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SYSTEM_POWER_STATE enumeration (winnt.h)

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

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