EventMask

A bit mask that defines the specific event messages permitted to be written into the caller's event queue. The following bits are defined for the EventMask field:

Bit #

Meaning If Set
3
Enable Power Management
4
Disable Power Management
5
Restore BIOS Defaults
6
Set Power State
7
Battery Low Event
8
Normal Resume Event
9
Critical Resume Event All other bits are reserved and must be 0.
If any of the reserved bits in the EventMask field are set (value = 1), the request fails with a ReturnCode value of PowerBadReserved.