| Min version | 8 Pre RTM |
|---|---|
| Max version | 10 TH2 |
| x64 offset offset:bitpos | Field Name |
| 0x0000 | struct _EVENT_HEADER EventHeader |
| 0x0050 | struct _ETW_BUFFER_CONTEXT BufferContext |
| 0x0054 | uint16_t ExtendedDataCount |
| 0x0056 | uint16_t UserDataLength |
| 0x0058 | struct _EVENT_HEADER_EXTENDED_DATA_ITEM * ExtendedData |
| 0x0060 | void * UserData |
| 0x0068 | void * UserContext |