Various flags controlling the object. This member can include zero or a combination of the following values:
| AGGREGATABLE | Object will allow itself to be aggregated |
| DISPINTERFACE | Object will support IDispatch |
| SUPPORT_ERROR_INFO | Object will supply IErrorInfo for early bound clients. Currently not implemented. |
| SUPPLY_TYPE_INFO | Object will supply ITypeInfo through it's IDispatch. Do not include in objects that hide their interface. |