| Min version | 8.1 Update 1 | 10 Pre RTM |
|---|---|---|
| Max version | 10 TH2 | |
| x86 offset offset:bitpos | Field Name | |
| 0x0000:0x00 | unsigned long Waiting | unsigned long CrossThreadReleasable |
| 0x0000 | void * LockState | |
| 0x0000:0x01 | unsigned long Busy | |
| 0x0000:0x02 | unsigned long Spare | unsigned long Reserved |
| 0x0000:0x1F | unsigned long InTree | |
| 0x0004 | void * SessionState | |
| 0x0004 | unsigned long SessionId | |