IfcEventTypeEnum定义可以指定的不同类型事件的范围。
IFC4新增的实体
Enumeration definition
| Constant | Description |
|---|---|
| STARTEVENT | An initiating event of a process. |
| ENDEVENT | A terminating event of a process. |
| INTERMEDIATEEVENT | An event that occurs at an intermediate stage of a process. |
| USERDEFINED | |
| NOTDEFINED |
原文：https://www.cnblogs.com/herd/p/12831773.html