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SYSTEM_POWER_STATE enumeration (winnt.h)

  • Article

Defines values that are used to specify system power states.

Syntax

typedef enum _SYSTEM_POWER_STATE {
  PowerSystemUnspecified = 0,
  PowerSystemWorking = 1,
  PowerSystemSleeping1 = 2,
  PowerSystemSleeping2 = 3,
  PowerSystemSleeping3 = 4,
  PowerSystemHibernate = 5,
  PowerSystemShutdown = 6,
  PowerSystemMaximum = 7
} SYSTEM_POWER_STATE, *PSYSTEM_POWER_STATE;

Constants

 
PowerSystemUnspecified
Value: 0
Unspecified system power state.
PowerSystemWorking
Value: 1
Specifies system power state S0.
PowerSystemSleeping1
Value: 2
Specifies system power state S1.
PowerSystemSleeping2
Value: 3
Specifies system power state S2.
PowerSystemSleeping3
Value: 4
Specifies system power state S3.
PowerSystemHibernate
Value: 5
Specifies system power state S4 (HIBERNATE).
PowerSystemShutdown
Value: 6
Specifies system power state S5 (OFF).
PowerSystemMaximum
Value: 7
Specifies the maximum enumeration value.

Requirements

Requirement Value
Minimum supported client Windows XP [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Header winnt.h (include Windows.h)

See also

ADMINISTRATOR_POWER_POLICY

GLOBAL_MACHINE_POWER_POLICY

MACHINE_POWER_POLICY

Power Management Enumeration Types

SYSTEM_POWER_CAPABILITIES

SYSTEM_POWER_POLICY

USER_POWER_POLICY