFrameNode);
                }

            break;
            }

        case TF_EBREP_ELM:
            {
            MSElementDescr_showTriformaSolidInfo (pThis);
            break;
            }

        default:
            {
            int       type = mdlElement_getType (&pThis->el);
            ElementId id   = mdlElement_getID (&pThis->el);

            print ("type=%d Id=%I64d\n", type, id);

            break;
            }
        }

    return SUCCESS;
    }