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SYSTEM_POWER_INFORMATION structure

Applies to: desktop apps only

Contains information about the idleness of the system.

Syntax

Copy

typedef struct _SYSTEM_POWER_INFORMATION {
  ULONG MaxIdlenessAllowed;
  ULONG Idleness;
  ULONG TimeRemaining;
  UCHAR CoolingMode;
} SYSTEM_POWER_INFORMATION, *PSYSTEM_POWER_INFORMATION;

Members

MaxIdlenessAllowed

The idleness at which the system is considered idle and the idle time-out begins counting, expressed as a percentage. Dropping below this number causes the timer to be canceled.

Idleness

The current idle level, expressed as a percentage.

TimeRemaining

The time remaining in the idle timer, in seconds.

CoolingMode

The current system cooling mode. This member must one of the following values.

Value	Meaning
PO_TZ_ACTIVE 0	The system is currently in Active cooling mode.
PO_TZ_INVALID_MODE 2	The system does not support CPU throttling, or there is no thermal zone defined in the system.
PO_TZ_PASSIVE 1	The system is currently in Passive cooling mode.

Remarks

Note that this structure definition was accidentally omitted from WinNT.h. This error will be corrected in the future. In the meantime, to compile your application, include the structure definition contained in this topic in your source code.

Requirements

Minimum supported client	Windows XP
Minimum supported server	Windows Server 2003

SYSTEM_POWER_INFORMATION structure

Syntax

Members

Remarks

Requirements

See also