get element index

[WalterWhite]

I want to use the "API_Elem_Head" to get the "API_ElemInfo3D" with the function "ACAPI_Element_Get3DInfo()".

However, the "API_ElemInfo3D" i get has a zero value both of "fElemIdx" and "lElemIdx".

Here's my code:

GSErrCode __ACENV_CALL d5c_sync::ElementEventHandlerProc(const API_NotifyElementType * elem_type)
{
API_ElemInfo3D elem_info;
ACAPI_Element_Get3DInfo(elem_type->elemHead, &elem_info);

}

Is there some way i can get the element's index.I need it to get the element so i can read the geometry data by "ModelerAPI".

Thanks a lot!

[WalterWhite]

Besides, I found that iI can get the element's Guid,so is there some way that I can get the element by Guid?